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Document Type : Latin Dissertation
Language of Document : English
Record Number : 150158
Doc. No : ET21950
Main Entry : Gaurav Garg
Title Proper : EFFICIENTLY ACQUIRING REKECTANCE FIELDS USING PATTERNED ILLUMINATION
Note : This document is digital این مدرک بصورت الکترونیکی می باشد
Abstract : The use of the reflectance fields of real world objects to render realistic looking images israpidly increasing. The reflectance field describes the transport of light between the lightincident on an object and the light exitant from it. This has numerous applications in areasthat include entertainment, cultural heritage, digital libraries and space exploration. Thecentral problem with this approach is the lack of fast methods to acquire the reflectancefield data. This dissertation addresses this problem and describes a system for acquiringthe reflectance field of real world objects that performs many orders of magnitude fasterthan the previous approaches.The system models the 8D reflectance field as a transport matrix between the 4D in-cident light field and the 4D exitant light field. It is a challenging task to measure thismatrix because of its large size. However, in some cases the matrix is sparse, e.g. in sceneswith little or no inter-reflections. To measure such matrices, this thesis describes a hierar-chical technique called dual photography which exploits this sparseness to parallelize theacquisition process. This technique, however, performs poorly for scenes with significantdiffuse inter-reflections because in such.,..tested for theQ1 PC1 bus cardBoth these projects mere sofixare des elopment efforts tonards contributing to dlfferentaspects of Roboucs and lZ1echatronics projects m the Controls and Roboucs Group..
Subject : Electericl tess
: برق
electronic file name : TL45144.pdf
Title and statement of responsibility and : EFFICIENTLY ACQUIRING REKECTANCE FIELDS USING PATTERNED ILLUMINATION [Thesis]
 
 
 
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