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import cv2
import matplotlib.pyplot as plt
image = cv2.imread('image.jpg')
(h, w, c) = image.shape
print image.shape
(b, g, r) = image[0, 0]
print image[0, 0]
image[0, 0] = [0, 0, 255]
cX, cY = (w/2, h/2)
# split image
tl = image[0:cY, 0:cX]
tr = image[0:cY, cX:w]
bl = image[cY:h, 0:cX]
br = image[cY:h, cX:w]
def show(image):
plt.imshow(image)
plt.axis('off')
plt.show()
show(tl)
show(tr)
show(bl)
show(br)
image[0:cY, 0:cX] = (0, 255, 0)
show(image)