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Reading an image using Python OpenCv module
In OpenCv module,we can use the function cv2.imread() to read an image. When inputting the image path, the image should be in the working directory or a full path of image should be given.
cv2.IMREAD_COLOR − This function loads a color image and any transparency of image will be neglected. It is the default flag.
cv2.IMREAD_GRAYSCALE − This function loads image in grayscale mode
cv2.IMREAD_UNCHANGED − This function loads image as such including alpha channel
Source Image
![Source Image](https://www.tutorialspoint.com/assets/questions/media/13873/source_image.jpg)
Example
import numpy as np import cv2 my_img = cv2.imread('C:/Users/TP/Desktop/poor/poverty_india.jpg', 0) cv2.imshow('image', my_img) k = cv2.waitKey(0) & 0xFF # wait for ESC key to exit if k == 27: cv2.destroyAllWindows() elif k == ord('s'): cv2.imwrite('C:/Users/TP/Desktop/poor/poverty_india_gray.jpg',my_img) cv2.destroyAllWindows()
import cv2 import numpy as np import matplotlib.pyplot as plt my_img = cv2.imread('C:/Users/TP/Desktop/poor/poverty_india.jpg',cv2.IMREAD_GRAYSCALE) cv2.imshow('image', my_img) cv2.waitKey(0) cv2.destoryAllWindows()
Output
![Poverty](https://www.tutorialspoint.com/assets/questions/media/13873/poverty.jpg)
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