RAw格式图片的显示，边缘检测，包括SOBEL算子，具有不同模板的拉普拉斯算子边缘检测，以及一些简单的滤波方式-RAw format the display of images, edge detection, including edge detections of the SOBEL operator, the Laplacian operator with a different template , as well as some simple filtering approach