Common Intelligence

Principles

The following describes the implementation of common intelligence on the LDU.

Cameras perform intelligent analysis using its own algorithm, and report alarms and snapshots to the HWT-IVS1800. The HWT-IVS1800 stores and manages alarms and displays alarms on the client. Figure 4-75 shows the process.

Figure 4-75 Implementation using a camera

Configuration Process

Common intelligence can be configured on the LDU or in the camera web system.

This section describes only the configuration process on the LDU. For details about the configuration in the camera web system, see the product documentation of the corresponding camera.

Figure 4-76 Configuration process

Scenario Description

Table 4-66 describes the requirements for implementing common intelligence of cameras.

Application Limitations

• For details about the data retention period and clearance rules, see Data Clearance Rules.
• To configure intelligent analysis for cameras on the iClient S100, the camera version must be 9.0.0 or later.

Prerequisites

• Cameras have been configured to synchronize time with the HWT-IVS1800. This function is enabled by default. For details, see Configuring Time Synchronization from a Camera to the HWT-IVS1800.

Procedure

1. Log in to the LDU as the admin user. ( Logging In to the LDU)
2. Disable the behavior analysis function.
   1. Click in the upper left corner.
   2. Choose Intelligent Application > Camera Intelligence > Behavior Analysis > Global Configuration.
   3. Select a camera and toggle off Enable Global Behavior Analysis Configuration.

Related Feature Operations

Common intelligence includes the following features:

• Motion Detection
• Lens Blocking Detection
• Scene Change Detection
• Defocus Detection
• Video Quality Detection
• Audio Diagnosis

Definition

An alarm is generated when an object moves within the specified detection area of the camera.

Customer Benefits

The system performs automatic detection and will generate an alarm to notify the security personnel of exceptions. In this case, the security personnel do not need to keep eyes on video images, improving detection efficiency and reducing labor costs.

Application Scenario

This feature is used to detect objects moving within the specified detection area of the camera, for example, in an exhibition hall.

Requirements

Application Limitations

You are advised not to use this function in a single-color environment with frequent light or scene changes.

Scenario Description

Table 4-67 describes the support for this feature in different client scenarios.

Prerequisites

• You have set the parameters listed in Public Configurations.
• You have configured alarm linkage on the iClient S100. For details, see Configuring Alarm Linkage.

Procedure (on the LDU)

To view the configuration guide video, you can click in the upper left corner on the Configuration tab page, and scan the QR code.

1. Log in to the LDU as the admin user. ( Logging In to the LDU)
2. Click in the upper left corner.
3. Choose Intelligent Application > Camera Intelligence > Common Intelligence > Motion Detection.
4. Configure a motion detection area, as shown in Figure 4-77.
   Figure 4-77 Configuring a motion detection area
   

   Table 4-68 describes the key parameters and buttons.

   Table 4-68 Parameter/Button description

   Type	Parameter	Description
   Detection switch		Button for enabling or disabling the detection function.
   Detection area drawing	Add	Button for adding a detection area. A maximum of four detection areas are supported.
   	Delete	Button for deleting customized detection areas one by one.
   	Delete All	Button for deleting all detection areas.
   Configuration	Sensitivity	Detection sensitivity. The value ranges from 1 to 5. A larger value indicates higher sensitivity.
   	Alarm Interval (s)	Interval at which the system checks for motions. If motions are detected, an alarm is reported. If an object is always moving, only one alarm is reported at each interval.
   Sound And Light Alarm	Audio switch/Twinkle switch	Indicates whether to produce audible alarms (playing audio files) or visual alarms (blinking light) when an alarm is triggered.
   	Audio Output	Audio file to be played when an alarm is triggered. You can directly use this function when an intelligent IR/white-light camera with intercom is used. To use this function when a camera other than the intelligent IR/white-light camera with intercom is used, you need to set audio parameters for the camera and connect the camera to an external audio output device.
   	Frequency	Number of times for playing an audio file when an alarm is triggered.
   	Twinkle Freq	Frequency at which the light blinks when an alarm is triggered. You can set this parameter to Low frequency, Medium frequency, or High frequency as required. Currently, the visual alarm (blinking light) function is available only for intelligent IR/white-light cameras with intercom. You need to set light-related parameters.
   	Twinkle Time(s)	Period in which the light blinks when an alarm is triggered.

   

   The minimum length of a selected area is 50 pixels by default, and the total length is 480 pixels. If the distance from the start position of a selected area to the right border of the video image is less than the minimum length, the area cannot be selected.

5. Configure an alert plan, as shown in Figure 4-78.
   Figure 4-78 Configuring an alert plan
   

   Table 4-69 describes the key parameters and buttons.

