Questions tagged as 'opencv'

Tagged questions
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Adjust Image Range using Python

I am a beginner in python, but I have experience with other programming languages. I need to do some college work, but I do not know how to proceed. I would like to know how to adjust the range of an image using python, I downloaded some image p...
asked by 03.12.2017 / 13:46
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How to transform a cv :: Mat into ipcMatrixipcRGB?

Does anyone know if there is an easy way to turn a cv::Mat into ipcMatrix<ipcRGB> ?     
asked by 25.11.2014 / 21:25
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Is it possible to access the accumulator of the hough transform using opencv?

I have this little problem, I searched a lot on the internet and in the documentation but I did not find anything related, I need to know the accumulation value of each circle generated by the function, for example: circle of center (x, y) radiu...
asked by 17.11.2014 / 02:13
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Opencv: How to import automatic lib

Good morning, I'm starting to program with OpenCV in C ++ with MinGW, but I'm having difficulty with lib files. Every time I need to compile a program, I need to put, for example, -llibopencv_videoio330 . I would like to know if there is a...
asked by 08.09.2017 / 15:57
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Grayscale in Images - OPENCV

Good afternoon, folks, I have a .bmp image and I want to turn it to grayscale (0-255) through Opencv with C ++ (I do not want to save this grayscale image). From here, I want to go through the image doing the following: For each pixel, if...
asked by 16.06.2016 / 20:17
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How to install OPENCV in PHP on a WAMP server?

I need the OPENCV image processing function in PHP, but I'm having trouble installing on windows .. how to proceed?     
asked by 19.05.2016 / 04:39
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JAVACV with maven?

I've done the JAVACV clone link I'm trying to run the project build: clean install But when I run I encounter the following error: Exception in thread "main" java.lang.NoClassDefFoundError: com/google/common/base/Strings at org.s...
asked by 27.07.2016 / 17:51
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AccessViolationException - Attempt to read or write to protected memory

I'm working with OPENCVSHARP (OpenCV) to access a Ps3Eye camera in C #. But I'm having a serious protected memory problem! I use visual studio 2010 in Windows7. Code:IntPtr_ptr;publicIntPtr_ptrBmpPixels;staticIntPtr_camera;staticintw=0...
asked by 16.06.2014 / 16:55
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Implement a blink counter on haar cascade face detection

How do I display the amount of blinks of people currently detected. The code below detects against haar cascade, where it displays a face counter. from __future__ import print_function #importa a funcao da biblioteca future import cv2 cap =...
asked by 04.06.2018 / 19:35
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How to extract the face of an RG document from a scanned image

Hello, Personal I'm developing a solution where I use Google Cloud Vision to analyze texts in the image, this is already ready in my solution. Managing the image and Google Vision returns the found words and their coordinates. What I need...
asked by 22.11.2017 / 19:07