import cv2
import numpy as np
import matplotlib.pyplot as plt

img = cv2.imread('../../Assets/Images/aloeL.jpg', 1)
imgInfo = img.shape
height = imgInfo[0]
width = imgInfo[1]

count_b = np.zeros(256, np.float)
count_g = np.zeros(256, np.float)
count_r = np.zeros(256, np.float)

for i in range(0, height):
    for j in range(0, width):
        (b, g, r) = img[i, j]
        index_b = int(b)
        index_g = int(g)
        index_r = int(r)
        count_b[index_b] = count_b[index_b]+1
        count_g[index_g] = count_b[index_g]+1
        count_r[index_r] = count_r[index_r]+1

for i in range(0, 256):
    count_b[i] = count_b[i]/(height*width)
    count_g[i] = count_g[i]/(height*width)
    count_r[i] = count_r[i]/(height*width)

x = np.linspace(0, 255, 256)

y1 = count_b
plt.figure()
plt.bar(x, y1, 0.9, alpha=1, color='b')

y2 = count_g
plt.figure()
plt.bar(x, y2, 0.9, alpha=1, color='g')

y2 = count_r
plt.figure()
plt.bar(x, y2, 0.9, alpha=1, color='r')

plt.show()

#cv2.imshow('src', img)
cv2.waitKey(0)

import cv2
import numpy as np
import matplotlib.pyplot as plt

img = cv2.imread('../../Assets/Images/aloeL.jpg', 1)
imgInfo = img.shape
height = imgInfo[0]
width = imgInfo[1]

count_b = np.zeros(256, np.float)
count_g = np.zeros(256, np.float)
count_r = np.zeros(256, np.float)

for i in range(0, height):
    for j in range(0, width):
        (b, g, r) = img[i, j]
        index_b = int(b)
        index_g = int(g)
        index_r = int(r)
        count_b[index_b] = count_b[index_b]+1
        count_g[index_g] = count_b[index_g]+1
        count_r[index_r] = count_r[index_r]+1

for i in range(0, 256):
    count_b[i] = count_b[i]/(height*width)
    count_g[i] = count_g[i]/(height*width)
    count_r[i] = count_r[i]/(height*width)

x = np.linspace(0, 255, 256)

y1 = count_b
plt.figure()
plt.bar(x, y1, 0.9, alpha=1, color='b')

y2 = count_g
plt.figure()
plt.bar(x, y2, 0.9, alpha=1, color='g')

y2 = count_r
plt.figure()
plt.bar(x, y2, 0.9, alpha=1, color='r')

plt.show()

#cv2.imshow('src', img)
cv2.waitKey(0)

#cv2.imshow('src', img)