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opencv calibration, must I use odd number of grid in each row/col?

Hi! I want to use OpenCV for camera calibration . 1) Someone told me that the grid number of each row/column should be ODD, is it right? Why I shouldn't use an even number of corners? 2) Which is...

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OpenCV cannot load images

Hi, I'm using the code from "https://help.ubuntu.com/community/OpenCV" in the C++ section, and I'm having trouble with the following code: #include "opencv2/core/core_c.h" #include...

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Which version of OpenCV for Python 2.7? Importing error/Installation

Hello, I followed these installation instructions very closely: http://opencvpython.blogspot.de/2012/05/install-opencv-in-windows-for-python.html The installation procedure is as follows (windows): 1....

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opencv_traincascade unhandeled exception

I am training a cascade classifier using opencv. I have 5 positive and 5 negative samples (this is for test on one image, if it will work i will use 500 good and 500 bag images). Their dimensions are...

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Result from Euc Distance Calculation

Hello, I'm calculating the euc line and the degree for 2 points. Most of the results are OK but sometimes there are results showed like this. -1.#IND,-1.#IND May I know what does this means? The...

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Best method to track multiple objects?

Hi everyone, I realize this questions is a pretty broad one but I was wondering what in your opinion is the best method to track multiple objects simulteaneously? My goal is to track 12 Objects...

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what are the steps to Install OpenCV-Python in Windows 7 32 bit

I am doing project on image processing wherein am required to implement image segmentation algorithms that recognize line,word & character of the user specified image strictly in Open CV-Python...

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Comparision of two images in java

Hi All, I am trying to compare two images in java using opencv, In which one image but not able to compare need your help

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Informative algorithms related to opencv

Based on the idea proposed in [Informative websites related to OpenCV](http://answers.opencv.org/question/69691/informative-websites-related-to-opencv/) by Sturkmen, I think that it would also be...

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One beautiful piece of jewelry offered by silver is earrings. It enhances the beauty of a lady, as it is light in weight and bright like stars. Silver is being used in lots of design and sizes like...

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Different output from GPU implementation of HOG

Hi, I have built two HOG SVM detectors for detecting people, which I have trained myself. One of them is GPU accelerated (using the OpenCV 2.4 gpu module), but other than that, the rest of the code is...

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How to recognize traffic sign when it is small in image sequence ?

Hi all, I am working on traffic sign recognition using template matching. I am able to find correct result when vehicle is near to traffic sign. But when it is away, means candidate is small in image,...

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Would subtracting the phases of two images be a superior difference metric...

I'm hoping someone can sanity check this idea as I am admittedly a bit of a noob when it comes to working with FFT's. Say I have two (registered) images of two of the same object and want to use one...

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Problems with traincascade

Yeah, I have also got many emails from people regarding the same stuff but till now I have not faced such issue. I have also developed an Haar Classifier using 3000+ positive images and 1500+ negative...

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OpenCV & MATLAB

Hello. Is there anyone who knows the release date of an opencv 3.x binary package where MATLAB bindings are already build on it? Thanks, RF

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