Tag Archive: segmentation

Feb 05

Using Hidden Markov Models for staff line removal (in OMR) [w/code]

From left to right: Original binarized images, staff lines annotated by HMM,  staff lines removed.

So lately I'm into Optical Music Recognition (OMR), and a central part of that is doing staff line removal. That is when you get rid of the staff lines that obscure the musical symbols to make recognition much easier. There are a lot of ways to do it, but I'm going to share with you …

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Mar 05

Skin Detection with Probability Maps and Elliptical Boundaries [OpenCV, w/code]

Skind detection wit Skin Probabilty Maps and Elliptical Boundary Models, implementations in c++ with OpenCV

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May 05

Bust out your own graphcut based image segmentation with OpenCV [w/ code]

GMM clustering using only 100 pixels per cluster for training data

This is a tutorial on using Graph-Cuts and Gaussian-Mixture-Models for image segmentation with OpenCV in C++ environment. Been wokring on my masters thesis for a while now, and the path of my work came across image segmentation. Naturally I became interested in Max-Flow Graph Cuts algorithms, being the "hottest fish in the fish-market" right now …

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Dec 14

Extending Justin Talbot's GrabCut Impl [w/ code]

Justin Talbot has done a tremendous job implementing the GrabCut algorithm in C [link to paper, link to code]. I was missing though, the option to load ANY kind of file, not just PPMs and PGMs. So I tweaked the code a bit to receive a filename and determine how to load it: use the …

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