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

TitleSize and shape recognition using measurement statistics and random 3D reference structures
Publication TypeJournal Article
Year of Publication2003
AuthorsA Sinha, and DJ Brady
JournalOptics Express
Volume11
Start Page2606
Issue20
Pagination2606 - 2618
Date Published01/2003
Abstract

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.

Short TitleOptics Express