Solved ! Documentation bug report page doesn't work
I found a bug in OpenCV documentation. Then I clicked report bug link what preferred link for the bug report in documentation(http://code.opencv.org/) but I have this error: ![image...
View ArticleUsing SVM with HOGDescriptor
I have a .yml file that was created using this (https://docs.opencv.org/3.3.1/d5/d77/train_HOG_8cpp-example.html) c++ program with positive and negative images. How do I use the .yml file with my...
View ArticleHow to import cv2 in python3 in ubuntu 17.10 after installing opencv 3.4.0?
**ujjwal@ujjwal-HP-245-G5-Notebook-PC**:~$ python Python 3.6.3 |Anaconda custom (64-bit)| (default, Oct 13 2017, 12:02:49) [GCC 7.2.0] on linux Type "help", "copyright", "credits" or "license" for...
View ArticleOpenCV and Neural Network / AI Accelerators for Mobile Devices
Hello all, I'm trying to understand if we can expect any performance improvements (as in speed of inference / processing) in projects using OpenCV in mobile platforms that have or will have the...
View ArticleStereoRectify ROI Results
Hi I could not get always valid roi from stereo rectify. Results that I got is below Valid ROI "0" "31" "1269" "912" "0" "0" "0" "0" Errors: Cam Left "0.234922" Cam Right "0.246169" Reprojection Error...
View ArticleHuman body extraction with haar cascades from static background (opencv.js)
I have used "moving foreground from static background with colors" (opencv.js) method for extracting human bodies in a video stream. When it comes to detect moving bodies this algorithm work well but...
View ArticleWhy can't Eclipse find my library files
Eclipse is looking for the library files in the actual system mingW64 installation rather than the Mingw install as described above: Path expected: `C:\opencv_src\opencv-3.4.0\Mingw_build\install` Path...
View ArticleUnable to load custom Tensorflow model based on rfcn_resnet101_coco
I used `rfcn_resnet101_coco` as a base to fine tune my model in tensorflow. However when I load this into OpenCV I get the following error: ``` OpenCV Error: Unspecified error (Unknown layer type Cast...
View ArticleHow to approach to parallelization of algorithms?
I want to parallelize algorithm (object tracker). How should I approach to this topic? Is this only changing namespace and syntax to gpu or is this more demanding activity?
View ArticleShould OpenCVConfig.cmake be part of dev debian package?
Hi, I am building my own OpenCV debian packages and when I want to create the dev one, I see OpenCVConfig.cmake file is added to the package. I would think that the dev package only contains header...
View ArticleHow to do Unit Test in OpenCv?
I'm new to OpenCV. I have introduced a new API in *VideoCapture Class*. To do **Unit Testing** for that API. Can you please explain how to write test cases for that API in the Opencv? Steps to write...
View ArticleHi, I want to build opencv 3.4 with the extra module for java application , i...
mingw32-make[2]: *** [modules\java\jar\CMakeFiles\opencv_java_jar.dir\build.make:61 CmakeFiles/dephelper/opencv_java_jar] Error 1 mingw32-make[1]: *** [CMakeFiles\Makefile2:8181:...
View Articleopencv3.3.0 with TBB, libtbb-dev installed, but build fails
After my 5th attempt and unable to progress any further, I now call on you all. I'm on Ubuntu 16.04, trying to build opencv3.3.0 with its corresponding contrib modules; `libtbb-dev` is installed...
View ArticleHow do you build OpenCV with LAPACK on Windows 10 via CMake?
Hello, I've been having trouble getting CMake to cooperate when telling it to build with LAPACK on **Windows 10**. I've tried downloading the prebuilt files from [LAPACK for...
View ArticleDifferences between Gray to YUV conversion (CvtColor VS Create a Mat with Y...
AFAIK , A YUV image from Gray8 image is just copy the Gray8 image data to the Y-component. Meaning that the crominances are 0 value. Based on this...
View ArticleHow to import Tensorflow's MobileNet into Opencv dnn?
Hi, I'm retraining Mobilenet using tensorflow's retrain.py script with following command: python tensorflow/examples/image_retraining/retrain.py \ --image_dir ~/trainingData/ \ --learning_rate=0.001 \...
View ArticleEXC_BAD_ACCESS (heap buffer overflow) when using .at function
hi all i am using OpenCV 3.4.0 with C++ on Mac OS X. I am trying to access a matrice on a Mat instance like the following: cv::Mat overlay2 = cv::imread(getAssetsPath() + "overlay.png"); for (int i =...
View ArticleK-Means Clustering C++ how do I save each cluster separately in Matrix form
I want to save each cluster seperately and display each cluster. I find Clusters and tags in my code(C++). How can I get what I want to do next?
View ArticleK-Nearest for handwritten letters
I'm working with this data set, which Is slightly unbalanced across the letter classes: [link text](https://github.com/tuptaker/uppercase_letters) I've tried to adapt the examples described in this...
View Article