   Table 4-69 Parameter/Button description

   Parameter/Button	Description
   Add	Button for adding an alert plan. A maximum of eight alert plans are supported.
   Delete All	Button for deleting all alert plans.
   	Button for enabling or disabling an alert plan. If you toggle on Status, the alert plan takes effect.
   Day	Date on which an alert plan is executed. The default value is Every Day.
   Mode	Mode in which an alert plan is executed. Weekly One-off

6. Configure an alarm linkage policy, as shown in Figure 4-79.
   Figure 4-79 Configuring an alarm linkage policy
   

   Table 4-70 describes the key parameters and buttons.

   Table 4-70 Parameter/Button description

   Type	Parameter	Description
   Common Linkage	Display ID	Indicates whether to display the status icon of the camera that triggers an alarm on the live video viewing page. This function is used to notify users of an alarm generated by the current camera.
   	Full-Screen Alarm	Indicates whether to display alarms in full screen mode. After this function is enabled, if a camera triggers an alarm and the live video viewing page is displayed on the LDU, the live video of the camera is played in full screen mode for 5s. CAUTION: If other alarms are generated when the live video is played in full-screen mode, the full-screen alarm function is not triggered.
   	Send Email	Indicates whether to send email notifications. After this function is enabled, the system sends an email to the configured email recipient when a service alarm is generated. You can click to customize the alarm email recipient and email body. The email address for sending service alarms needs to be customized on the OMU portal. For details about how to set the email address for sending service alarms, see How Do I Configure Connection to the SMTP Server?.
   Recording	Channel	Camera to be linked to record video when an alarm is triggered.
   	Duration(s)	Customized recording duration. The value ranges from 5 to 3600, in seconds. You are advised to set this parameter to a value greater than or equal to 60 (default).
   Triggered Snapshot	Channel	Camera to be linked to take snapshots when an alarm is triggered. NOTE: If both snapshot taking and email sending are configured for alarm linkage, you can obtain both the alarm-triggered snapshots and the snapshots sent in the email.
   Stop Recording	Channel	Camera to be linked to stop video recording when an alarm is triggered.
   I/O Alarm	Channel ID	Alarm reporting channel.
   	Duration(s)	Customized alarm linkage duration. The value ranges from 1 to 3600, in seconds. NOTE: If the specified alarm linkage duration is different from the I/O alarm output duration configured in How Do I Connect Cables and Configure Alarm Input and Output Ports?, the shorter alarm duration is used. For example, if the I/O alarm output duration is set to 20s and the alarm linkage duration is set to 30s, the actual alarm output duration is 20s.
   Invoke Preset Position	Channel	Camera to be linked. When a service alarm is generated, the linked camera rotates to the specified preset position. Before enabling preset position linkage, ensure that a preset position has been configured for the camera to be linked. For details about how to configure a preset position, see Feature Configuration.
   	Device	Name of the camera that is linked to a preset position.
   	Position	Preset position linked to the camera.

Procedure (on the iClient S100)

1. On the iClient S100 home page, choose Maintenance Management > Smart Configuration.
2. Click a camera connected to a device and choose Ordinary Intelligence > MotionDetection.
3. Toggle on Enable Motion Detection, draw a detection area, and set related parameters.
   1. Set parameters in the Parameter Settings area. Table 4-71 describes the parameters.
      Table 4-71 Parameter description

      Parameter	Description
      Alarm Detection Interval(s)	Interval at which the camera checks for object motion. If motion is detected, the camera reports an alarm. If an object is always moving, only one alarm is reported at each interval.
      Sensitivity	Motion detection sensitivity. A larger value indicates higher sensitivity. If this parameter is set to a larger value, more slight motions can be detected.

   2. Set audible and visual alarm parameters. Table 4-72 describes the parameters.
      Table 4-72 Audible and visual alarm parameters

      Parameter	Description	Requirement on the Camera
      Enable audio alarms	Indicates whether to produce audible alarms (play audio files) when an alarm is triggered.	You can directly use this function when an intelligent IR/white-light camera with intercom is used. To use this function when a camera other than the intelligent IR/white-light camera with intercom is used, you need to set audio parameters for the camera and connect the camera to an external audio output device.
      Audio file	Audio file to be played when an alarm is triggered. To import an audio file to the iClient S100, choose Maintenance Management > Video Device > Device List on the home page, double-click the required camera that is connected to a device, and add an audio file on the Audio Channel tab page.
      Playback times	Number of times for playing an audio file when an alarm is triggered.
      Enable light flashing alarm	Indicates whether to produce visual alarms (blinking lights) when an alarm is triggered.	Currently, these functions are available when an intelligent IR/white-light camera with intercom is used. You need to set light-related parameters.
      White light illuminator	Frequency at which the light blinks when an alarm is triggered. You can set this parameter to Low, Middle, High, or Steady on as required.
      Flash duration (s)	Period in which the light blinks when an alarm is triggered.

