OpenCV_python的文档摘要

靡不有初，鲜克有终

先在这里放着官方文档的链接OpenCV官方文档

OpenCV对图像的基本操作

对于RGB图像的操作 [ blue, green, red]

# accessing RED value
>>> img.item(10,10,2)
59
# modifying RED value
>>> img.itemset((10,10,2),100)
>>> img.item(10,10,2)
100

获取图像基本特征

>>> print( img.shape )
(342, 548, 3)

可以利用直接使得像素相等的方法来对Image进行操作

Here I am selecting the ball and copying it to another region in the image

>>> ball = img[280:340, 330:390]
>>> img[273:333, 100:160] = ball

Image Addition（图像相加、重叠）
利用了相叠加的公式

dst=α⋅img1+β⋅img2+γ

img1 = cv.imread('ml.png')
img2 = cv.imread('opencv-logo.png')
dst = cv.addWeighted(img1,0.7,img2,0.3,0)
cv.imshow('dst',dst)
cv.waitKey(0)
cv.destroyAllWindows()

Image Processing