Title :
Multiview image and video interpolation using weighted vector median filters
Author :
Fickel, Guilherme P. ; Jung, Claudio R. ; Lee, Bang-Wook
Author_Institution :
Inst. of Inf., Univ. Fed. do Rio Grande do Sul, Porto Alegre, Brazil
Abstract :
In Depth Image-Based Rendering (DIBR), interpolated views generated using one or two cameras usually present artifacts and holes due to occlusions and/or inconsistencies in the input disparity maps. In this paper we propose a multiple (3 or more) camera view interpolation technique that is able to combine redundant projections in a single interpolated view by using Weighted Vector Median Filters (WVMFs). By expressing the weights of the WVMF using both the distance from each reference view to the synthetic view and a measure of consonance of each projection to the others, we achieve a high quality view interpolation without holes and common visual artifacts, such as cracks and ghost effects. Additionally, we present an extension to multiview video sequences by imposing temporal coherence in the estimated disparity maps.
Keywords :
filtering theory; image sensors; image sequences; interpolation; median filters; rendering (computer graphics); video signal processing; DIBR; WVMF; consonance measurement; cracks; depth image-based rendering; ghost effects; input disparity maps; multiple camera view interpolation technique; multiview image interpolation; multiview video interpolation; multiview video sequences; redundant projections; reference view; synthetic view; temporal coherence; weighted vector median filters; Cameras; Coherence; Image color analysis; Interpolation; Measurement; Vectors; Visualization; Multiview; disparity estimation; temporal coherence; view interpolation;
Conference_Titel :
Image Processing (ICIP), 2014 IEEE International Conference on
Conference_Location :
Paris
DOI :
10.1109/ICIP.2014.7026090