A DISTRIBUTEDCODING-BASEDCONTENT-AWAREMULTI-VIEWVIDEOSYSTEM

suchasystem isthecoding engine that compresses themultiComparedto traditionalmono-viewsystems,stereooview video dataintoarate-distortion efficient andcontentCompared totraditional mono-view systems, stereo oringeneral multi-view systems provide interesting additional infor-awarerepresentation. mation aboutacaptured scene, whichcansignificantly fa- Inthis paper, wepropose anefficient, flexible andcontentcilitate content extraction. Thisproperty makesthemvery awarecoding framework foramulti-view video system. This useful formanyemerging applications, suchas3DTV and framework consists ofacentral processor andakeycamvideosurveillance. However, theuseofsuchsystems has era,completed withaflexible numberofsmart Wyner-Ziv beenlimited sofarbecause oftheprocessing timeandband- (WZ)cameras that provide acontent-aware video represenwidth requirements formulti-view data. Thesemajordraw- tation oftheir viewpoint. Inorder toobtain aflexible and backs canonlyberelieved bythedevelopment ofdedicatedenergy-efficient system, thevideo signals ofthekeyandWZ algorithms. Inthis paper, wepresent anefficient, flexible and cameras areencoded independently ofeachother. Highcodcontent-aware coding method foramulti-view video system.ingefficiency isachieved byapplying Distributed Video(DV) Theframework consists ofacentral processor andcamera,coding principles. completed byaflexible numberofsmart Wyner-Ziv cameras. Content-awareness isafirst objective ofoursystem. Itis Thelatter onesprovide acontent-aware representation oftheiranimportant issue, since inapplications suchassurveillance, viewpoint, thusgreatly reducing theamountofdatatobe notthequality ofthewholevideo isimportant butespecially sent tothecentral processor. Byemploying Distributed Video thequality ofspecific regions intheframes. Inthis work, we (DV)coding, i.e. joint decoding oftheindependently encoded assume that theparts oftheframes that correspond toobjects frames ofthedifferent cameras, weachieve goodcoding effi-inmotion contain morecritical information thanthestill reciency without inter-camera communication. gions. Inthefollowing, thesetofpixels inaframethat move IndexTerms-Distributed videocoding, Wyner-Ziv withrespect tothebackground will becalled theRegion Of coding, multi-view, stereo, content-aware, region ofinterest. Interest (ROI) oftheframe. Then, thecoding algorithms used