000087305 001__ 87305
000087305 005__ 20190316233752.0
000087305 0247_ $$2doi$$a10.1109/TCSVT.2006.883502
000087305 02470 $$2DAR$$a9757
000087305 02470 $$2ISI$$a000242551300003
000087305 037__ $$aARTICLE
000087305 245__ $$aProgressive Coding of 3-D Objects Based on Overcomplete Decompositions
000087305 269__ $$a2006
000087305 260__ $$c2006
000087305 336__ $$aJournal Articles
000087305 520__ $$aThis paper presents a progressive coding scheme for 3-D objects, based on overcomplete signal expansions on the 2-D sphere. Due to increased freedom in the basis construction, redundant expansions have shown interesting approximation properties in the decomposition of signals with multidimensional singularities organized along embedded submanifolds. We propose to map simple 3-D models on 2-D spheres and then to decompose the signal over a redundant dictionary of oriented and anisotropic atoms living on the sphere. The signal expansion is computed iteratively with a matching pursuit algorithm, which greedily selects the most prominent components of the 3-D model. The decomposition therefore inherently represents a progressive stream of atoms, which is advantageously used in the design of scalable representations. An encoder is proposed that compresses the stream of atoms by adaptive coefficient quantization and entropy coding of atom indexes. Experimental results show that the novel coding strategy outperforms state-of-the-art progressive coders in terms of distortion, mostly at low bit rates. Furthermore, since the dictionary is built on structured atoms, the proposed representation simultaneously offers an increased flexibility for easy stream manipulations. We finally illustrate that advantage in the design of a view-dependent transmission scheme.
000087305 6531_ $$aLTS2
000087305 6531_ $$aLTS4
000087305 6531_ $$aMatching pursuit
000087305 6531_ $$aprogressive coding
000087305 6531_ $$ascalable
000087305 6531_ $$acoding
000087305 6531_ $$asparse approximations
000087305 6531_ $$a3-D model compression
000087305 6531_ $$a3-D
000087305 6531_ $$arepresentation and coding.
000087305 6531_ $$aLTS4
000087305 700__ $$0240452$$g163024$$aTosic, I.
000087305 700__ $$0241061$$g101475$$aFrossard, P.
000087305 700__ $$aVandergheynst, P.$$g120906$$0240428
000087305 773__ $$j16$$tIEEE Transactions on Circuits and Systems for Video Technology$$k11$$q1338-1349
000087305 8564_ $$uhttps://infoscience.epfl.ch/record/87305/files/3dsmpPub.pdf$$zn/a$$s1044867
000087305 909C0 $$xU10380$$0252392$$pLTS2
000087305 909C0 $$pLTS4$$xU10851$$0252393
000087305 909CO $$qGLOBAL_SET$$pSTI$$particle$$ooai:infoscience.tind.io:87305
000087305 937__ $$aEPFL-ARTICLE-87305
000087305 970__ $$aTosic2005_1381/LTS
000087305 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000087305 980__ $$aARTICLE