Saturday, January 11th, 2014, 1 year ago

Review on the new book “Emgu CV Essentials”

emgucv essentials


This book is quite interesting in guiding starters from knowing-nothing to basic image processing. Also it is a good learning material for emgu cv based image processing.

In chapter 1, an introduction to emgu cv is given, along with the comparisons between the native openCV and other computer vision libraries. However, this part seems somehow over emphasised as the comparisons between the libraries cannot bring too much value to readers who want to learn emgu CV and how to use it in programmes. So, the advantages of emgu CV that are presented in forms of practical examples may give more benefits to readers.

Read On…

Monday, July 1st, 2013, 2 years ago

Undefined reference to ‘createDevice’ – Irrlicht engine compilation

irrlicht engine error createdevice

Extending openCV from pure 2D world to 3D environments seems challengeable – the first one is to find out the a 3D engine to support 3D rendering, based on the data gained from openCV. Irrlicht engine is seemed as a good option, as it provides good supports to 3D rendering with open source codes. However, compiling the engine for ubuntu & eclipse use is not an easy job. When I tried to run the first helloworld example, the problem popped up – Undefined reference to 'createDevice()'.

Read On…

Friday, June 28th, 2013, 2 years ago cannot open shared object file, and its solution




OpenCV 2.4.5 has released and it is exciting to take a bite.

So openCV is downloaded and compiled, but when it is to play video files, an error popped up: cannot open shared object file

Read On…

Wednesday, March 20th, 2013, 2 years ago

Considering video vibration helpful

teaser -

The video vibration is annoying, because as we know it, this causes big barriers to programmers from recognising objects/people accurately. However, the thing is, when the vibrations are amplified, i mean hugely amplified with a set of algorithms, there are amazing results happenning, as demonsted in this picture.

Read On…

Thursday, November 8th, 2012, 3 years ago

Release of HAAR classifier trained for hand gesture recognition

hand detection

The release of HAAR training classifier for hand gesture detection

This is the last post of the GSoC hand gesture detection series, and the trained HAAT classifier is finally released here.
This is only a short announcement, but the classifier in .xml file can be reached here in
The release contains two .xml classifier files, respectively they are for CLOSED PALM and FIST detection.

Hope this is useful.

Thursday, November 8th, 2012, 3 years ago

A method of detecting and recognising hand gestures using OpenCV (2)

hand detection opencv

A previous article has described a method to detect and recognise hand gestures using OpenCV, actually the c# wrapper of OpenCV called emgu CV. Details of this method can be found here a method of detecting and recognising hand gestures using Opencv. But Tongo’s project wrapped in emgu CV may not be easy to configure, so this article gives a new example transfering thet project to plain c++ OpenCV environment.

Read On…

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