Structured light smart camera for spatial augmented reality applications

Matthew P. Ruffner, Ying Yu, Daniel L. Lau

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations


Structured Light Imaging (SLI) is a means of digital reconstruction, or Three-Dimensional (3D) scanning, and has uses that span many disciplines. A projector, camera and Personal Computer (PC) are required to perform such 3D scans. Slight variances in synchronization between these three devices can cause malfunctions in the process due to the limitations of PC graphics processors as real-time systems. Previous work used a Field Programmable Gate Array (FPGA) to both drive the projector and trigger the camera, eliminating these timing issues, but still needing an external camera. This work proposes the incorporation of the camera with the FPGA SLI controller by means of a custom printed circuit board (PCB) design. Featuring a high speed image sensor as well as High Definition Multimedia Interface (HDMI) input and output, this PCB enables the FPGA to perform SLI scans as well as pass through HDMI video to the projector for Spatial Augmented Reality (SAR) purposes. Minimizing ripple noise on the power supply by means of effective circuit design and PCB layout, creates a compact and cost effective machine vision sensing solution.

Original languageEnglish
Title of host publicationEmerging Digital Micromirror Device Based Systems and Applications XI
EditorsMichael R. Douglass, John Ehmke, Benjamin L. Lee
ISBN (Electronic)9781510625068
StatePublished - 2019
EventEmerging Digital Micromirror Device Based Systems and Applications XI 2019 - San Francisco, United States
Duration: Feb 5 2019Feb 6 2019

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceEmerging Digital Micromirror Device Based Systems and Applications XI 2019
Country/TerritoryUnited States
CitySan Francisco

Bibliographical note

Publisher Copyright:
© 2019 SPIE.


  • Image Sensor
  • Machine Vision
  • PCB Design
  • Spatial Augmented Reality

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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