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2013-08-17 15:31:32 -0600 | received badge | ● Scholar (source) |
2013-08-17 15:30:10 -0600 | commented question | SimpleBlobDetector bug? That was it! The solution was generated by CMake so I didn't think to check the libs (but obviously I the CMake file setup incorrectly). Thank you. (If you want, post this as an answer, I can mark it as accepted so you can get the Karma). |
2013-08-16 18:31:41 -0600 | answered a question | Traffic Jam Detection If you do simple frame differencing between frame you should get a basic idea of how much movement you have. If they are not moving or moving very slowly you will have a lot less change than if they are moving quickly. If you need something more sophisticated you can use optic flow to estimate the movement in the image. |
2013-08-16 18:24:17 -0600 | received badge | ● Editor (source) |
2013-08-16 18:23:47 -0600 | asked a question | SimpleBlobDetector bug? I am using SimpleBlobDetector from OpenCV 2.45 (32-bit) with VS 2010 under windows 7. When I compile and run my code in VS's debug configuration everything works fine. When I compile and run my code in VS's release configuration the call to detect crashes with the following error: Here is the relevant code: and then and boom. The call to detect crashes (only . Any ideas or suggestions (beyond always compiling with debug)? Thanks in advance! |
2013-07-22 16:54:58 -0600 | commented question | cv::threshold crash That did it! Converting everything to CV_32F fixed the problem. Is this an OpenCV bug or did I miss something in the documentation that says you need to yous 32F? (If you want some Karma, answer the question and I'll accept it). |
2013-07-22 16:46:09 -0600 | commented question | cv::threshold crash Yes. The input image is CV_16UC1. All the other Mats are just created as cv::Mat background; cv::Mat foreground; cv::Mat difference; cv::Mat thresh; In the header. I assume this uses the default constructor. I'll try to explicitly set their size and types and see if that makes a difference. |
2013-07-22 15:57:29 -0600 | commented question | cv::threshold crash Why? The src was origionaly 16UC1 and I scale down the color space. What is wrong woth that? Like I said, I call I show on the other images and they look fine. Then threshold crashed. |
2013-07-22 14:52:46 -0600 | asked a question | cv::threshold crash I hope I'm doing something idiotic and there is a simple fix for this but, every time I try to take a threshold on an image it crashes. I'm trying to do simple background subtraction and then take a threshold on the resultant image (to later use as a mask). Here is the relevant code: src, background,difference, and thresh are all created as cv::Mat In the header. The code crashes on the last like when I try the call to cv::theshold. I can call imshow on src, background, and difference and they all look reasonable. I'm using OpenCV 2.4.5 under c++ using VS2010. Any help or suggestions would be appreciated. |