python : 여러 사진 파일의 RGB 평균 구하기

https://intrepidgeeks.com/tutorial/python-automatically-calculates-the-rgb-average-of-the-image-data-set

python 은 이미지 데이터 세트 의 RGB 평균 값 을 자동 으로 계산 합 니 다.

'''
qhy
2018.12.3
'''
import os
import numpy as np
import cv2


ims_path = './photo/sorted_by_data/2022-04-05/'  #

ims_list = os.listdir(ims_path)
R_means = []
G_means = []
B_means = []
for im_list in ims_list:
    print(ims_list)
    im = cv2.imread(ims_path + im_list)
    # extrect value of diffient channel
    im_R = im[:, :, 0]
    im_G = im[:, :, 1]
    im_B = im[:, :, 2]
    # count mean for every channel
    im_R_mean = np.mean(im_R)
    im_G_mean = np.mean(im_G)
    im_B_mean = np.mean(im_B)
    # save single mean value to a set of means
    R_means.append(im_R_mean)
    G_means.append(im_G_mean)
    B_means.append(im_B_mean)
    print("mean",im_list,im_R_mean,im_G_mean,im_B_mean)
    # three sets  into a large set
    a = [R_means, G_means, B_means]
    mean = [0, 0, 0]
    # count the sum of different channel means
    mean[0] = np.mean(a[0])
    mean[1] = np.mean(a[1])
    mean[2] = np.mean(a[2])

print( "",mean[0],mean[1],mean[2])

나는 폴더별로 해야하니까 ...

다음이시간에