Tag Archive: curve

Dec 18

Simple NURBS renderer [w/ code]

Screen Shot 2013-12-18 at 11.01.23 AM

Simple NURBS renderer, reading from a DXF

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May 26

Extending the hand tracker with snakes and optimizations [w/ code, OpenCV]

output-comp

Continuing the work on a hand curve particle filter following Heap&Hogg's work, adding active contours and optimizations

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Mar 16

Curve tracking with a Heap&Hogg's Particle Filters [w/ code, OpenCV]

Screen Shot 2013-03-15 at 6.18.30 PM

I wanna share some code for 2D curve tracking with a particle filter, implementing the body of work of Tony Heap and David Hogg. These guys presented a relatively easy to implement method for tracking deformable curves through space and change in form using a Hierarchical Point Distribution Models (HPDM), which is another elegant way …

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Jan 05

Shape manipulation with Moving Least Squares for curves [w/ code]

Shape manipulation with Moving Least Squares for 2D curves.

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Dec 27

2D curve matching in OpenCV [w/ code]

Matching 2D curves in OpenCV by analysis of curvature signatures, which makes the method robust to rigid transformation but also noise and heave occlusion.

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Dec 07

Resampling, Smoothing and Interest points of curves (via CSS) in OpenCV [w/ code]

Utility functions for Resampling, Smoothing and finding Interest points of 2D curves in OpenCV.

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Dec 28

Hand gesture recognition via model fitting in energy minimization w/OpenCV

Screen shot 2010-12-25 at 10.50.41 AM

Hi Just wanted to share a thing I made - a simple 2D hand pose estimator, using a skeleton model fitting. Basically there has been a crap load of work on hand pose estimation, but I was inspired by this ancient work. The problem is setting out to find a good solution, and everything is …

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Jun 06

Iterative Closest Point (ICP) for 2D curves with OpenCV [w/ code]

ICP

ICP - Iterative closest point, is a very trivial algorithm for matching object templates to noisy data. It's also super easy to program, so it's good material for a tutorial. The goal is to take a known set of points (usually defining a curve or object exterior) and register it, as good as possible, to …

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