Improved Scanning Methods for Wavelet Coefficients Of Video Signals

this paper. Section 2 states the analysis of statistical properties of the wavelet transformed image sequence, which is the basis of this paper. In Section 3, different scanning patterns are presented for the block based approach based on the statistical analyses of Section 2. Scanning algorithms to reduce bit rates are also considered; simple scanning, zonal scanning and conditional scanning. In Section 4, scanning algorithms for the subband based approach are proposed, and the effect of a block-wise non-linear filter removing isolated non-zero coefficients in high frequencies is investigated. Section 5 presents simulation results, and Section 6 concludes this pape