OpenCV + Visual Studio 2008-程序在调试中运行良好，但在常规执行中访问冲突
[英]OpenCV+Visual Studio 2008 - Program runs fine in debug but access violation in regular execution
问题描述
I'm working on a computer vision program at the moment with OpenCV in C++. 
目前，我正在使用C ++中的OpenCV开发计算机视觉程序。 It seems to work 100% fine with a live feed from a webcam but when I tried to feed in a stream from an avi file it started crashing with an "Access Violation" error. 使用网络摄像头的实时供稿似乎可以100％正常工作，但是当我尝试从avi文件供稿时，它开始崩溃并出现“访问冲突”错误。 I can't see why this would be the case because the only difference between the two is the initial frame-grabbing- the image processing is the same afterwards. 我看不到为什么会这样，因为两者之间的唯一区别是初始抓帧-之后的图像处理是相同的。
I'm developing in VS2008. 我正在VS2008中进行开发。 The curious thing is that when I place a breakpoint in my main() and debug (F5) the program runs fine. 奇怪的是，当我在main（）中放置一个断点并调试（F5）时，程序运行正常。 However, when I Start Without Debugging (Ctrl+F5) I get the error. 但是，当我不调试而开始（Ctrl + F5）时，出现错误。
Has anybody encountered a similar problem or would anyone know why my program would appear to work fine when debugging but not in normal execution? 有没有人遇到过类似的问题，或者有人知道为什么我的程序在调试时似乎可以正常运行，但不能正常运行吗？
2 个解决方案
解决方案1
0 2011-04-13 16:34:35
Nothing specific about OpenCV, but the fact that it behaves differently with a different source stream, and in or out of the debugger, makes me think it is a timing issue. 关于OpenCV并没有什么特别的，但是它在不同的源流中以及在调试器中或调试器之外的行为不同，这一事实使我认为这是一个定时问题。 You could try attachng the debugger after the crash happens maybe. 您可以在崩溃发生后尝试附加调试器。
解决方案2
0 已采纳 2011-04-13 18:42:39
I would suspect uninitialized variables. 我会怀疑未初始化的变量。 Many debuggers initialize all variables, including those that are not. 许多调试器会初始化所有变量，包括未初始化的变量。
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