Dynamic Image Borderline Adjustment for Vehicle Top-View Systems
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Solution Overview
Problem
Existing top-view image display systems for vehicles suffer from partial image disappearance or appearance due to changes in camera attitude, caused by factors like occupancy or load, resulting in distorted images and missing portions.
Innovation Solution
The method involves calculating displacement vectors for images captured by multiple cameras, determining image borderlines to ensure consistent displacement vector directions, and clipping image portions to maintain a cohesive combined image, using pre-stored tables for various vehicle attitudes and loads to adjust image clip positions dynamically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If images are captured using multiple cameras and combined to form a top-view image, then the driver can observe the vehicle surroundings from a virtual point of view, but image parts may disappear or appear unexpectedly due to changes in camera attitude caused by occupancy or load
Solution Approach 1:
The patent applies dynamics by making the image combination process adaptive to changing vehicle conditions. The system dynamically adjusts the combination of images from multiple cameras based on detected vehicle occupancy and load, which change the camera attitudes. This allows the system to maintain reliable top-view images despite variations in camera positions caused by different loading conditions.
Solution Approach 2:
The patent changes parameters by adjusting image combination parameters according to vehicle load and occupancy. The system detects changes in vehicle conditions and modifies how images are combined - specifically adjusting the weighting and alignment of images from different cameras to compensate for attitude changes, thereby preventing image parts from disappearing or appearing unexpectedly.
2Adaptability or versatility
If the camera attitude changes due to occupancy or load, then the vehicle can carry different numbers of occupants or loads, but the combined image becomes distorted with missing portions
Solution Approach 1:
The patent implements feedback by detecting vehicle occupancy and load conditions, then using this information to adjust the image combination process. The system continuously monitors vehicle state changes and feeds this information back to modify how images are processed and combined, ensuring accurate top-view images regardless of the number of occupants or load carried.
Solution Approach 2:
The patent applies preliminary action by pre-establishing the relationship between vehicle load/occupancy conditions and the corresponding image combination parameters. The system has pre-defined adjustment strategies for different vehicle states, allowing it to quickly and accurately compensate for camera attitude changes without real-time complex calculations.
3Device complexity
If fixed image borderlines are used for combining images, then the processing is simple, but image parts disappear at borders when camera attitude changes
Solution Approach 1:
The patent makes image borderlines dynamic rather than fixed. The system adjusts image borderlines based on detected vehicle occupancy and load conditions, allowing the borders to shift and adapt to camera attitude changes. This dynamic adjustment prevents image parts from disappearing at borders while maintaining relatively simple processing through predefined adjustment rules.
Data Source
AI summary
An image display method for displaying a combined image by capturing images at areas surrounding a vehicle includes a) calculating a plurality of displacement vectors for a plurality of points taken on images captured by a plurality of cameras upon the application of a load that changes the attitude of a camera on the vehicle, and b) determining each image borderline between two adjacent images such that a difference in the directions of displacement vectors in the neighborhood of each image borderline between two adjacent images does not exceed a predetermined angle.