That s VB.NET source. I work with XP Pro. Three hard pointsmaximum frames rate : 90 frames/sec (with Philips SPC 900NC PC Camera)reat multiple image format (RGB24, I420 with DIB) not get better than 15 frames/sec with 640x480 resolution,

DIB class to access 24bit bitmap with alpha channel. Not fully tested...

对真彩图像进行灰度化，二值化及负片等灰度变换处理-For true color image graying, binarization and negative, such as gray-scale conversion process