opencv(7) 逻辑操作

Mat m1 = Mat::zeros(Size(256, 256), CV_8UC3);
Mat m2 = Mat::zeros(Size(256, 256), CV_8UC3);
rectangle(m1, Rect(100, 100, 80, 80), Scalar(255, 255, 0), -1, LINE_8, 0);
rectangle(m2, Rect(150, 150, 80, 80), Scalar(0, 255, 255), -1, LINE_8, 0);
imshow("m1", m1);
imshow("m2", m2);
Mat dst;
bitwise_xor(m1, m2, dst);
imshow("123", dst);

bitwise_xor

bitwise_or

bitwise_and

bitwise_not

std::vector mv;
split(image, mv);
imshow("blue", mv[0]);

把图像分开为三个 mv[0] mv[1] mv[2]

Mat dst;
mv[0] = 0;
// mv[1] = 0;
merge(mv, dst);
imshow("merge", dst);

将其中莫个vector赋新值，并合并为新图像