Dynamic Compression Rate Adjustment for Magnified Image Quality
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Solution Overview
Problem
Conventional image capturing apparatuses face challenges in reducing the visibility of encoding distortion when magnifying images for focus checking, while maintaining data transmission bandwidth and preventing an increase in data amount.
Innovation Solution
The apparatus includes an image capturing unit, a compression unit, a display control unit, and an instruction unit that adjusts the compression rate of image data based on user magnification instructions, reducing encoding distortion by decreasing the compression rate when magnification is performed, thereby maintaining a constant data transmission amount.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If compression is applied to image data for bandwidth reduction, then data transmission efficiency is improved, but encoding distortion becomes visible in magnified images
Solution Approach 1:
The compression rate is dynamically adjusted based on the magnification state. When magnification is detected, the compression rate is reduced to minimize encoding distortion in the magnified region. This dynamic adjustment allows the system to maintain high compression efficiency during normal display while ensuring image quality during magnification for focus checking.
Solution Approach 2:
The system applies different compression rates to different display scenarios. For the magnified region used in focus checking, a lower compression rate is applied to maintain local image quality. For non-magnified regions, higher compression rates can be used to optimize bandwidth utilization.
2Manufacturing precision
If compression rate is reduced to improve image quality during magnification, then encoding distortion visibility is reduced, but data amount increases
Solution Approach 1:
Instead of reducing compression rate for the entire image, the system applies lower compression rate only to the specific magnified region where quality is critical. The non-magnified regions continue to use higher compression rates, thus partially applying the quality improvement where needed while minimizing the overall data amount increase.
3Productivity
If high compression rate is used to maintain data transmission bandwidth, then bandwidth utilization is optimized, but frame rate may decrease due to processing load
Solution Approach 1:
The system dynamically adjusts compression rates based on operational context. During magnification operations, lower compression rates are applied to critical regions to maintain frame rate and responsiveness. During normal operation, higher compression rates are used to optimize bandwidth utilization. This dynamic adaptation prevents frame rate degradation while maintaining efficient bandwidth usage.
Data Source
AI summary
An image capturing apparatus includes an image capturing unit configured to capture an image of an object and generate image data, a compression unit configured to compress the image data generated by the image capturing unit, a display control unit configured to decode the image data compressed by the compression unit and display the decoded image data on a display unit, and an instruction unit configured to issue an instruction to magnify an image to be displayed on the display unit, wherein, in a case where the instruction unit issues the instruction to magnify the image to be displayed on the display unit, the compression unit reduces a compression rate of the image data.