图像边缘检测源代码VC＋＋

Program: ED256 Author: James Matthews Date: 19/10/2000 Version: 2.1 =============================== V e r s i o n s =============================== v2.1 (19th October, 2000) - Will only draw the edges adjacent to the real picture if it fits. - Added prototyping detection. See http://www.generation5.org/vision.shtml - Flicker-free drawing. - Wait cursor during long operations, and status bar explanations. v2.0 (17th January, 2000) - Added the filter dialog. - Much better edge detection, using Laplacian Approximation - Edges drawn to the side of the picture. - Edges now saved to bitmap, won't disappear on redraw. v1.0 - First public release. =============================== B u g s a n d Q u i r k s =============================== v2.1 - The Windows GDI is TOO SLOW! I need a better way than GetPixel to get the colour information. If anyone has a quick routine that gives me a RGB value for any colour-depth bitmap...I'd REALLY appreciate it.