User scanner to scan the image of the paper, I want to remove the white background, different scanning quality, white color value is different, how will scan the BMP image filtering white get PNG images,

CodePudding user response:

Success will not too high! , because want to consider white, pure white is RGB (255255255);
May be a problem:
1, the gray images,
2, outside the image contour is not obvious, such as pictures, have broken hair, you can perfect handle, you can apply for a patent may be worse than the ma money,
3, items in the scan itself is not flat, scanning, and there are shadows, more difficult, such as someone to scan my old contract, wrinkled, this scan, certainly can't cutout,
4, items in the scan itself has a certain gray level (in grey, deep grey, light grey), certainly can't cutout,
5, your request, to put it bluntly, is don't need to keep, take out, leaving is needed, and saved as a PNG file, "" "" "to remove the outer contour,
6, can go to download a certificate 3.0, studio dedicated to your request as photos in the background!