Basic HTML version of Foils prepared 23 February 97

Foil 5 Wavelet compression (5)

From Theory and Practice of Wavelet compression Rome Lab Quarterly Review for CIV -- June 28 96. by Czeslaw Jedrzejek, Tomasz Major *

1 Investigation of various video compression technologies: H.263, H263+, L and MPEG-4
2 Wavelet compression of binary terrain data for VRML applications
  • current methods allow only 5:1 compression due to lettering
  • solution: binary image estimation in separate color spaces, binary image extraction, difference encoding
3 Available implementation
  • Intel's Indeo Video 4.1 employs partly wavelet-based motion estimation and compensation technologies, QSIF (160x120)
  • Horizons Technology Power!Video, Intel's competition
  • Summus, Ltd (Irmo, SC) - several platforms, no video yet
  • VDOLive by VDOnet - wavelet based video codec, QSIF, gray scale, delivery over 28.8 Kbps
4 Our focus: decoding, wavelet player
  • video server with scalable wavelet compressor
  • motion estimation and prediction techniques needed to satisfy real time, low bandwidth and quality requirements

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