Title :
Image-based compression, prioritized transmission and progressive rendering of circular light fields (CLFS) for ancient Chinese artifacts
Author :
Yao, X.Z. ; Chan, S.C. ; Zhu, Z.Y. ; Ng, K.T. ; Shum, H.Y.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. of Hong Kong, Hong Kong, China
Abstract :
This paper proposes an efficient algorithm for the compression, prioritized transmission and progressive rendering of circular light field (CLF) for ancient Chinese artifacts. It employs wavelet coder to achieve spatial scalability and divide the compressed data into a lower resolution base layer and an additional enhancement layer. The enhancement layer is coded as in JPEG2000 into packets where the base-layer is coded using disparity compensation prediction (DCP). The frame structure is designed to provide efficient access to the compressed data in order to support selective transmission and decoding. The depth and alpha maps are coded analogously. A prioritized transmission scheme which support interactive progressive rendering is also proposed to further reduce the latency and response time of rendering.
Keywords :
data compression; decoding; image coding; image enhancement; image resolution; rendering (computer graphics); wavelet transforms; JPEG2000; alpha maps; ancient Chinese artifacts; circular light fields; decoding; depth maps; disparity compensation prediction; image enhancement layer; image lower resolution base layer; image-based compression; interactive progressive rendering; prioritized transmission; selective transmission; spatial scalability; wavelet coder; Complexity theory; Decoding; Encoding; Image coding; Rendering (computer graphics); Three dimensional displays; Transform coding; Image-based rendering; circular light field; compression; prioritized transmission/rendering;
Conference_Titel :
Circuits and Systems (APCCAS), 2010 IEEE Asia Pacific Conference on
Conference_Location :
Kuala Lumpur
Print_ISBN :
978-1-4244-7454-7
DOI :
10.1109/APCCAS.2010.5774987
