Three-dimensional mapping and range measurement by means of projected speckle patterns

Javier García, Zeev Zalevsky, Pascuala García-Martínez, Carlos Ferreira, Mina Teicher, Yevgeny Beiderman

Research output: Contribution to journalArticlepeer-review

44 Scopus citations


We present a novel approach for three-dimensional (3D) measurements that includes the projection of coherent light through ground glass. Such a projection generates random speckle patterns on the object or on the camera, depending if the configuration is transmissive or reflective. In both cases the spatially random patterns are seen by the sensor. Different spatially random patterns are generated at different planes. The patterns are highly random and not correlated. This low correlation between different patterns is used for both 3D mapping of objects and range finding.

Original languageEnglish
Pages (from-to)3032-3040
Number of pages9
JournalApplied Optics
Issue number16
StatePublished - 1 Jun 2008


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