In-Vehicle Video Compositing for Warning Display Abnormality Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In-vehicle display systems face challenges in ensuring accurate display of warning lights due to potential abnormalities in the image generation unit, which can lead to incorrect information being displayed to drivers, compromising safety.
Innovation Solution
A video processing device with a receiver, compositing image generation unit, abnormality detection unit, comparison unit, and output control unit that generates and combines OSD images with input images, detecting and correcting abnormalities to ensure accurate display of important information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an OSD image is generated inside the display device to replace a warning display in an input image, then the display device can continue to display warning information even when the image generation unit has abnormality, but the composite image itself may be defective and wrong information could be displayed
Solution Approach 1:
The patent performs preliminary abnormality detection on the composite image before it is displayed to the driver. The abnormality detection unit checks the composite image generated by combining the input image and OSD image, and the comparison unit compares the composite image with the original input image to identify any defects. This preliminary detection ensures that defective composite images are identified and handled before they can mislead the driver, thus maintaining information accuracy while preserving display continuity.
Solution Approach 2:
The patent implements a feedback mechanism where the abnormality detection unit continuously monitors the composite image and provides feedback to the display control unit. When abnormality is detected in the composite image (such as incorrect warning light display), the system receives abnormality information and can switch to displaying only the original input image or display a notification to the driver. This feedback loop ensures that information accuracy is maintained while allowing the OSD functionality to operate.
2Productivity
If the composite image is displayed without verification, then the display process is simple and fast, but the system cannot detect abnormalities in the composite image which may lead to wrong information being displayed
Solution Approach 1:
The patent applies partial verification by focusing the abnormality detection specifically on critical regions of the composite image, such as areas where warning lights are displayed. The comparison unit compares these critical areas between the composite image and the original input image, rather than performing a complete pixel-by-pixel analysis of the entire image. This approach provides sufficient abnormality detection accuracy for safety-critical information while minimizing the impact on display processing speed.
Data Source
AI summary
A video processing device includes a receiver that successively receives input images, each having a prescribed overlapping image superimposed in one or more areas thereof, a compositing image generation unit that successively generates compositing images based on the external information, a video compositing unit that successively generates composite images, a compositing abnormality detection unit that determines whether one or more areas of the composite image have abnormality or not, a comparison unit that compares the one or more areas of the input image with those of the composite image to determine whether or not the respective areas match, if it is determined that the composite image have no abnormalities, and an output control unit that outputs the input image if it is determined that the respective areas match, and outputs the composite image when it is determined that the respective areas do not match.