Title :
A low complexity wavelet based depth map encoder for low bit rate 3D video applications
Author :
Martínez-Rach, Miguel Onofre ; De Silva, Demuni ; Fernando, Anil ; Arachchi, Hemantha Kodikara ; Granado, Othoniel López ; Malumbres, Manuel
Author_Institution :
Univ. Miguel Hernandez, Elche, Spain
Abstract :
Depth maps, which aid the virtual view generation process in Depth Image Based Rendering (DIBR) applications in 3D video, are generally piecewise smooth images with sharp depth discontinuities. Compression artifacts that occur along the depth discontinuities often lead to poor quality of generated virtual views. In line with the importance of depth discontinuities towards view generation, we propose a non-uniform quantization method for wavelet based encoding of depth maps. Average rendering quality improvements of up to 0.8dB could be achieved.
Keywords :
quantisation (signal); rendering (computer graphics); smoothing methods; video coding; wavelet transforms; 3D video; compression artifacts; depth image based rendering; depth map encoder; non-uniform quantization method; piecewise smooth images; sharp depth discontinuities; virtual view generation process; wavelet based encoding; Conferences; Encoding; Image coding; Image edge detection; Quantization; Rendering (computer graphics); Three dimensional displays;
Conference_Titel :
Consumer Electronics (ICCE), 2012 IEEE International Conference on
Conference_Location :
Las Vegas, NV
Print_ISBN :
978-1-4577-0230-3
DOI :
10.1109/ICCE.2012.6161844