A method for image background color whitening and denoising

Abstract

The invention discloses a processing method for whitening of the background color of a picture and denoising. The steps of the present invention are as follows: binarize the original picture; provide parameter values ​​from the outside; create a two-digit array DscImage; carry out block statistics of the picture according to the side length of the segmented picture; obtain the area information of the nth block picture; according to the RGB color value, Calculate the sampling point array DSB for the nth block image at the color sampling interval; count the color threshold of the nth block image; traverse each pixel of the nth block image; obtain the final DscImage; step (10), externally pass the parameter quality Calculate the value of the color threshold ratio, sampling interval, and side length of the segmented image; use these three parameter values ​​to execute and repeat the above steps to obtain DscImage1 and DscImage2; traverse the pixels of the images DscImage1 and DscImage2 in turn and judge, and use the traversed DscImage2 to generate images. The invention prevents problems such as graying of the background color and unclear characters when the word is printed.

Description

technical field [0001] The invention belongs to the field of computer image processing, and removes the background of the image or the shadow produced by the light. Background technique [0002] In the Internet+ era, all aspects of human beings need to use the Internet from production to life. People are gradually transferring traditional offline behaviors to online, and the same is true in education. Students are no longer limited to learning in offline classes, but can also do homework online, and teachers can directly correct remotely. Taking photos and uploading jobs, as a combination of online and offline, has certain practicability. However, the photos taken may not be clear enough due to factors such as light. At this time, we need to optimize the pictures and whiten the background to remove noise. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide a method for whitening the background color of a picture and denoising in view of ...

AI Technical Summary

Problems solved by technology

However, the photos taken may not be clear enough due to the influence of light and other factors. At this time, we need to optimize the picture and whiten the background color to remove noise.