An example of a ROI - the program loads an image and given the coordinates of ROI sets using the cvSetImageROI (). It then calls the function cvAddS (), which adds to the array elements (pixels of the image), given a scalar value. The result is a col

对于一幅图像，很多时候我们感兴趣的是图像中的某部分，同时有时候要对目标进行跟踪时，需要选取目标特征，所以要提取图像的感兴趣区域。使用cvsetImageROI函数-For an image, many times we are interested in a certain part of the image, sometimes at the same time to the target track, you need to the target feature, so you want