   3. Set area parameters, as shown in Figure 4-80. Table 4-73 describes the parameters.
      Figure 4-80 Area settings
      
      Table 4-73 Area settings

      Parameter	Description
      + Area	Button for adding a detection area. A maximum of four detection areas can be configured for analyzing a type of behavior. A maximum of 10 detection areas can be configured for analyzing all types of behavior. You can select and drag the detection area or change its shape and size.
      Delete	Button for deleting a selected detection area.

   4. Set plan parameters. Table 4-74 describes the parameters.
      

      When the iClient S100 and a device are in different time zones, the time set in the Plan Settings area refers to the device time.

      Table 4-74 Plan settings

      Parameter	Description
      Add	Button for adding an alert plan. A maximum of eight alert plans are supported.
      Day	Date on which an alert plan is to be executed. Every day Monday to Sunday
      Mode	Indicates whether to cyclically execute an alert plan. Weekly One-off

4. Click Save.

Viewing Alarms (on the LDU)

1. Log in to the LDU as the admin user. ( Logging In to the LDU)
2. View alarms on the LDU.
   • Viewing real-time alarms
     1. Right-click on the desktop and choose Live > Alarm List.
     2. Click and select the type of alarms to be viewed, as shown in Figure 4-81.
        Figure 4-81 Selecting the alarm type
        
     3. Click an alarm card in the alarm list to view the alarm in full screen mode, as shown in Figure 4-82.
        Figure 4-82 Viewing an alarm in full screen mode
        
        

        • By default, the alarm-triggered video is 10s long (5s before and 5s after the alarm time).
        • If you click , the alarm list on the left stops refreshing the latest alarms. If you click again, the system refreshes all new alarms generated after the alarm refresh stops.
   • View historical alarms.
     1. Right-click on the desktop and choose Retrieval.
     2. Choose Event Retrieval.
     3. View alarms, as shown in Figure 4-83.

        You can click the Browsing Status icon to switch the alarm browsing mode. Alarms in the alarm center can be browsed in card or list mode.

        Figure 4-83 Viewing alarms
        

Viewing Alarms (on the iClient S100)

For details about how to view the latest or historical alarms, see Viewing Alarms (on the iClient S100).

Definition

After lens blocking detection is configured, an alarm will be generated promptly when the lens is blocked.

Customer Benefits

This feature improves the camera O&M efficiency, reduces manual check costs, and ensures the video quality.

Application Scenario

This feature is applicable to scenarios that have high requirements on video quality. It is mainly used in outdoor scenarios where the camera lens may be blocked by surroundings.

Requirements

Application Limitations

You are advised not to use this function in a single-color environment with frequent light or scene changes.

Scenario Description

Table 4-75 describes the support for this feature in different client scenarios.

Procedure (on the LDU)

To view the configuration guide video, you can click in the upper left corner on the Configuration tab page, and scan the QR code.

1. Log in to the LDU as the admin user. ( Logging In to the LDU)
2. Click in the upper left corner.
3. Choose Intelligent Application > Camera Intelligence > Common Intelligence > Lens Blocking.
4. Configure the lens blocking detection area, as shown in Figure 4-84.
   Figure 4-84 Configuring lens blocking detection
   

   Table 4-76 describes the parameters.

   Table 4-76 Parameter description

   Type	Parameter	Description
   -		Button for enabling or disabling the detection function.
   Configuration	Sensitivity	Detection sensitivity. There are five sensitivity levels ranging from 1 (the lowest level) to 5 (the highest level). With higher sensitivity, the camera can generate alarms when the lens is blocked by an object with a smaller size and brighter luminance.
   	Alarm Interval (s)	Interval at which the system checks for new lens blocking alarms.
   Sound And Light Alarm	Audio switch/Twinkle switch	Indicates whether to produce audible alarms (playing audio files) or visual alarms (blinking light) when an alarm is triggered.
   	Audio Output	Audio file to be played when an alarm is triggered. You can directly use this function when an intelligent IR/white-light camera with intercom is used. To use this function when a camera other than the intelligent IR/white-light camera with intercom is used, you need to set audio parameters for the camera and connect the camera to an external audio output device.
   	Frequency	Number of times for playing an audio file when an alarm is triggered.
   	Twinkle Freq	Frequency at which the light blinks when an alarm is triggered. You can set this parameter to Low frequency, Medium frequency, or High frequency as required. Currently, the visual alarm (blinking light) function is available only for intelligent IR/white-light cameras with intercom. You need to set light-related parameters.
   	Twinkle Time(s)	Period in which the light blinks when an alarm is triggered.

5. Configure an alert plan, as shown in Figure 4-85.
   Figure 4-85 Configuring an alert plan
   

   Table 4-77 describes the key parameters and buttons.

   Table 4-77 Parameter/Button description

   Parameter/Button	Description
   Add	Button for adding an alert plan. A maximum of eight alert plans are supported.
   Delete All	Button for deleting all alert plans.
   	Button for enabling or disabling an alert plan. If you toggle on Status, the alert plan takes effect.
   Day	Date on which an alert plan is executed. The default value is Every Day.
   Mode	Mode in which an alert plan is executed. Weekly One-off

6. Configure an alarm linkage policy, as shown in Figure 4-86.
   Figure 4-86 Configuring an alarm linkage policy
   

   Table 4-78 describes the key parameters and buttons.

