Patent ID: 8265375
Filing Date: 2012-09-11
Classification: G01B,G06T

Abstract:
1. An imaging apparatus, said imaging apparatus comprising: at least one source of coherent radiation outputting a plurality of wavelengths illuminating an object creating a plurality of speckle patterns each corresponding to the plurality of wavelengths; at least one sensor at a location relative to said object to determine a speckle pattern intensity for each of the plurality of wavelengths; a processor receiving information from at least one sensor, said processor having means for constructing at least one autocorrelation of said object from said intensities of said speckle pattern; a first portion of said coherent radiation passing through a curved surface; a second portion of said coherent radiation being reflected by said curved surface creating a reference point; said reference point is a virtual spot of focused coherent radiation producing a copy in said autocorrelation; said virtual spot of focused coherent radiation is located behind the curved surface; and said processor further comprising means for executing a regional image selection technique to construct a representation of said object utilizing said reference point and said autocorrelation.