Vehicle Rear-View Image Processing With Dynamic Display Range
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Solution Overview
Problem
Existing image processing systems for vehicles do not adequately address the need to switch display modes during normal driving to prevent vehicles from entering blind spots, such as during overtaking, merging, or encountering emergency vehicles, potentially leading to safety hazards.
Innovation Solution
An image processing device with a processor that acquires video from a rear-facing camera, detects predetermined targets, and adjusts the display range on an in-vehicle display unit to include the target, expanding or contracting the displayed area based on detected vehicle actions like turn signals, merging, or emergency vehicle sounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the display shows a narrow field of view to provide detailed information, then the driver can see details of objects in the blind spot, but the overall coverage area is reduced and vehicles may enter blind spots
Solution Approach 1:
The display system dynamically adjusts the field of view based on detected vehicle actions. When normal driving is detected, a wide field of view is displayed to maximize coverage. When overtaking, merging, or emergency vehicle actions are detected, the system switches to a narrow field of view to provide detailed information about specific areas of interest, thereby resolving the contradiction between coverage area and detection precision.
2Area of stationary object
If the display switches to wide field of view to increase coverage, then vehicles in blind spots can be detected, but detailed information about specific vehicles is lost
Solution Approach 1:
The system dynamically switches between wide and narrow field of view based on real-time detection of vehicle actions. When no specific actions are detected, wide field of view provides comprehensive coverage. When overtaking, merging, or emergency vehicle actions are detected, the system switches to narrow field of view to preserve detailed vehicle information, thus preventing information loss while maintaining coverage when needed.
3Ease of operation
If the display maintains a fixed field of view, then the system is simple to operate, but it cannot adapt to different driving situations and may miss important vehicles
Solution Approach 1:
The display system automatically adjusts its field of view based on detected vehicle actions without requiring manual intervention. The detection unit monitors for overtaking, merging, or emergency vehicle actions, and the display control unit automatically switches between wide and narrow field of view accordingly. This self-adjusting mechanism maintains operational simplicity while significantly improving detection reliability in various driving situations.
4Device complexity
If the system only switches display mode at departure manipulation, then the control logic is simple, but vehicles entering blind spots during normal driving cannot be detected
Solution Approach 1:
The detection unit continuously monitors the video feed for vehicle actions such as overtaking, merging, or emergency vehicle movements, rather than only checking at departure manipulation. This continuous detection enables the display to switch to narrow field of view at any time when needed, improving blind spot detection reliability while maintaining relatively simple control logic through automatic triggering based on detected actions.
Data Source
AI summary
To implement an image processing device capable of improving rear visibility of a mobile object, the image processing device includes: an acquisition unit configured to acquire a video from an imaging device that generates images of a rear of a mobile object; a display control unit configured to cause a display unit to display a first range in the video acquired by the acquisition unit; and a detection unit configured to detect a predetermined target based on the video acquired by the acquisition unit. When the detection unit detects the predetermined target, the display control unit causes the display unit to display the video in a second range different from the first range.