   Table 4-78 Parameter/Button description

   Type	Parameter	Description
   Common Linkage	Display ID	Indicates whether to display the status icon of the camera that triggers an alarm on the live video viewing page. This function is used to notify users of an alarm generated by the current camera.
   	Full-Screen Alarm	Indicates whether to display alarms in full screen mode. After this function is enabled, if a camera triggers an alarm and the live video viewing page is displayed on the LDU, the live video of the camera is played in full screen mode for 5s. CAUTION: If other alarms are generated when the live video is played in full-screen mode, the full-screen alarm function is not triggered.
   	Send Email	Indicates whether to send email notifications. After this function is enabled, the system sends an email to the configured email recipient when a service alarm is generated. You can click to customize the alarm email recipient and email body. The email address for sending service alarms needs to be customized on the OMU portal. For details about how to set the email address for sending service alarms, see How Do I Configure Connection to the SMTP Server?.
   Recording	Channel	Camera to be linked to record video when an alarm is triggered.
   	Duration(s)	Customized recording duration. The value ranges from 5 to 3600, in seconds. You are advised to set this parameter to a value greater than or equal to 60 (default).
   Triggered Snapshot	Channel	Camera to be linked to take snapshots when an alarm is triggered. NOTE: If both snapshot taking and email sending are configured for alarm linkage, you can obtain both the alarm-triggered snapshots and the snapshots sent in the email.
   Stop Recording	Channel	Camera to be linked to stop video recording when an alarm is triggered.
   I/O Alarm	Channel ID	Alarm reporting channel.
   	Duration(s)	Customized alarm linkage duration. The value ranges from 1 to 3600, in seconds. NOTE: If the specified alarm linkage duration is different from the I/O alarm output duration configured in How Do I Connect Cables and Configure Alarm Input and Output Ports?, the shorter alarm duration is used. For example, if the I/O alarm output duration is set to 20s and the alarm linkage duration is set to 30s, the actual alarm output duration is 20s.
   Invoke Preset Position	Channel	Camera to be linked. When a service alarm is generated, the linked camera rotates to the specified preset position. Before enabling preset position linkage, ensure that a preset position has been configured for the camera to be linked. For details about how to configure a preset position, see Feature Configuration.
   	Device	Name of the camera that is linked to a preset position.
   	Position	Preset position linked to the camera.

Procedure (on the iClient S100)

1. On the iClient S100 home page, choose Maintenance Management > Smart Configuration.
2. Click a camera connected to a device and choose Ordinary Intelligence > VideoOcclusion.
3. Toggle on Enable Video Occlusion and set related parameters.
   1. Set parameters in the Parameter Settings area. Table 4-79 describes the parameters.
      Table 4-79 Parameter description

      Parameter	Description
      Alarm Detection Interval(s)	Interval at which the camera checks for video occlusion. If video occlusion is detected, the camera reports an alarm. If an object is always occluded, only one alarm is reported at each interval.
      Sensitivity	Motion detection sensitivity. A larger value indicates higher sensitivity. With higher sensitivity, the camera can generate alarms when the lens is blocked by an object with a smaller size and brighter luminance.

   2. Set audible and visual alarm parameters. Table 4-80 describes the parameters.
      Table 4-80 Audible and visual alarm parameters

      Parameter	Description	Requirement on the Camera
      Enable audio alarms	Indicates whether to produce audible alarms (play audio files) when an alarm is triggered.	You can directly use this function when an intelligent IR/white-light camera with intercom is used. To use this function when a camera other than the intelligent IR/white-light camera with intercom is used, you need to set audio parameters for the camera and connect the camera to an external audio output device.
      Audio file	Audio file to be played when an alarm is triggered. To import an audio file to the iClient S100, choose Maintenance Management > Video Device > Device List on the home page, double-click the required camera that is connected to a device, and add an audio file on the Audio Channel tab page.
      Playback times	Number of times for playing an audio file when an alarm is triggered.
      Enable light flashing alarm	Indicates whether to produce visual alarms (blinking lights) when an alarm is triggered.	Currently, these functions are available when an intelligent IR/white-light camera with intercom is used. You need to set light-related parameters.
      White light illuminator	Frequency at which the light blinks when an alarm is triggered. You can set this parameter to Low, Middle, High, or Steady on as required.
      Flash duration (s)	Period in which the light blinks when an alarm is triggered.

   3. Set plan parameters. Table 4-81 describes the parameters.
      

      When the iClient S100 and a device are in different time zones, the time set in the Plan Settings area refers to the device time.

