OpenCV：从文件夹中读取图像系列(OpenCV: Reading image series from a folder)

 我正尝试使用OpenCV的VideoCapture功能从文件夹读取一系列图像。 在互联网上进行一些搜索之后，我目前的代码是这样的： 
 
cv::VideoCapture cap ( "C:\\Users\\Admin\\Documents\\Images\\%02d.jpg");
 
 我期待看到VideoCapture函数应该读取该文件夹中的所有图像，其中包含两个连续数字的名称，如01.jpg, 02.jpg, ..., 30.jpg 。 有人在互联网上说，一旦我给出第一张图片的位置和名称， VideoCapture功能应该可以捕捉所有这些图像。 所以我也试图这样做： 
 
cv::VideoCapture cap ("C:\\Users\\Admin\\Documents\\Images\\01.jpg");
 
 但这仍然没有用，至少不是我的情况。 这些图像具有不同的大小，因此我将首先阅读它们，调整它们的大小，然后对它们进行进一步处理。 我怎样才能做到这一点？ 我正在使用Windows7和VisualStudio。 谢谢。 

I am trying to read a series of images from a folder using OpenCV's VideoCapture function. After some search on the internet, my current code is like this: 
 
cv::VideoCapture cap ( "C:\\Users\\Admin\\Documents\\Images\\%02d.jpg");
 
I was expecting to see that VideoCapture function should read all the images in that folder with names of two serial digits, like 01.jpg, 02.jpg, ..., 30.jpg. Someone told on the internet that the VideoCapture function should be ale to catch all of these images once I give the first image's location and name. So I also tried to do it like this:
 
cv::VideoCapture cap ("C:\\Users\\Admin\\Documents\\Images\\01.jpg");
 
But still this is not working, at least not for my case here. These images are of different sizes, so I am going to read them first, resize them, and then do further processing on each of them. How can I do this? I am using Windows7, with VisualStudio. Thank you. 

原文：https://stackoverflow.com/questions/16713258