ROIの切り抜き/貼り付け

V2.4.11, V3.0.0
In [1]:
# -*- coding: utf-8 -*-
import cv2
import numpy as np

#Ipythonで表示用の設定
import matplotlib.pyplot as plt
%matplotlib inline

#画像読込
in_img = cv2.imread("lena.jpg")

#ROIの切り出し
ROI = in_img[200:330, 200:350]

#ROIの書き込み
in_img[200:330, 20:170] = ROI

#OpenCVがBGRなのでRGBに変換
disp_ROI  = cv2.cvtColor(ROI,  cv2.COLOR_BGR2RGB)
disp_in_img  = cv2.cvtColor(in_img,  cv2.COLOR_BGR2RGB)

#画像表示
plt.subplot(121)
plt.imshow(disp_ROI)
plt.subplot(122)
plt.imshow(disp_in_img)
Out[1]:
<matplotlib.image.AxesImage at 0x57814d0>

inserted by FC2 system