Title :
An efficient hole filling for depth image based rendering
Author :
Cigla, C. ; Alatan, A. Aydin
Author_Institution :
ASELSAN Inc., Turkey
Abstract :
An efficient hole filling algorithm is presented providing texture compilation for invisible pixels during depth image based rendering (DIBR). Some pixels cannot be assigned to proper texture values due to occluding foreground object; thus, compilation is required to obtain visually pleasing virtual views from a set of reference views. The proposed algorithm exploits reliable texture transition from visible pixels to the holes among horizontal and vertical directions. Transition is performed by successive weighted summation (SWS) based on color and depth similarities between the neighboring pixels, producing adaptively weighted and connected aggregation. Depending on local depth variation, assignment of proper texture to the hole pixels is achieved by combining horizontal and vertical information. According to the experimental results, proposed approach yields visually pleasing compilation of occluded regions with drastically decreased number of operations per pixel.
Keywords :
image texture; rendering (computer graphics); DIBR; SWS; color similarity; depth image based rendering; depth similarity; foreground object occlusion; hole filling algorithm; horizontal information; invisible pixel texture compilation; local depth variation; reference views; successive weighted summation; texture transition; vertical information; virtual views; Abstracts; Channel estimation; Computational modeling; Filtering algorithms; Image resolution; Indexes; Permeability; Hole filling; depth prior; texture transition; weighted aggregation;
Conference_Titel :
Multimedia and Expo Workshops (ICMEW), 2013 IEEE International Conference on
Conference_Location :
San Jose, CA
DOI :
10.1109/ICMEW.2013.6618410