      Table 4-81 Plan settings

      Parameter	Description
      Add	Button for adding an alert plan. A maximum of eight alert plans are supported.
      Day	Date on which an alert plan is to be executed. Every day Monday to Sunday
      Mode	Indicates whether to cyclically execute an alert plan. Weekly One-off

4. Click Save.

Viewing Alarms (on the LDU)

1. Log in to the LDU as the admin user. ( Logging In to the LDU)
2. View alarms on the LDU.
   • Viewing real-time alarms
     1. Right-click on the desktop and choose Live > Alarm List.
     2. Click and select the type of alarms to be viewed, as shown in Figure 4-87.
        Figure 4-87 Selecting the alarm type
        
     3. Click an alarm card in the alarm list to view the alarm in full screen mode, as shown in Figure 4-88.
        Figure 4-88 Viewing an alarm in full screen mode
        
        

        • By default, the alarm-triggered video is 10s long (5s before and 5s after the alarm time).
        • If you click , the alarm list on the left stops refreshing the latest alarms. If you click again, the system refreshes all new alarms generated after the alarm refresh stops.
   • View historical alarms.
     1. Right-click on the desktop and choose Retrieval.
     2. Choose Event Retrieval.
     3. View alarms, as shown in Figure 4-89.

        You can click the Browsing Status icon to switch the alarm browsing mode. Alarms in the alarm center can be browsed in card or list mode.

        Figure 4-89 Viewing alarms
        

Viewing Alarms (on the iClient S100)

For details about how to view the latest or historical alarms, see Viewing Alarms (on the iClient S100).

Definition

After scene change detection is configured, an alarm will be generated in a timely manner when the observation scene changes due to manual movement of the camera or other reasons.

Customer Benefits

This feature improves the camera O&M efficiency, reduces manual check costs, and ensures the video quality.

Application Scenario

This feature is applicable to scenarios that have high requirements on video quality. It is mainly used in outdoor scenarios where the camera may move or rotate due to natural surroundings and fail to focus on the detected target.

Requirements

Application Limitations

• You are advised not to use this function in a single-color environment with frequent light or scene changes.
• This feature is supported only for cameras connected through the HWSDK protocol.

Scenario Description

Table 4-82 describes the support for this feature in different client scenarios.

Prerequisites

You have set the parameters listed in Public Configurations.

Procedure

To view the configuration guide video, you can click in the upper left corner on the Configuration tab page, and scan the QR code.

1. Log in to the LDU as the admin user. ( Logging In to the LDU)
2. Click in the upper left corner.
3. Choose Intelligent Application > Camera Intelligence > Common Intelligence > Scene Change Detection.
4. Configure scene change detection, as shown in Figure 4-90.
   Figure 4-90 Configuring scene change detection
   

   Table 4-83 describes the key parameters.

   Table 4-83 Parameter description

   Parameter	Description
   	Button for enabling or disabling the detection function.
   Sensitivity	Detection sensitivity. The value is an integer ranging from 1 to 100. A larger value indicates a higher probability to trigger alarms. NOTE: In outdoor bus stations or crossroads, traffic is heavy and the scene changes greatly. To prevent false alarms from being reported, it is recommended that the sensitivity be set to a value less than 20. For indoor scenarios that are relatively stable, it is recommended that the sensitivity be set to 50.
   Alarm Interval(s)	Interval at which the system checks for new scene change alarms.

5. Configure an alert plan, as shown in Figure 4-91.
   Figure 4-91 Configuring an alert plan
   

   Table 4-84 describes the key parameters and buttons.

   Table 4-84 Parameter/Button description

   Parameter/Button	Description
   Add	Button for adding an alert plan. A maximum of eight alert plans are supported.
   Delete All	Button for deleting all alert plans.
   	Button for enabling or disabling an alert plan. If you toggle on Status, the alert plan takes effect.
   Day	Date on which an alert plan is executed. The default value is Every Day.
   Mode	Mode in which an alert plan is executed. Weekly One-off

6. Configure an alarm linkage policy, as shown in Figure 4-92.
   Figure 4-92 Configuring an alarm linkage policy
   

   Table 4-85 describes the key parameters and buttons.

