Image Processing & Computer Vision with OpenCV

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Read my articles below and learn new things on Image Processing and Computer Vision programming with OpenCV. Got questions? Get the answers!

Template Matching with OpenCV

Nov 4, 2008 | Tags: OpenCV | 39 comments

Template matching is a technique for finding small parts of an image which match a template image. Download this example on how to perform template matching with OpenCV. Read more

Display Video from Webcam

Nov 4, 2008 | Tags: OpenCV | 41 comments

If you have a webcam attached to your computer, you can display video stream using OpenCV easily. Here's the basic code. Read more

FFTW with OpenCV

Nov 4, 2008 | Tags: OpenCV | 11 comments

Using FFTW to perform FFT operation in OpenCV is a good choice. This is an example on how to use FFTW with OpenCV. It simply loads an image, compute FFT & IFFT, then display the final result. The resulted image has no difference with the original, as it should. Read more

FFT with FFTW Example

Nov 4, 2008 | Tags: OpenCV | 10 comments

FFTW is a collection of C routines for computing DFTs. It's very fast and freely available at http://www.fftw.org. Here's an example on how to compute the DFT of an array with FFTW and inverse the result back. Read more

OpenCV Eye Tracking

Nov 2, 2008 | Tags: OpenCV | 23 comments

A simple program that displays live video from a webcam and tracks user's eye. The system tracks user's eye with a given template, which was manually selected using mouse. Read more

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