python
import cv2 as cv
def function():
img = cv.imread("../images/flower.jpg")
cv.imshow("input", img)
img_splited = cv.split(img)
img_splited[0][:, :] = 0
dst1 = cv.merge(img_splited)
cv.imshow("blue_0", dst1)
img_splited = cv.split(img)
img_splited[1][:, :] = 0
dst2 = cv.merge(img_splited)
cv.imshow("green_0", dst2)
img_splited = cv.split(img)
img_splited[2][:, :] = 0
dst3 = cv.merge(img_splited)
cv.imshow("red_0", dst3)
cv.mixChannels(img, dst3, [2, 0])
cv.imshow("mix_2,0(input and red_0)", dst3)
function()
cv.waitKey(0)
cv.destroyAllWindows()
python中的新知识点
- cv.split(numpy)
- cv.merge()
c++
#include "all.h"
using namespace std;
using namespace cv;
void MyClass::day008() {
Mat img = read(PATH + "\\images\\flower.jpg");
imshow("input", img);
vector<Mat> mv;
split(img, mv);
Mat dst1, dst2, dst3;
mv[0] = Scalar(0);
merge(mv, dst1);
imshow("blue=0", dst1);
split(img, mv);
mv[1] = Scalar(0);
merge(mv, dst2);
imshow("green=0", dst2);
split(img, mv);
mv[2] = Scalar(0);
merge(mv, dst3);
imshow("red=0", dst3);
waitKey(0);
}
c++中的新知识点
- std::vector
- split();
- merge();
