Vehicle Exterior Image Display With Region-Based Compression
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Solution Overview
Problem
Current electronic rearview mirror systems face challenges in providing high-definition images of the surrounding environment while avoiding blind spots, as they either crop images, leading to visual blind spots, or compress full images, resulting in insufficient clarity due to excessive field of view.
Innovation Solution
A display method that divides the original image into areas of concern and no concern based on driving scenarios, using different compression coefficients to maintain clarity in critical areas while compressing less important areas, ensuring no blind spots and conforming to display screen resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If image cropping is used to display only the target area, then the clarity of the displayed area is improved, but visual blind spots are created in the cropped areas
Solution Approach 1:
The patent divides the original wide-FOV image into multiple sub-images corresponding to different display regions. Each sub-image is processed independently with appropriate compression, allowing the system to maintain clarity in the driver's area of concern while preserving peripheral visual information for blind spot monitoring.
Solution Approach 2:
Different compression coefficients are applied to different regions of the image based on their importance. The driver's area of concern receives higher quality processing with lower compression, while peripheral areas use higher compression ratios, optimizing overall image quality while maintaining critical visual information.
2Loss of information
If full-image compression is used to provide complete image coverage, then visual blind spots are eliminated, but image clarity becomes insufficient due to excessive field of view
Solution Approach 1:
The patent segments the full image into multiple regions and applies different compression strategies to each segment. This allows the system to provide complete image coverage while maintaining high clarity in critical areas by processing each segment with region-specific compression coefficients.
Solution Approach 2:
The system applies local quality optimization by assigning different compression coefficients to different image regions. Critical areas such as the driver's area of concern receive lower compression (higher quality), while less critical peripheral areas receive higher compression, thus maintaining overall coverage with sufficient local clarity.
3Measurement precision
If high-resolution camera is used to capture detailed images, then image clarity is improved, but the displayed image still appears pixelated due to display screen resolution limitations
Solution Approach 1:
The patent segments the high-resolution captured image into multiple sub-images that correspond to the display screen's resolution capabilities. Each sub-image is compressed and scaled appropriately, preventing pixelation while maintaining the benefits of high-resolution capture in the displayed regions.
Solution Approach 2:
The system dynamically adjusts compression coefficients and image parameters based on the display screen's resolution characteristics. By changing the compression parameters according to the specific display device being used, the system optimizes the transition from high-resolution capture to standard-resolution display, eliminating pixelation artifacts.
Data Source
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AI summary
The present invention provides a display method for images outside a vehicle and display device thereof. The display method comprises following steps: obtaining an original image from outside the vehicle; obtaining vehicle data and/or driver's data to determine the original image's usage scenario; according to the usage scenario, the original image is divided into at least one first area image of concern and at least one second area image of no concern; determining respectively a first compression coefficient corresponding to the first area image and a second compression coefficient corresponding to the second area image, wherein the first compression coefficient is smaller than the second compression coefficient; and according to the first compression coefficient and the second compression coefficient, performing partition compression on the first area image and the second area image to obtain a display image. By following these steps, the display method can not only meet the clarity of driver's area of concern during driving, but also take into account the display of images in other areas to ensure that there are no blind spots during the entire driving process.