Saturday, March 17th, 2012, 6 years ago

Using hand gestures to control mouse pointer in c sharp


Why mapping hand gestures to system mouse pointer controls?

Hand gesture recognition, including hand gestures and movements, is becoming increasingly attractive. Many people are currently working on it to achieve natural interaction. One important step between hand gesture recognition and natural-interaction applications is to map detected hand gestures to system mouse pointer control. In one of previous articles here.

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Thursday, January 26th, 2012, 6 years ago

“Silverlight.CSharp.targets was not found” problem

vs2010 error

When I was building up a new silverlight project based on existing silverlight 3d template, I met a problem that said ‘error  : Unable to read the project file ‘OverlappingTabs.cspro … C:\Program Files\MSBuild\Microsoft\Silverlight\v4.0\Microsoft.Silverlight.CSharp.targets” was not found. Confirm that the path in the declaration is correct, and that the file exists on disk.’

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Saturday, January 21st, 2012, 6 years ago

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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Thursday, January 19th, 2012, 6 years ago

The error of ‘VIDIOC_QUERYMENU: Invalid argument’

Screenshot-C-C++ - rgbwebcam-src-rgbwebcam.cpp - Eclipse SDK

When I was writing a simple example of OpenCV below, an repeating error happened as ‘VIDIOC_QUERYMENU:Invalid argument’.

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Wednesday, January 18th, 2012, 6 years ago

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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Monday, January 16th, 2012, 6 years ago

Unknown error: ‘One or more of the following nodes could not be enumerated:’

Screenshot-cw418@hud-desktop: ~-Documents-OpenNI-

ERROR – ‘One or more of the following nodes could not be enumerated:’

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Saturday, January 14th, 2012, 6 years ago

HIGHGUI ERROR: V4L: index 0 is not correct

Screenshot-cw418@hud-desktop: ~-workspace-readwebcam-src

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 simplest openCV camera view example, and the error said that – ‘HIGHGUI ERROR: V4L: index 0 is not correct‘ – but nothing of openCV configurations were changed at all!

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Friday, January 13th, 2012, 6 years ago

Capturing images from webcams using openCV in Ubuntu 11.04

opencv 2.3.1-video-capture-image

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 –

Installing openCV in Ubuntu with pandaboard part 1
Installing openCV in Ubuntu with pandaboard part 2
Installing openCV in Ubuntu with pandaboard part 3 – the network proxy
Installing openCV in Ubuntu with pandaboard part 4 – compiling openCV 2.3.1
Installing openCV in Ubuntu with pandaboard part 5 – running openCV 2.3.1 examples, and
Tutorial: A Comprehensive Guide to Installing and Configuring OpenCV 2.3.1 on Ubuntu

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Wednesday, January 11th, 2012, 6 years ago

Fixing ‘[libavutil/] Error 1’ in ffmpeg make for openCV 2.3.1 install

Screenshot-cw418@hud-desktop: ~-Documents-OpenCV-2.3.1-build-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 error – ‘[libavutil/] Error 1‘ and the solution.

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