Shadow touching for interactive projectors

Touching devices have become one of the major elements in today's most electronic devices. As the increasing demands of large touching area, the state-of-the-art touching approaches become costly and infeasible. Therefore, it is essential to design a new kind of touch techniques with high touch...

Full description

Saved in:
Bibliographic Details
Published in2013 IEEE International Conference on Acoustics, Speech and Signal Processing pp. 1798 - 1802
Main Authors Lan-Rong Dung, Guan-Ying Lai, Yin-Yi Wu
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.05.2013
Subjects
Cameras
Electromagnetics
Fingers
image processing
interactive system
Light sources
Lighting
Machine vision
object segmentation
Optical imaging
shadow detection
touching detection
Online AccessGet full text

Cover

More Information
Summary:Touching devices have become one of the major elements in today's most electronic devices. As the increasing demands of large touching area, the state-of-the-art touching approaches become costly and infeasible. Therefore, it is essential to design a new kind of touch techniques with high touching accuracy and scalability with touching panel size. The purpose of this paper is to provide a touch system that uses the distance between the object (finger or stylus) and its shadow to detect the touch-timing and position. It can be applied to an interactive projection system without using large amount of touch-detecting elements. The proposed touch system only requires a camera and an IR source with an interactive projector to detect the occurrence of touching and its location. The proposed system achieves an average detection rate of 97.53% when the error tolerance is 10 pixels.
ISSN:1520-6149
2379-190X
DOI:10.1109/ICASSP.2013.6637962