Blind Spot Image Compression for Natural Speed Perception
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Solution Overview
Problem
Existing vehicle driving assistance systems distort the appearance of approaching vehicles, making them seem to suddenly accelerate or decelerate due to differences in image processing between rear and blind spot regions, leading to unnatural visual representations.
Innovation Solution
An imaging device and image processing unit that capture and process images to compress the blind spot region, ensuring the position transition of objects on the captured image matches the side mirror's view, preventing unnatural speed and shape distortions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the imaging device captures a wider range than the side mirror to cover the blind spot region, then the coverage area is improved, but the visual recognition accuracy deteriorates because objects appear to suddenly accelerate or decelerate
Solution Approach 1:
The patent applies different image processing methods to different regions of the captured image. The rear region (within side mirror viewing range) is processed to match the side mirror's visual characteristics, while the blind spot region (adjacent to rear region) is compressed horizontally. This local differentiation allows the system to maintain natural visual perception in the rear region while extending coverage into the blind spot region, resolving the contradiction between coverage area and visual recognition accuracy
Solution Approach 2:
The patent changes the horizontal compression parameter for the blind spot region image data. By applying horizontal compression with a specific compression ratio to the blind spot region, the system adjusts the positional parameters of objects in this region to prevent sudden apparent acceleration or deceleration, thereby maintaining visual recognition accuracy while preserving the extended coverage area
2Measurement precision
If the blind spot region image data is compressed to match side mirror viewing characteristics, then visual recognition accuracy is improved, but the image processing complexity increases
Solution Approach 1:
The patent segments the captured image into two distinct regions: the rear region (within side mirror viewing range) and the blind spot region (adjacent to rear region). Each region is processed independently with appropriate image processing parameters. This segmentation approach enables precise control over visual characteristics in each region while maintaining manageable processing complexity through region-specific operations rather than global processing
Solution Approach 2:
The patent applies partial image processing by compressing only the blind spot region horizontally, while leaving the rear region processing simpler to match side mirror characteristics. This partial action approach focuses computational resources only where needed (in the blind spot region) rather than applying complex processing to the entire image, thereby improving visual recognition accuracy without unnecessarily increasing overall processing complexity
Data Source
AI summary
Disclosed is a device which is mounted on a vehicle, and captures a rear region of a vehicle and a blind spot region outside of a viewing range of a side mirror adjacent to the rear region of the vehicle. A captured image is subjected to image processing so that the blind spot region on the captured image is compressed. The image after subjected to the image processing is displayed so as to be visible to a driver. The blind spot region on the captured image is compressed so that a sudden change of position of a object in a horizontal direction on the captured image is suppressed, as against a change of distance from the vehicle to the object. Compression is performed so that the ratio of transition of position of the object in the horizontal direction on the captured image to transition of distance from the vehicle to the object is substantially the same as the ratio of transition of position of the object in the horizontal direction in the side mirror to transition of distance from the vehicle to the object. The phenomenon of the object's appearance as if the object suddenly accelerates in the vicinity of the vehicle is avoided.