11-05-2011, 02:48 PM
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Abstract
Wouldn't it be great if we could somehow give visual commands to our computer without touching the keyboard or mouse? In this project, we propose an advanced laser gesture recognition application and use it to control several useful applications like PowerPoint Presentations, Media Players, etc. This is far more comfortable than using a remote control because you don't have to look for the correct buttons in the dark. All you have to do is make a few simple gestures anywhere in the camera's field of view with a laser pointer, and that's it! This program recognizes simple gestures made on a wall with a laser pointer such as left, right, up, down, two downward and two upward diagonals. Using advanced software techniques, user can even train the system to recognize new gestures and process actions accordingly.
Sample gestures that can be used in almost any application
Introduction
Group meetings and other non-desk situations require that people be able to interact at a distance from a display surface. This paper describes a technique using a laser pointer and a camera to accomplish just such interactions. Calibration techniques are given to synchronize the display and camera coordinates. A series of interactive techniques are described for navigation and entry of numbers, times, dates, text, enumerations and lists of items. The issues of hand jitter, detection error, slow sampling and latency are discussed in each of the interactive techniques.
A very interesting setting for interactive computing is in a meeting where the display is projected on the wall. Projection of the large image allows all participants sitting in their chairs to see the information under discussion. This provides a shared environment that can ground the discussion and provides an equal discussion point for everyone. However, if the information is interactive, only one of the participants has control of the changes. Interaction may occur through a computer in front of one of the participants whose screen image is being projected or it may occur through some on-the-board interaction device such as a Mimio pen. In such scenarios only one person is in control. It is possible for multiple people to interact at the board using pen-based tools, but it is generally not feasible for more than two unless a very large screen is used. There is also the problem that when people are at the board, the rest of the participants have a hard time seeing what they are doing. What is needed is an inexpensive mechanism for people to interact at a distance from a display surface.
Gesture Recognition
The use of gestures is a noteworthy alternative to cumbersome interface devices for human-computer interaction (HCI). In particular, visual recognition and interpretation of gestures provides the ease and naturalness desired for HCI.
Aim
• To develop a LASER tracking system using image processing, LASER pointer and webcam.
• Sample application interface or OS interface must also be built over basic scanner program.
• Generic applications like PowerPoint, Internet Explorer, and Media Player, etc. must be interfaced.