   Table 4-85 Parameter/Button description

   Type	Parameter	Description
   Common Linkage	Display ID	Indicates whether to display the status icon of the camera that triggers an alarm on the live video viewing page. This function is used to notify users of an alarm generated by the current camera.
   	Full-Screen Alarm	Indicates whether to display alarms in full screen mode. After this function is enabled, if a camera triggers an alarm and the live video viewing page is displayed on the LDU, the live video of the camera is played in full screen mode for 5s. CAUTION: If other alarms are generated when the live video is played in full-screen mode, the full-screen alarm function is not triggered.
   	Send Email	Indicates whether to send email notifications. After this function is enabled, the system sends an email to the configured email recipient when a service alarm is generated. You can click to customize the alarm email recipient and email body. The email address for sending service alarms needs to be customized on the OMU portal. For details about how to set the email address for sending service alarms, see How Do I Configure Connection to the SMTP Server?.
   Recording	Channel	Camera to be linked to record video when an alarm is triggered.
   	Duration(s)	Customized recording duration. The value ranges from 5 to 3600, in seconds. You are advised to set this parameter to a value greater than or equal to 60 (default).
   Triggered Snapshot	Channel	Camera to be linked to take snapshots when an alarm is triggered. NOTE: If both snapshot taking and email sending are configured for alarm linkage, you can obtain both the alarm-triggered snapshots and the snapshots sent in the email.
   Stop Recording	Channel	Camera to be linked to stop video recording when an alarm is triggered.
   I/O Alarm	Channel ID	Alarm reporting channel.
   	Duration(s)	Customized alarm linkage duration. The value ranges from 1 to 3600, in seconds. NOTE: If the specified alarm linkage duration is different from the I/O alarm output duration configured in How Do I Connect Cables and Configure Alarm Input and Output Ports?, the shorter alarm duration is used. For example, if the I/O alarm output duration is set to 20s and the alarm linkage duration is set to 30s, the actual alarm output duration is 20s.
   Invoke Preset Position	Channel	Camera to be linked. When a service alarm is generated, the linked camera rotates to the specified preset position. Before enabling preset position linkage, ensure that a preset position has been configured for the camera to be linked. For details about how to configure a preset position, see Feature Configuration.
   	Device	Name of the camera that is linked to a preset position.
   	Position	Preset position linked to the camera.

Procedure

1. Log in to the LDU as the admin user. ( Logging In to the LDU)
2. View alarms.
   • Viewing real-time alarms
     1. Right-click on the desktop and choose Live > Alarm List.
     2. Click and select the type of alarms to be viewed, as shown in Figure 4-93.
        Figure 4-93 Selecting the alarm type
        
     3. Click an alarm card in the alarm list to view the alarm in full screen mode, as shown in Figure 4-94.
        Figure 4-94 Viewing an alarm in full screen mode
        
        

        • By default, the alarm-triggered video is 10s long (5s before and 5s after the alarm time).
        • If you click , the alarm list on the left stops refreshing the latest alarms. If you click again, the system refreshes all new alarms generated after the alarm refresh stops.
   • Viewing historical alarms
     1. Right-click on the desktop and choose Retrieval.
     2. Choose Event Retrieval.
     3. View alarms, as shown in Figure 4-95.

        You can click the Browsing Status icon to switch the alarm browsing mode. Alarms in the alarm center can be browsed in card or list mode.

        Figure 4-95 Viewing alarms
        

Definition

If the focal length of a camera is inappropriate, the images may be unclear. Users can configure defocus detection to generate alarms promptly when the camera is out of focus.

Customer Benefits

This feature improves the camera O&M efficiency, reduces manual check costs, and ensures the video quality.

Application Scenario

This feature is applicable to scenarios that have high requirements on video quality. It is mainly used in outdoor scenarios where the camera may move or rotate due to natural surroundings and fail to focus on the detected target.

Requirements

Application Limitations

• You are advised not to use this function in a single-color environment with frequent light or scene changes.
• This feature is supported only for cameras connected through the HWSDK protocol.

Scenario Description

Table 4-86 describes the support for this feature in different client scenarios.

Prerequisites

You have set the parameters listed in Public Configurations.

Procedure

To view the configuration guide video, you can click in the upper left corner on the Configuration tab page, and scan the QR code.

1. Log in to the LDU as the admin user. ( Logging In to the LDU)
2. Click in the upper left corner.
3. Choose Intelligent Application > Camera Intelligence > Common Intelligence > Defocus Detection.
4. Configure the defocus detection alarm, as shown in Figure 4-96.
   Figure 4-96 Configuring the defocus detection alarm
   

   Table 4-87 describes the key parameters and buttons.

   Table 4-87 Parameter/Button description

   Type	Parameter/Button	Description
   Detection switch		Button for enabling or disabling the detection function.
   Alarm Settings	Sensitivity	Detection sensitivity. The value ranges from 1 to 100. A larger value indicates higher sensitivity.
   	Alarm Interval(s)	Interval at which alarms are checked, in seconds.

5. Configure an alert plan, as shown in Figure 4-97.
   Figure 4-97 Configuring an alert plan
   

   Table 4-88 describes the key parameters and buttons.

   Table 4-88 Parameter/Button description

   Parameter/Button	Description
   Add	Button for adding an alert plan. A maximum of eight alert plans are supported.
   Delete All	Button for deleting all alert plans.
   	Button for enabling or disabling an alert plan. If you toggle on Status, the alert plan takes effect.
   Day	Date on which an alert plan is executed. The default value is Every Day.
   Mode	Mode in which an alert plan is executed. Weekly One-off

6. Configure an alarm linkage policy, as shown in Figure 4-98.
   Figure 4-98 Configuring an alarm linkage policy
   

   Table 4-89 describes the key parameters and buttons.

