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Using webcams/motion sensing cameras in OMAP-based pandaboard
What webcams/motion sensing cameras are available for OMAP4 platforms? As the Ubuntu 11.04 Natty has been successfully installed in the pandaboard, the next step of development work is to plug in...
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A review of people counting using openCV part 1
Why using openCV for people counting? There are alternatives to count people in a public place, for example using microcontrollers and lasers and arduino to design a cool and accurate system to count...
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Installing openCV in Ubuntu with pandaboard part 1
OpenCV at ubuntu with pandaboard At the first beginning of post, I would like to remind a tiny, but sometimes may huge, problem in installing openCV at ubuntu with pandaboard – the network proxy...
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Installing openCV in Ubuntu with pandaboard part 2
How to install openCV in Ubuntu without networks In the last post of installing openCV in Ubuntu with pandaboard, the failure of software update of openCV was discussed. But if there was no...
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Installing openCV in Ubuntu with pandaboard part 3 – the network proxy
The problem of networking proxy in ubuntu for openCV installation In the last post instsalling openCV in Ubuntu with pandaboard a networking proxy problem was raised. The problem is relevant to...
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Installing openCV in Ubuntu with pandaboard part 4 – compiling openCV 2.3.1
Before the compiling I was about to write a post about compiling the newest openCV 2.3.1 in Ubuntu with pandaboard, but because of the proxy network problem in Ubuntu software update and the right...
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Installing openCV in Ubuntu with pandaboard part 5 – running openCV 2.3.1...
The last tutorial about installing opencv in ubuntu with pandaboard 4 – compiling the opencv 2.3.1 did not complete the final compile steps, this post aims to complete that. Continue the compiling of...
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Fixing ‘ QMainWindow: No such file or directory’ in v4l installation with Ubuntu
Thanks to the comprehensive troubleshooting guide to opencv installation posted by Osman, some install errors could be referred and fixed. But some errors are not included in that guide, as the chance...
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Fixing ‘[libavutil/libavutil.so.51] Error 1′ in ffmpeg make for openCV 2.3.1...
This post describes an error and its solution in ffmpeg make for openCV install. It is based on Osman’s comprehensive troubleshooting of openCV 2.3.1 installing and configuring, but adds an additional...
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Capturing images from webcams using openCV in Ubuntu 11.04
This is a simple example of capturing live images from webcams using the new installed OpenCV 2.3.1 in the Ubuntu. The relevant information of OpenCV 2.3.1 install can see my previous posts –...
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HIGHGUI ERROR: V4L: index 0 is not correct
When I moved the openCV development platform from the home to the office, a wired thing happened – the programme that I debugged smoothly in the home did not work at all in the office – even the...
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Ubuntu 11.04, ASUS Xtion pro, ARM and OpenNI
This is a brief summary of the work that has been done previously, including the ubuntu 11.04 install, Xtion depth camera setting, openCV 2.3.1 installing, and the final openNI install and configure....
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The error of ‘VIDIOC_QUERYMENU: Invalid argument’
When I was writing a simple example of OpenCV below, an repeating error happened as ‘VIDIOC_QUERYMENU:Invalid argument’. Is this because the Qt for drawing the output of openCV? The code The code that...
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Breaking Asus Xtion pro into parts
This post demonstrates the breaking down of xtion pro into parts. For more pictures reading the whole post.
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A new hand gesture recognition -related project launched
A new project launching of hand gesture recognition in gstreamer – as the proposal to developing a gstreamer plugin for accurate hand gesture recognition in multimedia streams has been accepted...
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Needed!!! High quality positive/negative hand pictures needed!!!
Give me your hands!!! As a new hand gesture recognition project is launched recently, there is a strong need to collect a big number of good quality hand pictures – it is a pity I have only two hands....
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A failed example of hand gesture recognition using openCV haartraining...
This example aimed to provide a good classifier that was able to recognise a flat contract palm in videos, but the results, as demonstrated in the haar performance evaluation, turned out quite...
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The colour range for HSV skin extraction
The question raised about hsv colour values Several days ago I got an email from a developer who asked why there were differences in the hsv threshold values between my example and the theoretical...
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Hand gesture detection and recognition using openCV 2
Before the example – why haar classifiers for hand gesture detection As mentioned in one of early articles such like hand gesture detection and recognition using openCV, there are two main ways to...
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Analysis of openCV’s face detection – the sample, method and performance
From the picture of face detection in openCV website… This post is the first of series articles discussing openCV HAAR classifier training and use, as it was implemented in GSoc 2012 project. Here in...
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