Image Operations with OpenCV Python

Read Pixel

import cv2
import numpy as np
import pprint

image = cv2.imread('cow.jpg',cv2.IMREAD_COLOR)
pixel= image[55,55]
pprint.pprint(pixel)

Change Pixel

import cv2
import numpy as np
import pprint

image = cv2.imread('cow.jpg', cv2.IMREAD_COLOR)
image[55, 55] = [255, 255, 255]
pixel = image[55, 55]
pprint.pprint(pixel)

Change the color of Region of Image

import cv2
import numpy as np
import pprint

image = cv2.imread('cow.jpg', cv2.IMREAD_COLOR)
image[150:200, 100:150] = [255, 255, 255]
cv2.imshow("image", image)
cv2.waitKey(0)
cv2.destroyAllWindows()

Image Characteristics

import cv2
import numpy as np
import pprint

image = cv2.imread('cow.jpg', cv2.IMREAD_COLOR)
print(image.shape)
print(image.size)
print(image.dtype)

Copy Paste Region

import cv2
import numpy as np
import pprint

image = cv2.imread('cow.jpg', cv2.IMREAD_COLOR)

watch_face = image[200:250,107:194]
image[0:50,0:87] = watch_face

cv2.imshow('image',image)
cv2.waitKey(0)
cv2.destroyAllWindows()

References
https://pythonprogramming.net/image-operations-python-opencv-tutorial/
https://www.youtube.com/watch?v=1pzk_DIL_wo&list=PLQVvvaa0QuDdttJXlLtAJxJetJcqmqlQq&index=4
https://github.com/mhdr/OpenCV/tree/master/004

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