Some insights on iris localisation - getting a better accuracy.
I have been trying to port some p[ython code on github for iris recognition to OpenCV](https://github.com/pctroll/computer-vision/tree/master/iris_recognition) for the past few days. I have been...
View Articleerror in runing source face detection in opencv 2.4.9 and vs 2012
i use pre-build opencv 2.4.9 i test the image show in opencv 2.4.9 it works,but for this source its have error?! if this errors is that i use pre-build opencv?what to do what not to do copy the xml...
View ArticleUsing strided external array as cv::Mat
I have an array in memory that represents a matrix. However, I have a stride value for both rows and individual elements. That is, the step from one element in a row to the next is *NOT* the size...
View ArticleROI non rectangular
Hello to all. you can create a non-rectangular ROI? Type an 'area made by hand? thank you all
View ArticleAlgorithms for eye gaze (eye-direction) in OPENCV
Hi all, I need to implement algorithm for ***eye gaze*** to know the ***direction of eye using opencv ,*** i have been struggling for one month to do it using viola-jones algorithm with training...
View ArticleOpenCV dev forum moving completely to Github
Just wondering after I saw http://code.opencv.org/projects/opencv/activity if we are going to completely transfer error handling through github? If so, we should adapt all the existing tutorials on how...
View Articleload/save SVM custom kernel
Hi, I am trying to train a SVM on some feauture using a custom kernel with opencv. Everything is ok for the training part: I extract the feature, train the SVM, save the results to a file with...
View ArticleIs there any maximum size for SVM input vectors?
Hello everyone, I'm facing some trouble while training an SVM and I'm wondering if it has to do with the size of each of the input vectors. As usually, I'm computing some descriptors to be passed into...
View ArticleHow do i connect opencv in eclipse?(android)
I am planning to create a mood meter in eclipse using OpenCv, but where do I actually start? How do I connect opencv to eclipse? I'm really confuse by now.. Any help or suggestion?
View ArticleError building OpenCV 3.0.0 with FFMPEG
Hello, This is my first question on this forum. I have been using OpenCV for a while. However I have recently changed my system to a cluster where I do not have any admin permission. The problem is...
View ArticleUsing minAreaRect with contour in Python
I'm attempting to use OpenCV to identify and extract a fairly obvious region from an image. So far, by using a threshold and a series of dilations and erosions, I can successfully find the contour for...
View ArticleStrange crashes during deallocation of std::vector (VS2015, Windows 7)
Hey all, I'm running OpenCV 2.4.11 on Windows 7, compiling with Visual Studio 2015. I've found that during several function calls (to `Stitcher::Stich` and `cv::findContours`, for example), there is a...
View ArticlesetWindowTitle() linux/OSX creates new window
Hi, So when I try: setWindowTitle(oldName,newName); a new window gets created instead of updating the title of current window. Any idea why ? I am basically trying to update the title of the window...
View Articlechange color of of window title
Hi, Can the color of the title bar be made different (of a window displaying an image) from the default setting. Thanks
View ArticleError when capture RTSP IP Camera using OpenCV 2.10 and Visual Studio 2008
Hi ! I am newbie in openCV. I made a program to access IP Camera that support RTSP protocol using OpenCV 2.10 and Visual Studio 2008. I made this program using Win32 Application. When I debug my...
View Articleexclude moving objects in camera frame
I have some LEDs which are blinking at a frequency half the frame rate of camera. Which means ideally in one frame LED is on and in another frame the LED is off. I need to find the positions of LED...
View ArticleAndroid Studio OpenCV VideoCapture Error signal 11 (SIGSEGV) during setup
'm following an online tutorial on the basics of setting up OpenCV. I am getting the error: Fatal signal 11 (SIGSEGV) at 0x00000000 (code=1), thread 1740 (Thread-16446). Using a series of log...
View ArticleSave floating point TIFF images
Hi team, I work with a team that uses MATLAB for image analysis. They trade floating point TIFF files for analysis. I am working through the simple read/write tutorials but am frustrated by the fact...
View ArticleRotate Landmarks
Hello. I have various files with 2D coordinates describing faces of people. In OpenCV I'm using the circle function to draw each of these coordinates in a black background (Mat::zeros), so: ![image...
View ArticleHow to do a mask or how to transform found contours to filled circles?
How to transform all the contours found in a frame to a filled circle? Let me explain, my video has many small objects, and it is hard to detect using Mosse tracking, because my objects change its...
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