[PYTHON/OPENCV] getRotationMatrix2D 함수 : 이미지 회전하기

■ getRotationMatrix2D 함수를 사용해 이미지를 회전하는 방법을 보여준다.

▶ 예제 코드 (PY)


import cv2
import numpy as np

imageNDArray = cv2.imread("source.jpg")

imageHeight, imageWidth = imageNDArray.shape[:2]

matrixNDArray = cv2.getRotationMatrix2D((imageWidth / 2, imageHeight / 2), 90, 1)

rotateImageNDArray = cv2.warpAffine(imageNDArray, matrixNDArray, (imageWidth, imageHeight))

cv2.imwrite("target.jpg", rotateImageNDArray)

cv2.imshow("rotate image", rotateImageNDArray)

cv2.waitKey(0)

cv2.destroyAllWindows()

import cv2

import numpy as np

imageNDArray = cv2.imread("source.jpg")

imageHeight, imageWidth = imageNDArray.shape[:2]

matrixNDArray = cv2.getRotationMatrix2D((imageWidth / 2, imageHeight / 2), 90, 1)

rotateImageNDArray = cv2.warpAffine(imageNDArray, matrixNDArray, (imageWidth, imageHeight))

cv2.imwrite("target.jpg", rotateImageNDArray)

cv2.imshow("rotate image", rotateImageNDArray)

cv2.waitKey(0)

cv2.destroyAllWindows()

source.jpg