   Table 4-89 Parameter/Button description

   Type	Parameter	Description
   Common Linkage	Display ID	Indicates whether to display the status icon of the camera that triggers an alarm on the live video viewing page. This function is used to notify users of an alarm generated by the current camera.
   	Full-Screen Alarm	Indicates whether to display alarms in full screen mode. After this function is enabled, if a camera triggers an alarm and the live video viewing page is displayed on the LDU, the live video of the camera is played in full screen mode for 5s. CAUTION: If other alarms are generated when the live video is played in full-screen mode, the full-screen alarm function is not triggered.
   	Send Email	Indicates whether to send email notifications. After this function is enabled, the system sends an email to the configured email recipient when a service alarm is generated. You can click to customize the alarm email recipient and email body. The email address for sending service alarms needs to be customized on the OMU portal. For details about how to set the email address for sending service alarms, see How Do I Configure Connection to the SMTP Server?.
   Recording	Channel	Camera to be linked to record video when an alarm is triggered.
   	Duration(s)	Customized recording duration. The value ranges from 5 to 3600, in seconds. You are advised to set this parameter to a value greater than or equal to 60 (default).
   Triggered Snapshot	Channel	Camera to be linked to take snapshots when an alarm is triggered. NOTE: If both snapshot taking and email sending are configured for alarm linkage, you can obtain both the alarm-triggered snapshots and the snapshots sent in the email.
   Stop Recording	Channel	Camera to be linked to stop video recording when an alarm is triggered.
   I/O Alarm	Channel ID	Alarm reporting channel.
   	Duration(s)	Customized alarm linkage duration. The value ranges from 1 to 3600, in seconds. NOTE: If the specified alarm linkage duration is different from the I/O alarm output duration configured in How Do I Connect Cables and Configure Alarm Input and Output Ports?, the shorter alarm duration is used. For example, if the I/O alarm output duration is set to 20s and the alarm linkage duration is set to 30s, the actual alarm output duration is 20s.
   Invoke Preset Position	Channel	Camera to be linked. When a service alarm is generated, the linked camera rotates to the specified preset position. Before enabling preset position linkage, ensure that a preset position has been configured for the camera to be linked. For details about how to configure a preset position, see Feature Configuration.
   	Device	Name of the camera that is linked to a preset position.
   	Position	Preset position linked to the camera.

Procedure

1. Log in to the LDU as the admin user. ( Logging In to the LDU)
2. View alarms.
   • Viewing real-time alarms
     1. Right-click on the desktop and choose Live > Alarm List.
     2. Click and select the type of alarms to be viewed, as shown in Figure 4-99.
        Figure 4-99 Selecting the alarm type
        
     3. Click an alarm card in the alarm list to view the alarm in full screen mode, as shown in Figure 4-100.
        Figure 4-100 Viewing an alarm in full screen mode
        
        

        • By default, the alarm-triggered video is 10s long (5s before and 5s after the alarm time).
        • If you click , the alarm list on the left stops refreshing the latest alarms. If you click again, the system refreshes all new alarms generated after the alarm refresh stops.
   • Viewing historical alarms
     1. Right-click on the desktop and choose Retrieval.
     2. Choose Event Retrieval.
     3. View alarms, as shown in Figure 4-101.

        You can click the Browsing Status icon to switch the alarm browsing mode. Alarms in the alarm center can be browsed in card or list mode.

        Figure 4-101 Viewing alarms
        

Definition

With the video quality diagnosis function, cameras can automatically detect problems such as image freezing, color cast, and static noise in the video, identifying faulty cameras.

The following table describes the video quality problems that can be detected with this function.

Customer Benefits

This feature improves camera O&M efficiency and ensures video quality.

Application Scenario

This feature is applicable to scenarios that have high requirements on video quality. It is mainly used in outdoor scenarios where video quality problems may occur due to natural surroundings.

Requirements

Application Limitations

• You are advised not to use this function in a single-color environment with frequent light or scene changes.
• This feature is supported only for cameras connected through the HWSDK protocol.

Scenario Description

Table 4-90 describes the support for this feature in different client scenarios.

Procedure

To view the configuration guide video, you can click in the upper left corner on the Configuration tab page, and scan the QR code.

1. Log in to the LDU as the admin user. ( Logging In to the LDU)
2. Click in the upper left corner to access the main menu.
3. Choose Intelligent Application > Camera Intelligence > Common Intelligence > Video Quality Diagnosis.
4. Configure video quality diagnosis alarms, as shown in Figure 4-102.
   Figure 4-102 Configuring video quality diagnosis
   

   Table 4-91 describes the key parameters.

