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Questions tagged [opencv3.1]

Use this tag only for questions that are specific to version 3.1 of OpenCV, for general questions use the [opencv] tag.

OpenCV is an open source computer vision library

Version 3.1 released in December 2015. Its documentation can be found here.

For more information, see .

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Is surf descriptor extractor still available in opencv3.1?

Does anybody know if surfdescriptorextractor is still available in opencv 3.1? if it is how may i use it can you direct me? Thanks in advance
dramaticlook
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Compiling OpenCV with Visual Studio Community 2015

I have previously given up on installing OpenCV on my Windows 7 PC but now it has come back to haunt me, this time I'm trying to build its libraries using Visual Studio Community 2015. I have tried finding a decent procedure on how to install it but…
Rowen Chumacera
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Save Videos OpenCV(python) - save several videos

can i save several videos, or each time i run the program the saved video is replaced? because every time I run the program, the previously saved video is replaced by the new one for example. after write the video out = cv2.VideoWriter('video.avi',…
FRango SStYle
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Opencv python Add transperent Image on other image

I want to add a transparent image like a cloth on human body part. I have done the part like where to put that cloth. I calculated the points also but the main part is how to place the transparent image on my human body image. Anybody knows simple…
Chintun Violet
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OpenCV face detection error on Visual Studio 2017

I've just installed Visual Studio (2017 Community) and OpenCV (3.4.1 win pack) , and I'm working with C++. So I just attempted to copy one of the sample codes of OpenCV from its source folder, but I faced this error: Then I tried reinstalling the…
mitrafrz
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OCR and coordinate association on image for each character

I'm working on a project to help my visually impaired friend, a python script will first take a screenshot every second and whatever is on the image will be converted to text, and the character which is nearest to the coordinate of curser, will be…
Tanishq Jaiswal
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imshow() in OpenCV doesn't work for cv::Mat type CV_32F?

I have a float array float* data; // stores pixel gray color cv::Mat img(h,w,CV_32F,data); cv::namedWindow("Display window"); cv::imshow( "Display window", img ); Then what I get is : I searched for many resources but couldnt find out. I doubt…
Billadsf
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Is there a way to enhance this circle in order to detect it?

So I have this circle, which is very thin: How could I enhance this, to then detect it? I tried various HoughCircles for detection, but none return any circles. For an answer, language does not matter. I'll find out how to convert it to python…
sliders_alpha
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OpenCV 3.1.0 - LNK1104 with opencv_world310d.lib (Visual Studio Express 2013)

iam actually trying to get opencv running on my Computer. I allready configured the environment variables on Windows and added the Path for the includes and the libraries in a propertiesheet. Now when i want to add additional dependencies i watched…
Dome A.
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Webcam using Visual Studio 2015

I have VS-15 with OpenCV-3.1. On the output window I get a solid gray blank display. How do I solve it? #include int main() { cvNamedWindow("Webcam Stream", CV_WINDOW_AUTOSIZE); CvCapture* capture =…
Uttaran
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