Vehicle Camera Compensation Using Capture-Time Differences
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Solution Overview
Problem
Conventional image information compensation techniques for vehicles with abnormal cameras are limited to overlapping imaging regions, leading to imbalances and recognition errors in displayed images and vehicle control applications.
Innovation Solution
An image information acquisition apparatus that generates compensation target object image information for abnormal cameras based on compensation source image information from normal cameras, using a time difference between imaging timings for non-overlapping camera arrangements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If image compensation is performed using overlapping imaging regions of multiple cameras, then image information can be acquired from normal cameras to compensate for abnormal cameras, but image incongruity and recognition errors occur in displayed images
Solution Approach 1:
The patent applies parameter changes by introducing time difference as a new parameter for image compensation. Instead of relying solely on spatial overlap between camera imaging regions, the system compensates for abnormal cameras by capturing images at different time points and using temporal information to generate accurate compensation images, thereby eliminating recognition errors while maintaining compensation reliability
2Device complexity
If camera imaging regions are arranged without overlap, then device complexity is reduced, but image compensation becomes impossible using conventional techniques
Solution Approach 1:
The patent applies dimensionality change by transitioning from spatial compensation (relying on overlapping imaging regions in space) to temporal compensation (using time difference between captures). This allows cameras with non-overlapping imaging regions to still provide accurate compensation by capturing images at different time points, thus maintaining compensation capability while simplifying camera arrangement
3Productivity
If image compensation is performed without considering time difference, then compensation speed is improved, but image information becomes inaccurate due to temporal mismatch
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing time difference information between camera captures. This time difference data is prepared in advance and used during compensation processing to accurately align images from different time points, thereby maintaining both high compensation speed and high image information accuracy without requiring complex real-time adjustments
Data Source
AI summary
An image information acquisition apparatus acquires image information based on a captured image of surroundings of a vehicle. The acquisition apparatus acquires whether a state of each of a plurality of cameras mounted in the vehicle is a normal state or an abnormal state. The acquisition apparatus generates compensation target object image information corresponding to an abnormal camera in the abnormal state among the cameras, based on compensation source image information based on the captured image acquired by a normal camera in the normal state among the cameras. The acquisition apparatus generates the compensation target object image information, based on: the compensation source image information; and a time difference between a timing at which an image should be captured by the abnormal camera and a timing at which an image is captured by the normal camera regarding the same imaging target object.