Title :
Data compression for light-field rendering
Author :
Magnor, Marcus ; Girod, Bernd
Author_Institution :
Telecommun. Lab., Erlangen-Nurnberg Univ., Germany
fDate :
4/1/2000 12:00:00 AM
Abstract :
Two light-field compression schemes are presented. The codecs are compared with regard to compression efficiency and rendering performance. The first proposed coder is based on video-compression techniques that have been modified to code the four-dimensional light-field data structure efficiently. The second coder relies entirely on disparity-compensated image prediction, establishing a hierarchical structure among the light-field images. The coding performance of both schemes is evaluated using publicly available light fields of synthetic, as well as real-world, scenes. Compression ratios vary between 100:1 and 2000:1, depending on the reconstruction quality and light-field scene characteristics
Keywords :
discrete cosine transforms; image reconstruction; prediction theory; rendering (computer graphics); transform coding; vector quantisation; video codecs; video coding; DCT-coding; codecs; coding performance; compression efficiency; compression ratios; data compression; disparity-compensated image prediction; four-dimensional light-field data structure; hierarchical structure; light-field compression; light-field images; light-field rendering; light-field scene characteristics; real-world scenes; reconstruction quality; rendering performance; synthetic scenes; transform coding; vector quantization; video compression; Codecs; Computational modeling; Data compression; Image coding; Image reconstruction; Image segmentation; Layout; Lighting; Rendering (computer graphics); Two dimensional displays;
Journal_Title :
Circuits and Systems for Video Technology, IEEE Transactions on
