Feature Description
Geo-fencing analysis uses specified area boundaries in video as virtual fences, triggering corresponding alerts or notifications when targets enter or exit these areas. This technology is widely applied in traffic monitoring, security, and public safety fields, such as detecting illegal vehicle entry into bicycle lanes/bus lanes, and regulating shared bicycle parking.
After video registration with geospatial coordinates, geo-fencing vector data can be overlaid with video streams. Through object detection tracking, the system analyzes whether target trajectories intersect with geo-fencing boundaries to determine violations. In traffic scenarios, when setting vehicles as monitoring targets, the system can immediately display warnings and capture violation evidence upon illegal entry into restricted areas, enhancing monitoring efficiency and accuracy.
Feature Entry
- Video Analysis Tab -> Transport Analysis Group -> Geo-fencing Analysis Button.
- Video Analysis Tab -> Transport Analysis Group -> Geo-fencing Analysis Drop-down Button -> Geo-fencing Analysis.
Steps
- Click Video Analysis Tab -> Transport Analysis Group -> Geo-fencing Analysis Drop-down Button -> Fence Display Style Button to configure violation label text styles (font type and size) in the pop-up dialog.
- Directly click Geo-fencing Analysis Button or select the first option from the drop-down menu to open the configuration dialog. Parameters include:
- Detection Area: Specify fencing regions where target presence indicates violations. Requires selecting area dataset and its datasource.
- Analysis Rule:
- Analysis Rule: Select from predefined rules: Occupy bus lane, Occupy non-motorized vehicle lane, Occupy emergency lane.
- Analyze Region: Configure corresponding polygon features via SQL Expression dialog. E.g., differentiate bus lanes/emergency lanes/bicycle lanes through attribute filtering.
- Analysis Standard: Set violation criteria as "Contain" or "Not Contain" relationships between targets and analysis regions.
- Violation Photo Storage: Enable to save violation evidence (*.png):
- Result Folder: Specify storage path.
- Save Interval: Set time interval (seconds) for saving photos when target tracking fails. 0 indicates frame-by-frame saving. Recommended to set reasonable intervals for performance optimization.
- Intersection Area Ratio: The ratio between vehicle detection frame's overlapping area with fencing region and its total area. Values above threshold indicate region inclusion.
- After configuration, click play video. Violation labels will display above targets, with photos saved to specified path. Example: When "Occupy bus lane" rule is set, entering vehicles show "Occupy bus lane" warning.
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