JAVA图像处理读取BMP图像、用RGB获取灰度信息、直方图均衡化、拉普拉斯2阶滤波、平滑锐化、增强滤波、局部阀值处理、全局阀值处理等-Java image processing to read the BMP image, obtained by RGB gray level information, histogram equalization, 2nd order Laplace filtering, smoothing, sharpening, enhanced filtering, p