图像处理，使用opencv对图像颜色直方图特征提取-Image processing using opencv image color histogram feature extraction

计算图像的直方图，通过查找表修改图像外观，直方图均衡化，反投影直方图以检测特定的图像内容，实用均值漂移算法查找物体，实用比较直方图检索相似图片-Files: histogram.h histograms.cpp correspond to Recipes: Computing the Image Histogram Applying Look-up Tables to Modify Image Appearance Files: colorhistogra