   Table 4-91 Parameter description

   Parameter	Application Scenario
   Image Freezing	Check whether the live video image remains static for a long time.
   Gain Imbalance	Check whether the live video image is too bright or too dark. You are advised not to use this function when intense light or dim light exists in the live video view.
   Color Cast	Check whether a color cast occurs on the live video image. You are advised to enable this function if you want to ensure high-quality live video images. You are advised not to enable this function in low-illumination or bright-color live video.
   Static Noise	Check whether noise interference exists on the live video image. You are advised not to use this function when intense light or dim light exists in the live video view.
   Stripe Noise	Check whether stripe interference occurs on the live video image. You are advised not to use this function in environments (for example, equipment room and zebra crossing) with stripes.
   Image Shaking	Check whether video image shaking occurs. You are advised not to use this function in scenes with a large flow of people or vehicles.

5. Configure an alert plan, as shown in Figure 4-103.
   

   For details, see 4.

   Figure 4-103 Configuring an alert plan
   

   Table 4-92 describes the key parameters and buttons.

   Table 4-92 Parameter/Button description

   Parameter/Button	Description
   Add	Button for adding an alert plan. A maximum of eight alert plans are supported.
   Delete All	Button for deleting all alert plans.
   	Button for enabling or disabling an alert plan. If you toggle on Status, the alert plan takes effect.
   Day	Date on which an alert plan is executed. The default value is Every Day.
   Mode	Mode in which an alert plan is executed. Weekly One-off

6. Configure an alarm linkage policy, as shown in Figure 4-104.
   

   For details, see 4.

   Figure 4-104 Configuring an alarm linkage policy
   

   Table 4-93 describes the key parameters and buttons.

   Table 4-93 Parameter/Button description

   Type	Parameter	Description
   Common Linkage	Display ID	Indicates whether to display the status icon of the camera that triggers an alarm on the live video viewing page. This function is used to notify users of an alarm generated by the current camera.
   	Full-Screen Alarm	Indicates whether to display alarms in full screen mode. After this function is enabled, if a camera triggers an alarm and the live video viewing page is displayed on the LDU, the live video of the camera is played in full screen mode for 5s. CAUTION: If other alarms are generated when the live video is played in full-screen mode, the full-screen alarm function is not triggered.
   	Send Email	Indicates whether to send email notifications. After this function is enabled, the system sends an email to the configured email recipient when a service alarm is generated. You can click to customize the alarm email recipient and email body. The email address for sending service alarms needs to be customized on the OMU portal. For details about how to set the email address for sending service alarms, see How Do I Configure Connection to the SMTP Server?.
   Recording	Channel	Camera to be linked to record video when an alarm is triggered.
   	Duration(s)	Customized recording duration. The value ranges from 5 to 3600, in seconds. You are advised to set this parameter to a value greater than or equal to 60 (default).
   Triggered Snapshot	Channel	Camera to be linked to take snapshots when an alarm is triggered. NOTE: If both snapshot taking and email sending are configured for alarm linkage, you can obtain both the alarm-triggered snapshots and the snapshots sent in the email.
   Stop Recording	Channel	Camera to be linked to stop video recording when an alarm is triggered.
   I/O Alarm	Channel ID	Alarm reporting channel.
   	Duration(s)	Customized alarm linkage duration. The value ranges from 1 to 3600, in seconds. NOTE: If the specified alarm linkage duration is different from the I/O alarm output duration configured in How Do I Connect Cables and Configure Alarm Input and Output Ports?, the shorter alarm duration is used. For example, if the I/O alarm output duration is set to 20s and the alarm linkage duration is set to 30s, the actual alarm output duration is 20s.
   Invoke Preset Position	Channel	Camera to be linked. When a service alarm is generated, the linked camera rotates to the specified preset position. Before enabling preset position linkage, ensure that a preset position has been configured for the camera to be linked. For details about how to configure a preset position, see Feature Configuration.
   	Device	Name of the camera that is linked to a preset position.
   	Position	Preset position linked to the camera.

Procedure

1. Log in to the LDU as the admin user. ( Logging In to the LDU)
2. View alarms.
   • Viewing real-time alarms
     1. Right-click on the desktop and choose Live > Alarm List.
     2. Click and select the type of alarms to be viewed, as shown in Figure 4-105.
        Figure 4-105 Selecting the alarm type
        
     3. Click an alarm card in the alarm list to view the alarm in full screen mode, as shown in Figure 4-106.
        Figure 4-106 Viewing an alarm in full screen mode
        
        

        • By default, the alarm-triggered video is 10s long (5s before and 5s after the alarm time).
        • If you click , the alarm list on the left stops refreshing the latest alarms. If you click again, the system refreshes all new alarms generated after the alarm refresh stops.
   • Viewing historical alarms
     1. Right-click on the desktop and choose Retrieval.
     2. Choose Event Retrieval.
     3. View alarms, as shown in Figure 4-107.

        You can click the Browsing Status icon to switch the alarm browsing mode. Alarms in the alarm center can be browsed in card or list mode.

        Figure 4-107 Viewing alarms