Opencv实现图像灰度线性变换

 #include; #include using namespace cv; using namespace std; int main(int argc, char** argv) { Mat src,dst; src = imread("1.jpg-600"); if (!src.data) { cout << "could not load image" << endl; return -1; } namedWindow("input", CV_WINDOW_AUTOSIZE); imshow("input", src); int rows = src.rows; int cols = src.cols; float alpha = 1.2, beta = 10; dst = Mat::zeros(src.size(), src.type()); for (int row = 0; row (row, col)[0]; int g = src.at(row, col)[1]; int r = src.at(row, col)[2]; dst.at(row, col)[0] = saturate_cast((alpha*b + beta)); dst.at(row, col)[1] = saturate_cast((alpha*g + beta)); dst.at(row, col)[2] = saturate_cast((alpha*r + beta)); } else if(src.channels()==1){ int v = src.at(row, col); dst.at(row, col) = saturate_cast(alpha*v + beta); } } } namedWindow("output", CV_WINDOW_AUTOSIZE); imshow("output", dst); waitKey(0); return 0; }