Open CV 对图像数据进行缩短运算实例

#include <opencv2/core/core.hpp>#include <opencv2/highgui/highgui.hpp>#include <iostream>using namespace std;using namespace cv;void colorReduce (Mat& inputImage,Mat& outputImage,int div);int main(){Mat srcImage = imread("F:\\test_all\\vc2010\\test\\opencv_xs\\opencv_xs\\4.jpg");imshow("test",srcImage);Mat dstImage;dstImage.create(srcImage.rows,srcImage.cols,srcImage.type());double time0 = static_cast<double>(getTickCount());colorReduce(srcImage,dstImage,32);time0 = ((double)getTickCount() -time0)/getTickFrequency();imshow("adc",dstImage);waitKey(0);}void colorReduce(Mat& inputImage,Mat& outputImage,int div){outputImage = inputImage.clone();int rowNumber = outputImage.rows;int colNumber = outputImage.cols*outputImage.channels();for(int i = 0;i < rowNumber;i++){uchar* data =outputImage.ptr<uchar>(i);for(int j = 0;j < colNumber;j++){data[j] = data[j]/div*div ;//div/2;}}}