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14.3: Illumination Design of a Multi‐Touch Sensing Projection Screen for Augmented Virtual Environments
Author(s) -
Liu Sheng,
Hua Hong,
Gao Chunyu
Publication year - 2008
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.3069512
Subject(s) - projection (relational algebra) , computer science , computer vision , tracking (education) , contrast (vision) , computer graphics (images) , artificial intelligence , strips , line (geometry) , mathematics , psychology , pedagogy , geometry , algorithm
The paper presents the illumination engineering for a low‐cost multi‐touch projection screen. Eight near infrared emitting diode (IRED) strips with optimized line densities serve as the illumination sources for the finger tracking. The design achieves highly uniformed illumination, with an illumination efficiency of 55% and contrast of 0.098. Implementation and experimental results are presented.