Drive Recorder Moving Object Detection Selective Recording
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Solution Overview
Problem
Existing drive recorders require additional sensors to selectively record images, which complicates their configuration and increases memory usage with multiple cameras.
Innovation Solution
A drive recorder with a moving object detecting unit and a temporary recording control unit that selects and records images from specific cameras based on detected moving objects, using only the cameras without the need for separate sensors, allowing for selective image recording.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple cameras are used to capture images around the vehicle, then the coverage area is improved, but the storage capacity consumption increases and recording time decreases
Solution Approach 1:
The patent divides the monitoring area into multiple regions corresponding to each camera's field of view. The storage medium is segmented into multiple storage areas, each associated with a specific camera. Only the storage areas corresponding to cameras that detected moving objects are activated for recording, thereby reducing overall storage consumption while maintaining comprehensive coverage capability.
Solution Approach 2:
The system dynamically adjusts which cameras are active for recording based on real-time detection of moving objects. When a moving object is detected in a specific region, only the corresponding camera is activated for recording. This dynamic activation strategy adapts the storage usage to actual recording needs, reducing wasted storage capacity on static scenes.
2Area of stationary object
If multiple cameras are used to capture images around the vehicle, then the coverage area is improved, but the recording time decreases
Solution Approach 1:
The patent segments the recording function by camera, with each camera having its own dedicated storage area. This segmentation allows the system to activate only the necessary camera-storage pairs based on moving object detection, thereby extending the effective recording time across multiple cameras while maintaining comprehensive coverage.
Solution Approach 2:
The system employs periodic monitoring of moving objects in each camera's field of view and activates recording only when moving objects are detected. This periodic check and conditional activation extends the overall recording time by avoiding continuous recording of static scenes across all cameras.
3Measurement precision
If separate sensors are used to select images for recording, then the selective recording accuracy is improved, but the device complexity increases
Solution Approach 1:
The patent makes the cameras multi-functional by enabling them to perform both image capture and moving object detection. The image processing unit analyzes images from all cameras to detect moving objects, and based on this detection, selectively activates recording for the corresponding cameras. This eliminates the need for separate sensors while maintaining selective recording accuracy.
Solution Approach 2:
The patent merges the functions of image capture and moving object detection into a single camera system. The image processing unit combines image data from multiple cameras to detect moving objects, and this combined detection information is used to control recording activation. This merging simplifies the device structure by eliminating separate sensor systems while preserving the ability to selectively record based on moving object presence.
Data Source
AI summary
A drive recorder is provided with a moving object detecting unit and a temporary recording control unit. A moving object detecting unit detects a moving object in a captured image acquired by an image acquiring unit mounted on the own vehicle and provided with a plurality of cameras capturing images around the own vehicle. A temporary recording control unit selects, as a temporary recording camera, one or more cameras which are included in the plurality of cameras in the image acquiring unit and which include a target camera which is a camera including the position of the moving object within an image capturing range of the camera, according to a detection result from the moving object detecting unit, and to record an image captured by the temporary recording camera in a previously prepared recording medium.