000087159 001__ 87159
000087159 005__ 20190316233749.0
000087159 037__ $$aREP_WORK
000087159 245__ $$aUnequal Error Protection of Atomic Image Streams
000087159 269__ $$a2005
000087159 260__ $$c2005$$aEcublens
000087159 336__ $$aReports
000087159 520__ $$aThis paper presents an unequal error protection scheme for atomic image bitstreams. An atomic stream is the encoded version of a digital image, which is represented as a sum of bi-dimensional functions, as typically generated by Matching Pursuit encoders. The atomic structure of the compressed image presents an enormous advantage in terms of flexibility, since any atom of the stream can receive a different treatment, like a finely adapted protection against error. We take benefit from this property to propose a joint source and channel coding algorithm, that finely adapts the channel rate to the relative importance of the bitstream components. A fast search algorithm determines the distortion-optimal rate allocation for given bit budget and channel loss parameters. We further extend the algorithm to differentiated protection of region of interests. Simulation results show that the unequal error protection is quite efficient, even in very adverse conditions, and it clearly outperforms simple FEC schemes.
000087159 6531_ $$aLTS2
000087159 6531_ $$aLTS4
000087159 700__ $$0241061$$g101475$$aFrossard, P.
000087159 700__ $$aVandergheynst, P.$$g120906$$0240428
000087159 8564_ $$uhttps://infoscience.epfl.ch/record/87159/files/Frossard2005_1184.pdf$$zn/a$$s269779
000087159 909C0 $$xU10380$$0252392$$pLTS2
000087159 909C0 $$pLTS4$$xU10851$$0252393
000087159 909CO $$qGLOBAL_SET$$pSTI$$preport$$ooai:infoscience.tind.io:87159
000087159 937__ $$aEPFL-REPORT-87159
000087159 970__ $$aFrossard2005_1184/LTS
000087159 973__ $$sPUBLISHED$$aEPFL
000087159 980__ $$aREPORT