000115399 001__ 115399
000115399 005__ 20190316234116.0
000115399 02470 $$2ISI$$a000265921401072
000115399 037__ $$aCONF
000115399 245__ $$aGeometry-based distributed coding of multi-view omnidirectional images
000115399 260__ $$c2008
000115399 269__ $$a2008
000115399 336__ $$aConference Papers
000115399 520__ $$aThis paper presents a distributed and occlusion-robust coding scheme for multi-view omnidirectional images, which relies on the geometry of the 3D scene. The Wyner-Ziv coder uses a multi-view correlation model that relates 3D features in different images using local geometric transforms in order to perform coset code design and the coset decoding of each feature. The meaningful image features are extracted by a sparse decomposition over a dictionary of localized geometric atoms. However, in such a decomposition, occlusions or low-correlated features appear as independent elements in the encoded stream, which can lead to erroneous reconstruction at the decoder. To ameliorate this problem, we propose to leave a controlled redundancy by sending additional syndrome bits that are computed by channel coding across the atoms of the Wyner-Ziv image. This offers resiliency against occlusions, or against inaccuracy in the view correlation model. The experimental results demonstrate the coding performance of the proposed scheme at low bit rate, where it performs close to the joint encoding strategy.
000115399 6531_ $$a3D scene
000115399 6531_ $$asparse approximations
000115399 6531_ $$aDSC
000115399 6531_ $$aLTS4
000115399 700__ $$0240452$$g163024$$aTosic, Ivana
000115399 700__ $$aFrossard, Pascal$$g101475$$0241061
000115399 7112_ $$dOctober 11-15, 2008$$cSan Diego$$aICIP
000115399 773__ $$tIEEE ICIP 2008
000115399 8564_ $$zURL
000115399 8564_ $$uhttps://infoscience.epfl.ch/record/115399/files/TFIcip08final.pdf$$zn/a$$s406409
000115399 909C0 $$xU10851$$0252393$$pLTS4
000115399 909CO $$qGLOBAL_SET$$pconf$$ooai:infoscience.tind.io:115399$$pSTI
000115399 937__ $$aEPFL-CONF-115399
000115399 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000115399 980__ $$aCONF