c_cpp 从3channel矩阵opencv中减去矩阵

Posted 2021-05-14

			// subtract IR from BGR
			Vec3u tmp;
			for (int i = 0; i < ir.rows; i++) {
				for (int j = 0; j < ir.cols; j++) {
					tmp = bgr.at<Vec3u>(i,j);
					tmp[0] = tmp[0] - ir.at<ushort>(i,j);
					tmp[1] = tmp[1] - ir.at<ushort>(i,j);
					tmp[2] = tmp[2] - ir.at<ushort>(i,j);

					bgr.at<Vec3u>(i, j) = tmp;
				}
			}