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fanfuhan OpenCV 教學013 ~ OpenCV的-013圖片翻轉(顛倒/轉向/旋轉) 資料來源: https://fanfuhan.github.io/ https://fanfuhan.github.io/2019/03/27/opencv-013/ GITHUB:https://github.com/jash-git/fanfuhan_ML_OpenCV X軸翻轉，flipcode = 0 Y軸翻轉, flipcode = 1 XY軸翻轉, flipcode = -1 C++ #include #include using namespace std; using namespace cv; /* * 图像翻转 */ int main() { Mat src = imread("../images/test.png"); if (src.empty()) { cout << "could not load image.." << endl; } imshow("input", src); Mat dst; // X轴 倒影 flip(src, dst, 0); imshow("x_flip", dst); // Y轴 镜像 flip(src, dst, 1); imshow("y_flip", dst); // XY轴 对角 flip(src, dst, -1); imshow("xy_flip", dst); waitKey(0); return 0; } Python import cv2 as cv import numpy as np src = cv.imread("D:/vcprojects/images/test.png") cv.namedWindow("input", cv.WINDOW_AUTOSIZE) cv.imshow("input", src) # X Flip 倒影 dst1 = cv.flip(src, 0); cv.imshow("x-flip", dst1); # Y Flip 镜像 dst2 = cv.flip(src, 1); cv.imshow("y-flip", dst2); # XY Flip 对角 dst3 = cv.flip(src, -1); cv.imshow("xy-flip", dst3); # custom y-flip h, w, ch = src.shape dst = np.zeros(src.shape, src.dtype) for row in range(h): for col in range(w): b, g, r = src[row, col] dst[row, w - col - 1] = [b, g, r] cv.imshow("custom-y-flip", dst) cv.waitKey(0) cv.destroyAllWindows()