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Python About ROI
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#coding: utf-8 | |
import cv2 | |
import numpy as np | |
rows = 256 | |
cols = 256 | |
img = np.zeros((rows,cols,3), dtype=np.uint8) | |
#ここでimgの中身を見てみると?? | |
#print img | |
#この時点ではまだ真っ黒の画像です | |
cv2.imshow('black', img) | |
cv2.waitKey(0) | |
cv2.destroyAllWindows() | |
#色の設定 | |
#全部をredでベタ塗りにして、縦方向10から30,横方向50から80までを白で塗りつぶす | |
img[:,:] = [0, 0, 255] | |
img[10:30,50:80] = [255, 255, 255] | |
#保存したいとき | |
#cv2.imwrite('redandwhite.jpg', img) | |
#ウィンドウに表示 | |
cv2.imshow('red and white', img) | |
cv2.waitKey(0) | |
cv2.destroyAllWindows() |
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