Drive Recorder Playback with Bird's-Eye View for Close Vehicle Detection
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Solution Overview
Problem
It is difficult to determine the degree of road rage and verify dangerous driving by another vehicle when a normal drive recorder captures video of an incident involving a vehicle, especially in cases of close proximity during road rage or collisions.
Innovation Solution
A recording and reproducing control device that acquires video data from a vehicle's cameras, detects close proximity of another vehicle, performs point-of-view conversion to create a bird's-eye view, and records and reproduces the video to display the relative positional relationship between vehicles, allowing for easier assessment of road rage incidents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If normal drive recorder video is reproduced, then the video data can be recorded and played back, but it is difficult to determine the degree of road rage and verify dangerous driving by another vehicle
Solution Approach 1:
The patent applies point-of-view conversion to transform the video data from the original camera perspective to a bird's-eye-view perspective. This dimensional change in visualization allows users to see the spatial relationship between vehicles more clearly, enabling accurate determination of road rage degree and verification of dangerous driving by another vehicle approaching from rear or side directions.
2Measurement precision
If video data from multiple angles is captured, then the determination of road rage becomes easier, but the device complexity increases
Solution Approach 1:
Instead of adding multiple physical cameras to capture all angles, the patent uses point-of-view conversion processing to generate a bird's-eye-view from existing video data. This virtual perspective synthesis achieves comprehensive spatial awareness without the hardware complexity of multiple cameras, maintaining determination accuracy while avoiding increased device complexity.
3Measurement precision
If a bird's-eye-view is generated through point-of-view conversion, then the relative positional relationship between vehicles becomes clear, but the processing time and computational resources increase
Solution Approach 1:
The patent performs point-of-view conversion processing on video data that has already been captured and stored. By processing recorded data rather than real-time data, the system avoids adding processing time delays during critical events. The conversion is applied to existing video files, allowing accurate distance measurement without real-time processing constraints.
Data Source
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AI summary
To make it possible to check closeness of another vehicle to an own vehicle appropriately. A recording and reproducing control device 100 includes a video data acquisition unit 120 that acquires video data of a video imaged by an imager 210 that captures at least one of a front view and a rear view of an own vehicle; an event detector 129 that detects that another vehicle gets close in a distance smaller than a predetermined distance to the own vehicle in a state in which the vehicle is traveling at a predetermined speed or higher; a point-of-view conversion processor 130 that performs a point-of-view conversion process in which a virtual point of view is set on an upper side of the vehicle on the video data; a recording controller 123 that records the video data; a reproduction controller 131 that, when reproducing the video data of a period during which the event detector 129 detects that the another vehicle gets close in a distance smaller than the predetermined distance to the vehicle in the recorded video data, reproduces the video data obtained by converting the point of view of the video data by the point-of-view conversion processor 130; and a display controller 132 that causes a display 240 to display the video data reproduced by the reproduction controller 131.