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How to convert a photographed image into a clearer image?

2022-09-05 09:06:22CSDN Q&A

How to convert a photographed image into a sharper image?

I'm working on something now. The input is a photographed paper image with a lot of noise in it. After the octree is subtracted, the white threshold segmentation is performed (pixels close to white become white),In fact, the effect is not bad.
But the color image of the color image is not correct, how to correct it?The reason for the problem is that the paper has color, the color on the paper will be color cast, and the final quantified color will be darker.
Another problem is that there are holes in the text and how to adjust the edges of the text. Thank you.
Only need to provide the idea of ​​image processing, and it can be realized by C++ programming.

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