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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 11, Iss. 20 — Oct. 6, 2003
  • pp: 2606–2618

Size and shape recognition using measurement statistics and random 3D reference structures

Arnab Sinha and David J. Brady  »View Author Affiliations

Optics Express, Vol. 11, Issue 20, pp. 2606-2618 (2003)

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Three dimensional (3D) reference structures segment source spaces based on whether particular source locations are visible or invisible to the sensor. A lensless 3D reference structure based imaging system measures projections of this source space on a sensor array. We derive and experimentally verify a model to predict the statistics of the measured projections for a simple 2D object. We show that the statistics of the measurement can yield an accurate estimate of the size of the object without ever forming a physical image. Further, we conjecture that the measured statistics can be used to determine the shape of 3D objects and present preliminary experimental measurements for 3D shape recognition.

© 2003 Optical Society of America

OCIS Codes
(100.5010) Image processing : Pattern recognition
(110.0110) Imaging systems : Imaging systems
(110.2990) Imaging systems : Image formation theory

ToC Category:
Research Papers

Original Manuscript: August 26, 2003
Revised Manuscript: September 29, 2003
Published: October 6, 2003

Arnab Sinha and David Brady, "Size and shape recognition using measurement statistics and random 3D reference structures," Opt. Express 11, 2606-2618 (2003)

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