AVM Image Synthesis for Blind Spot Prevention
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Solution Overview
Problem
Existing Around View Monitoring (AVM) systems often cause objects in blind spots to disappear due to differences in viewing angles when synthesizing images from multiple cameras, leading to potential safety hazards during vehicle maneuvering.
Innovation Solution
The AVM system performs lens distortion correction and selects an image display method based on steering information and object direction, ensuring images are synthesized on a single viewing angle to prevent overlapping regions, thereby avoiding blind spots.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If images from multiple cameras with different viewing angles are synthesized using traditional AVM methods, then a 360-degree omnidirectional view is achieved, but objects in overlapping regions disappear creating blind spots
Solution Approach 1:
The patent applies dynamics by making the image synthesis method adaptive rather than static. The system dynamically selects between first and second image synthesis methods based on real-time conditions: when the vehicle is stationary or moving straight, it uses the first method (synthesizing all camera images including overlapping regions); when the vehicle is turning, it uses the second method (excluding overlapping regions from synthesis). This dynamic adaptation eliminates blind spots caused by object disappearance in overlapping regions while maintaining comprehensive monitoring coverage.
2Area of stationary object
If overlapping regions are included in image synthesis, then complete 360-degree coverage is maintained, but objects in these regions may disappear due to viewing angle differences
Solution Approach 1:
The system dynamically adjusts the image synthesis strategy based on vehicle motion state. During turning maneuvers, it excludes overlapping regions from synthesis to prevent object information loss, while during straight-line travel, it includes them to maintain complete coverage. This dynamic approach balances coverage area and information integrity.
Solution Approach 2:
The patent changes the parameter of image region inclusion/exclusion based on vehicle steering state. When the vehicle is turning, the system changes the synthesis parameters to exclude overlapping regions; when straight, it uses parameters that include all regions. This parameter change resolves the contradiction between coverage area and information loss.
3Device complexity
If a fixed image synthesis method is used regardless of vehicle motion state, then system complexity is reduced, but blind spots appear during steering maneuvers
Solution Approach 1:
The patent implements a dynamic image synthesis system that automatically switches between different synthesis methods based on vehicle steering detection. The controller detects steering state and dynamically selects: Method 1 (include overlapping regions) when straight, Method 2 (exclude overlapping regions) when turning. This dynamic adaptation improves monitoring reliability during steering without excessive complexity increase.
Solution Approach 2:
The system uses feedback from steering detection to control the image synthesis process. The controller continuously monitors vehicle steering state and uses this feedback to adjust the image synthesis method in real-time, ensuring appropriate handling of overlapping regions based on actual driving conditions.
Data Source
AI summary
A method of operating an Around View Monitoring (AVM) system according to the present invention includes: obtaining image data from image sensors disposed at different locations of a vehicle; performing image processing on the image data for improving an image; performing lens distortion correction on the processed image data; detecting an overlapping region from the corrected image data; selecting an image display method so as to prevent the detected overlapping region from overlapping when the image is synthesized, and synthesizing the image data according to the selected image display method; and outputting the synthesized image data.