图像直方图 python

最新推荐文章于 2023-08-18 11:56:58 发布

原创最新推荐文章于 2023-08-18 11:56:58 发布 · 1.5k 阅读

1 ·

CC 4.0 BY-SA版权

文章标签：

#python #opencv #计算机视觉

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

FileName = r"D:\cycFeng\Data\2021-11-30\02Guass.mp4"
cap = cv2.VideoCapture(FileName)  # 原视频位置
while (True):
    ret, frame = cap.read()
    if not ret: #or count >= EndNum:
        print('not res , not image')
        break
    gray = cv2.cvtColor(frame,cv2.COLOR_RGB2GRAY)
  
    index = len(np.where(gray == 255)[0])
    print(index)
    
    img2 = cv2.resize(frame, (int(w / 2), int(h / 2)))
    cv2.imshow('a',img2)
    cv2.waitKey(1)
    
    # 直方图
    plt.hist(gray.flatten() , 256)
    plt.show()
    plt.close('all')
  
cap.release()