Lesson01
OpenCV提供imread()及imwrite()函式來支援各式圖檔(BMP, PNG, JPG, TIF)
轉檔：將png檔案轉成jpg
import cv2
image = cv2.imread('flower.png')
cv2.imwrite('MyFlower.jpg', image)
轉檔：將全彩圖片轉為灰階
import cv2
grayImage = cv2.imread('flower.png', cv2.IMREAD_GRAYSCALE)
cv2.imwrite('MyPicFlower.png', grayImage)
複製區塊圖片
import cv
import numpy as np
img = cv.imread('MyPic.png')
my_copy = img[0:100, 0:100]
img[300:400, 300:400] = my_copy
cv2.imshow('my image', img)
cv2.waitKey()
cv2.destroyAllWindows()