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Questions tagged [opencv3.2]

Use this tag only for questions that are specific to version 3.2 of OpenCV, for general questions use the [opencv] tag.

OpenCV is an open source computer vision library

Version 3.2 released in December 2016, a year after 3.1 release, 969 patches have been merged and 478 issues (bugs & feature requests) have been closed.

Its documentation can be found here.

Github: https://github.com/opencv/opencv/releases/tag/3.2.0

Changes: https://github.com/opencv/opencv/wiki/ChangeLog

For more information, see .

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after press button which perform image processing my App get Crshed

I am creating an app which capture image & show in imageview. after that, I perform features extraction using ORB & matching. but when I click on the next button my app gets crashed. D/AndroidRuntime: Shutting down VM E/AndroidRuntime: FATAL…
Akshay Kumar
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Is there a way to use cv2.approxPolyDP to approximate open curve?

I would like to approximate smooth lines with chain of line segments. cv2.approxPolyDP in OpenCV 3.4 made a good result in the case of closed curve. Origin close curve: Approximated close curve: But in the case of open curve, cv2.approxPolyDP did…
vividmoon
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output differences when using findContours in opencv2 and opencv3

I am using the exact same steps to find the contours of an image but I am getting two different results in Opencv 2.4.8 and Opencv 3.2! Anybody knows why? Here is the procedure: std::vector > contours; …
Samer
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Train and test bag of visual word using VGG descriptors in OpenCV

I had a code which is getting ORB keypoints and descriptors of images and then it trains a bag of word using "BOWKMeansTrainer". the purpose of this code is to cluster photos using k-means. I don't have any problem using ORB. Here is my problem: I…
Rojin
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OpenCV Aborted (core dumped) When the Window Is Closed

I try to read a camera frame and show it through cv::namedWindow using cv::cuda::GpuMat. Here is my C++ code: cv::namedWindow("frame", cv::WINDOW_OPENGL); cv::resizeWindow("frame", FRAME_WIDTH, FRAME_HEIGHT); while (true) { cv::Mat frame; …
ghchoi
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Bent object detection

I have image of ribs in a factory and some of them can be bent. For each rib I have binary mask of it - here you can see masked image of all ribs at once. Masked ribs illustration: If it helps you, here are all ribs masks connected to one. Rib…
google2
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OpenCV 3.02 + text module + Tesseract 3.05 runtime error: Tesseract not found

I correctly installed OpenCV 3.2 using cmake to generate it from source code as in this link, installed Tesseract 3.05 and leptonica from here. Both work correctly on these sample example RedEyeRemover for OpenCV and opencv-tesseract for testing…
SarahData
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OpenCV 3.2 Make Error

OpenCV => 3.2 Operating System / Platform => Ubuntu 64 bit Compiler => make Detailed description I am having some trouble installing OpenCV 3.2. I followed the example given on Milq's github:…
lostInEncryption
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OpenCv and Visual C++ Face detection

I am currently trying to write a face detection program and i seem to have a slight problem with it even though it is able to build successfully. Any ideas on how to solve this? Below indicates the error that appears when i debug and my…
james
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npy_common.h NPY_INTERNAL_BUILD is not defined

I am trying to install Opencv 3.2.0 on Ubuntu 16.04 with Python 2.7 bindings. The Fabric script works perfectly when I install Opencv 3.1.0 in this way, but when I try 3.2.0 I receive the following error: [ 83%] Building CXX object…
Jacob
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OpenCV 3.2.0-dev - 3.2.0 version missing RTrees, unable to find dev version

OpenCV 3.2.0 seems does not have RTrees library. But internet is full of examples of cv2.RTrees. I thought maybe be the issue of versions mismatching - maybe version is wrong ? Should it be 3.2.0-dev ? But on Fedora 24 i cant seem to find this…
Laimonas Sutkus
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Python OpenCV 3.2 imshow() no image content with waitKey(0)!

I installed OpenCV3.2 + python3.6.1 from this installation guide. (For the paths needed in guide I typed: Edit: I'm not sure, but I guess that I should install opencv under 3.6, not 3.6.1, please don't use my paths for your…
Kindred
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Opencv 3.2 read mpeg files too slow

I am going through the book Learning OpenCV 3 and test out the video example 2.3. I could edit, compile and run it, but the problem is that it closed down immediately. // DisplayPicture.cpp : Defines the entry point for the console…
User1953
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Compiling OpenCV 3.2 on Linux Mint 20.2 / Ubuntu 20.04

I'm trying to compile OpenCV 3.2 in my Mint 20.2 machine. I've been trying for several weeks now and had no success. I keep running into some breaks or crashes during compilation. I've already tried enabling/disabling a few flags that at first…
Romi_GM
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OpenCV 3.2 Installed but unable to use it. load version 4.0 everytime

I have problem that it's struggling me. I use python (anaconda) for some codes. I'm currently doing the tutorials from openCV. I create envs everytime I need to install new packages. These are the steps that I am doing: create a new environment…
Andres Mitre
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