22 June 2001 Issues in multiview autostereoscopic image compression
Author Affiliations +
Abstract
Multi-view auto-stereoscopic images and image sequences require large amounts of space for storage and large bandwidth for transmission. High bandwidth can be tolerated for certain applications where the image source and display are close together but, for long distance or broadcast, compression of information is essential. We report on the results of our two- year investigation into multi-view image compression. We present results based on four techniques: differential pulse code modulation (DPCM), disparity estimation, three- dimensional discrete cosine transform (3D-DCT), and principal component analysis (PCA). Our work on DPCM investigated the best predictors to use for predicting a given pixel. Our results show that, for a given pixel, it is generally the nearby pixels within a view that provide better prediction than the corresponding pixel values in adjacent views. This led to investigations into disparity estimation. We use both correlation and least-square error measures to estimate disparity. Both perform equally well. Combining this with DPCM led to a novel method of encoding, which improved the compression ratios by a significant factor. The 3D-DCT has been shown to be a useful compression tool, with compression schemes based on ideas from the two-dimensional JPEG standard proving effective. An alternative to 3D-DCT is PCA. This has proved to be less effective than the other compression methods investigated.
© (2001) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Druti Shah, Druti Shah, Neil A. Dodgson, Neil A. Dodgson, } "Issues in multiview autostereoscopic image compression", Proc. SPIE 4297, Stereoscopic Displays and Virtual Reality Systems VIII, (22 June 2001); doi: 10.1117/12.430829; https://doi.org/10.1117/12.430829
PROCEEDINGS
10 PAGES


SHARE
RELATED CONTENT

New feature-based image adaptive vector-quantization coder
Proceedings of SPIE (December 07 1995)
A survey on lossy compression of DSC raw data
Proceedings of SPIE (March 02 2008)
Compression of stereo image pairs and streams
Proceedings of SPIE (April 14 1994)
Problems with lossy compression of stereo pairs
Proceedings of SPIE (June 29 1992)
A CAQ Bandwidth Reduction System For RPV Video Transmission
Proceedings of SPIE (October 29 1975)

Back to Top