KCF and BOOSTING tracker segfaults in Python
Hi, I installed opencv 3.1.0-dev on Ubuntu 14.04, compiled with OPENCV_EXTRA_MODULES_PATH set to opencv_contrib. I can successfully run opencv_contrib/modules/tracking/samples/tracker.py with MIL,...
View ArticleWhat is the correct way of using the cv2.correctMatches in Python
I am trying to pass the corresponding image coordinates to the function and throws an error. cv2.error: D:\OpenCV_3\opencv_8-18-16\modules\calib3d\src\triangulate.cpp:202: error: (-209) The...
View ArticleCan not compile: Found OpenCV Windows Pack but it has no binaries compatible,...
I'm new to opencv. I followed the installation [instruction](http://docs.opencv.org/2.4/doc/tutorials/introduction/linux_install/linux_install.html#linux-installation) for LINUX . I chose to install...
View ArticleInstall openCV on Mac OS Sierra
Hi All, Currently I'm installing the openCV on my computer, and it report an error like this: -- Configuring done -- Generating done -- Build files have been written to:...
View Articlenumber recognition using multi layer perceptron
Hi all ! I think I am more than close to finish my project which is a sudoku grabber After using tesseract, I realised that it was to slow and not enough accurate so I try an other solution I try to...
View ArticleSBM / StereoBM with multiple camera's
**TL;DR;** Is it possible to run SBM or anything like it with more than 2 camera's? Since I have 5 or 6 camera's laying around (all Logitech C270) I was wondering if it was possible to use multiple...
View Articlehow to build custom opencv for android (and test application using c++ client...
Hello. How can I build opencv myself on android such that I can write other native c++ application code that interacts with it? Im using Android studio 2.2 with ndk installed. Most...
View ArticlePointer to image producing different results
I'm doing the following: image = image.clone(); // ensure continuous memory double *im = (double *) calloc(image.total() *image.elemSize(), sizeof (double)); im = (double *)image.data; What I thought...
View ArticleRunning Clandmark webcam example
Hi I installed clandmark on Ubuntu , now I want to run the facial landmark detection using web cam . What is the procedure to run the code ? Thanks for help
View ArticleCreate libopencv_java.so from source
Hi I've downloaded openCV source code and follow http://code.opencv.org/projects/opencv/wiki/Building_OpenCV4Android_from_trunk (OpenCV build section) to build for Android. after running make -j8 I see...
View ArticleloadOCRHMMClassifierNM knn classifiers Training
loadOCRHMMClassifierNM permit to load the default character classifier when creating an OCRHMMDecoder, the default classifier is OCRHMM_knn_model_data.xml, but there is a way to training my own...
View ArticleDetecting 3D Object's position using a Drone
How to detect objects on the ground from a drone. The camera in not placed facing the ground, it has been placed at 45-degree angle. I also need to get the objects position (x,y,z) with reference to...
View Article8 digit Alpha numeric detection from video frame
Dear Friends, I have a video file and I processed it through cv2.VideoCapture and analyzing frames in loop to detect 8 digit Alpha numeric from the frame. I used handwriting detection script but it...
View ArticleError undefined variable "cv" - Matlab
System information (version) OpenCV => 2.4.13 Operating System / Platform => Windows 10 64-Bit Compiler => Visual Studio 2012 Detailed description I am trying to run a Matlab code using some...
View ArticleH264 with VideoWriter (Windows)
Hi there, I'm trying to find a way to export frames with VideoWriter in H.264 format (or anything equally good). However I can't seem to find a way to do it. I've downloaded some different codecs that...
View ArticleClone Gaussian Filter of Photoshop
I tried Gaussian Blur of OpenCV. But it shows different result from Photoshop. For example, I was asked to input radius in Photoshop. So I typed 25. And by using OpenCV, I coded as follows. cv::Mat...
View Articleunderstanding the letter recognition sample of OpenCV
Hi all, I try to understand the letter recognition sample of OpenCV and i'm stuck on this [line](https://github.com/opencv/opencv/blob/master/samples/cpp/letter_recog.cpp#L389) int cls_label =...
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View ArticleHow to get different blocks from the borders in image using OpenCV
I am using OpenCV with C++. I have the following image  I want to replicate the cell structure in this image into an excel sheet.I...
View ArticleDrawing conclusions about cascade quality during training
I am wondering if someone could help me draw some conclusions about the quality of my HAAR cascades using the output of opencv_transcascade as they are being generated. The reason being a) I'm curious,...
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