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| from PIL import Image
import numpy as np
import matplotlib.pyplot as plt
import os
directory = "/home/admin01/Images/test/"
for root, dirs, files in os.walk(directory):
for file in files:
mon_image = Image.open(directory + file)
hist = [] # ou hist = list()
largeur,hauteur = mon_image.size
for i in range(256):
hist.append(0)
for ligne in range(hauteur):
for colonne in range(largeur):
p = mon_image.getpixel((colonne,ligne))
n_gris = int((p[0]+p[1]+p[2])/3)
hist[n_gris] = hist[n_gris]+1
print(hist[n_gris])
n_abscisses = np.linspace(0,255,256)
n_ordonnees = np.array(hist)
plt.figure()
plt.xlim(0,255)
plt.plot(n_abscisses,n_ordonnees)
plt.grid(True)
plt.title('Densité de couleur de %s' %file)
plt.savefig('/home/admin01/Images/histo/%s' %file)
#plt.show()
hist = [] |
