geometric models for lane detection and tracking
Hi, I have searched geometric models (e.g.: straight line, circular arc, polinomals, splines etc.) to make some assumptions about the road’s structure. After I define model, I will fit the extracted...
View Articleabi checks
it's currently almost impossible, to remove redundant [methods](https://github.com/Itseez/opencv/pull/6620) or [cruft like this](http://docs.opencv.org/master/dc/d0d/classcv_1_1WImage.html) from...
View ArticleHow can I compile the evaluation.cpp in opencv?
[`evaluation.cpp`][1] contains an useful function for computing a detector through `evaluateFeatureDetector` and even `computeRecallPrecisionCurve`. **Any useful alternative to compute these metrics...
View ArticleTutorial for open cv integration in Android Studio
I want to use open cv in my project. I am using Android Studio for buiding my project. But all tutorials of open cv that I found uses eclipse as there build environment. Also I want to know that those...
View ArticleIs it possible to get a labeled image from a binary image using OpenCV with...
I am aware of the function connectedComponents in OpenCV library which can give me labeled image from a binary image. Since i want to write my code purely in C and without any wrappers, is it possible...
View ArticleNeural Networks UPDATE_WEIGHTS does not work
Hi, I'm trying to develop a neural network, where my weights are trained on-line, i.e. training algorithms should be called more times, and each time the net should keep learning starting from the...
View ArticleDecision tree example for android application
I want to develop a new system of classification based on decision tree for an android application. The openCV library provides cvDTree class, but I didn' know how to use it. There are any basic...
View ArticleHow to use Mikolajczyk evaluation for detectors/descriptors?
I want to compare different detectors/descriptors (**both binaries and not**) for my application and I want to use the [Mikolajczyk evaluation framework][1], which is became a standard in the...
View ArticleLinux video capture does not work cam3 or Image capture in cam1 fails.
Dear All Dunno if it is right forum to ask. I am trying to some solution or run time fix on this Problem: After connecting 3rd camera, Linux video capture does not work cam3 or Image capture in cam1...
View Articleproblem adaptiveThreshold
hi i have a problem with adaptiveThreshold, i have this error: OpenCV Error: Assertion failed (src.type() == CV_8UC1) in adaptiveThreshold, file...
View ArticleOpenCV4Android conversion from MatOfKeyPoint to MatOfPoint2f
I am trying to use OpenCV for Android (OpenCV 2.4.3) I am writing a program to track keypoints. I am trying to use FeatureDetector to detect keypoints and then Video.calcOpticalFlowPyrLK to track them....
View ArticleParallel Lines - Draw shortest connection line
Hello, I am currently facing a problem in one of my projects, I have 2 parallel lines, each defined by 2 QPoints and I want to draw the line and get the Points of the line that is the shortest and...
View Articleopencv_traincascade.exe crashes while at NEG current samples
My goal is to train a cascade to recognize a certain face of the dice. I have 106 non-generated samples converted into a vec file (named `dice1.vec`) by opencv_createsamples, with the params `-w 32...
View ArticleBackgroundSubtractorMOG2 errors in java
I'm using BackgroundSubtractorMOG2 bmog=org.opencv.video.Video.createBackgroundSubtractorMOG2(100, 30, false) in my java code for detecting movements in a video. Though it shows the movements i get the...
View ArticleOpenCV 3.1 Build for multiple virtual machines
If I build openc 3.1 on Ubuntu 14.04 with default jdk do I have to build it again to use on another virtual machine if the OS version is the same?
View ArticleProblem to set Visual Studio for OpenCV
I have followed the OpenCV guides for installation in Windows and setting of Visual Studio but I have problem if I understood all step correctly. The folder structure is different. My system is Windows...
View ArticleWhere are OpenCV 3.1 VC10 Windows x86 binaries?
I read the guide how to install the OpenCV but it is old and totaly confusing. In the files which I have extracted I cannot find any x86 dll for OpenCV, but some folders for 64 bit system and VC 12 and...
View ArticleHow to save a video in mp4 format
Currently I am saving my video using VideoWriter oVideoWriter0(/home/MyVideo0.mp4", CV_FOURCC('M','P','4','2'), 20, frameSize); But when I run the code (in C++) I am getting error message as [mp4 @...
View Articleimport OpenCV inside UNITY3D
HI! Please, does anybody know how can I use the OpenCV functions inside my Unity projects? Thank you all!!!!
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