DLP technology application: 3D head tracking and motion correction in medical brain imaging

Oline Vinter Olesen, Jakob Wilm, Rasmus Reinhold Paulsen, Liselotte Højgaard, Rasmus Larsen

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Abstract

In this paper we present a novel sensing system, robust Near-infrared Structured Light Scanning (NIRSL) for three-dimensional human model scanning application. Human model scanning due to its nature of various hair and dress appearance and body motion has long been a challenging task. Previous structured light scanning methods typically emitted visible coded light patterns onto static and opaque objects to establish correspondence between a projector and a camera for triangulation. In the success of these methods rely on scanning objects with proper reflective surface for visible light, such as plaster, light colored cloth. Whereas for human model scanning application, conventional methods suffer from low signal to noise ratio caused by low contrast of visible light over the human body. The proposed robust NIRSL, as implemented with the near infrared light, is capable of recovering those dark surfaces, such as hair, dark jeans and black shoes under visible illumination. Moreover, successful structured light scan relies on the assumption that the subject is static during scanning. Due to the nature of body motion, it is very time sensitive to keep this assumption in the case of human model scan. The proposed sensing system, by utilizing the new near-infrared capable high speed LightCrafter DLP projector, is robust to motion, provides accurate and high resolution three-dimensional point cloud, making our system more efficient and robust for human model reconstruction. Experimental results demonstrate that our system is effective and efficient to scan real human models with various dark hair, jeans and shoes, robust to human body motion and produces accurate and high resolution 3D point cloud.
Original languageEnglish
Article number897904
JournalProceedings of SPIE, the International Society for Optical Engineering
Volume8979
Number of pages11
ISSN0277-786X
DOIs
Publication statusPublished - 2014
EventSPIE Photonics West : Emerging Digital Micromirror Device Based Systems and Applications VI - San Francisco, California, United States
Duration: 1 Feb 20146 Feb 2014

Conference

ConferenceSPIE Photonics West : Emerging Digital Micromirror Device Based Systems and Applications VI
CountryUnited States
CitySan Francisco, California
Period01/02/201406/02/2014

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