OpenCV and Numpy ImageRead

PixelInfo.py

#coding: utf-8

import cv2
import numpy as np

# readImage
img = cv2.imread('beatles_forsale.jpg')

print type(img)
pixelValue = img[10, 20]
print type(pixelValue)
print 'pixelValue = ' + str(pixelValue)

blue = img[10, 20, 0]
green = img[10, 20, 1]
red = img[10, 20, 2]

print type(blue)
print 'blue = ' + str(blue)
print 'green = ' + str(green)
print 'red = ' + str(red)

# Numpy array method

blue = img.item(10, 20, 0)
green = img.item(10, 20, 1)
red = img.item(10, 20, 2)

print type(blue)
print 'blue = ' + str(blue)
print 'green = ' + str(green)
print 'red = ' + str(red)

# Modify
img[10, 20, 0] = 100
print img[10, 20, 0]

Read Image In OpenCV and GetPixelValue By Numpy

simple access way to get pixel value by numpy method.