J2ME实现小球在屏幕上弹跳，碰到屏幕边缘后回弹并改变颜色，可供J2ME学习使用，代码非常简洁，算法清楚简单-J2ME the ball bounce on the screen, the rebound after encounter the edge of the screen and change the color, available J2ME learn to use, the code is very simple, clear and simple algorithm

对给出的图片先后进行灰度处理，高斯滤波，边缘分析，将彩色图片的轮廓边界给出。在图片的边界上，求导之后不连续点就是强边缘点。(The images are processed, the Gauss filter, the edge analysis, and the contour boundary of the color pictures are given. On the boundary of the picture, the discontinuous point is the stro