我想同时输出一个视频的时间轴并且输出在这一帧的图片均值
我想在输出一个视频的时间轴的同时输出在这一帧的图片均值,下面是提取视频时间轴的程序
import cv2 import numpy as np
cameraCapture = cv2.VideoCapture('test_1.avi')
success, frame = cameraCapture.read()
while success:
if cv2.waitKey(1) == 27:
break
cv2.imshow('Test camera', frame)
success, frame = cameraCapture.read()
milliseconds = cameraCapture.get(cv2.CAP_PROP_POS_MSEC)
seconds = milliseconds//1000
milliseconds = milliseconds%1000
minutes = 0
hours = 0
if seconds >= 60:
minutes = seconds//60
seconds = seconds % 60
if minutes >= 60:
hours = minutes//60
minutes = minutes % 60
print(int(hours), int(minutes), int(seconds), int(milliseconds),a)
cv2.destroyAllWindows()
cameraCapture.release()
目前是有想用到mean函数来判断在这一帧里的图片的均值,比如
image = imread(path_str, 1); cvtColor(image, gray, CV_RGB2GRAY);
Mat mat_mean, mat_stddev;
meanStdDev(gray, mat_mean, mat_stddev);
double a = mat_mean.at<double>(0, 0);
double d = mat_stddev.at<double>(0, 0);
cout << a << endl;
cout << d << endl;
但是不太清楚如何将这一段转化为python的程序,image就是之前时间轴中的frame,那么Mat mat_mean函数在这里表达的是什么意思呢?如果想把这一段改写成python语句的话需要怎么修改呢?
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