Image Processing Apparatus Pixel Displacement Prevention
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Solution Overview
Problem
Existing image processing technologies face issues with pixel displacement and visual distortion when synthesizing images with different resolutions, leading to character distortion and color shifts during printing or display, due to differences in pixel values and interpolation algorithms.
Innovation Solution
An image processing apparatus that adjusts the number of pixels in the vertical and horizontal directions by dividing them by the maximum ratio of resolutions and computing a remainder to ensure it becomes 0, thereby preventing pixel displacement and distortion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If image data items with different resolutions are synthesized directly, then the synthesis process is simple, but pixel displacement and visual distortion occur
Solution Approach 1:
The patent applies preliminary action by performing resolution ratio calculation and image size adjustment before the synthesis process. The system calculates the resolution ratio of each image data item relative to the highest resolution image, then adjusts the sizes of lower resolution images accordingly. This preliminary preparation ensures that all image data items have compatible dimensions for synthesis, preventing pixel displacement and visual distortion while maintaining a relatively simple synthesis process.
2Adaptability or versatility
If image data is enlarged using interpolation algorithms, then the image can be displayed at higher resolutions, but blurring occurs in border sections
Solution Approach 1:
The patent applies parameter changes by modifying the resolution ratio parameter of each image data item. Instead of using fixed interpolation algorithms, the system calculates specific resolution ratios based on the relationship between different image resolutions. By adjusting the image size according to these calculated ratios, the system avoids the need for aggressive interpolation that causes blurring, while still enabling flexible display at various resolutions.
3Productivity
If the number of pixels is not adjusted according to resolution ratios, then the processing is faster, but pixel displacement causes character distortion and color shift
Solution Approach 1:
The patent applies parameter changes by calculating and applying resolution ratio parameters to adjust the number of pixels in each image data item. The system determines the resolution ratio of each image relative to the highest resolution image and uses this parameter to calculate the appropriate size adjustment. This ensures that pixel positions are maintained accurately across all images, preventing character distortion and color shift, while the processing remains efficient through mathematical ratio calculations rather than brute-force processing.
Data Source
AI summary
Image forming apparatus, which prevents the occurrence of displacement of the positions of pixels between image data items forming a synthetic image, and eliminates distortion of a character and color shift in character regions and non-character regions. An image size adjustment section obtains, when synthesizing a plurality of image data items to create one image, a remainder by dividing the number of vertical and horizontal pixels of input image data by a least common multiple of the ratio of resolutions of a plurality of image data items, for vertical and horizontal directions of the image. The input image data is processed by means of the result of computing the remainder, so that the remainder becomes 0 when obtaining the remainder by dividing the number of vertical and horizontal pixels of the input image data by the least common multiple of the ratio of the resolutions of the image data items.