000117035 001__ 117035
000117035 005__ 20190316234127.0
000117035 037__ $$aCONF
000117035 245__ $$aShape from Texture for Omnidirectional Images
000117035 260__ $$c2008
000117035 269__ $$a2008
000117035 336__ $$aConference Papers
000117035 520__ $$aIn this paper, we describe a method to infer 3-D scene information using a single view captured by an omnidirectional camera. The proposed technique is inscribed in the so called ``Shape from Texture'' problem : if the textures hold by 3-D surfaces respect some a priori models, the deformation due to its projection in the image contains both local information about surface depth and orientation. To estimate this deformation, we adapt the work of Garding and Lindeberg to the case of spherical images processing. The planar multiscale procedure allowing the definition of precise texture descriptor is here replaced by a multiscale representation compatible with the compactness of the sphere. More precisely, the multiscale representation is obtained by filtering the data by dilated copies of a mother function. The spherical dilation introduced is the emph{gnomonic} dilation, a simple variation of the stereographic dilation due to Antoine and Vandergheynst. This dilation has a simple interpretation in terms of projective geometry. It fits precisely the transformation that the apparent omnidirectional image of an object follows when the distance of this object to the sensor changes. A spherical texture descriptor, close to a deformation tensor, is then defined thanks to the use of simple filters that act as smoothed differential operators on the data. Results are provided in the analysis of a synthetic example to illustrate the capacity of the proposed method.
000117035 6531_ $$aomnidirectional
000117035 6531_ $$asphere
000117035 6531_ $$amultiscale
000117035 6531_ $$a3-D
000117035 6531_ $$ashape
000117035 6531_ $$atexture
000117035 6531_ $$aLTS2
000117035 6531_ $$awavelet
000117035 6531_ $$asteerable
000117035 700__ $$0243987$$g182131$$aJacques, Laurent
000117035 700__ $$aDe Vito, Eugenio
000117035 700__ $$0242922$$g172333$$aBagnato, Luigi
000117035 700__ $$aVandergheynst, Pierre$$g120906$$0240428
000117035 7112_ $$dAugust 25-29, 2008$$cLausanne, Switzerland$$aEUSIPCO 2008
000117035 773__ $$tProc. EUSIPCO'08
000117035 8564_ $$uhttp://www.eusipco2008.org$$zURL
000117035 8564_ $$uhttps://infoscience.epfl.ch/record/117035/files/shape_from_texture.pdf$$zn/a$$s1755322
000117035 909C0 $$xU10380$$0252392$$pLTS2
000117035 909CO $$ooai:infoscience.tind.io:117035$$qGLOBAL_SET$$pconf$$pSTI
000117035 937__ $$aEPFL-CONF-117035
000117035 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000117035 980__ $$aCONF