Introduction - If you have any usage issues, please Google them yourself
VB convert color images to grayscale image, first open the file and displayed in Picture1, save the converted image, save it as a bitmap file (* bmp.) |.* Bmp, other formats are not tested, I do not know whether do the same, open a JPG format picture, click the Convert button on the right to display the image conversion program that is, the process is quite slow, slowly waiting for the results