模版图片与测试图片的对比，计算相似度参数，C语言读取并输出BMP文件-Template images and test the contrast of a picture, the calculation of similarity parameters, the C language to read and print BMP files

利用最大有效圆法或最大内切圆法提取掌纹掌脉图像的roi(Using maximum effective circle method or maximum inscribed circle method to extract palm print palm vein image ROI)