Title :
Object wavelet transform for coding of arbitrarily shaped image segments
Author :
Katata, Hiroyuki ; Ito, Norio ; Aono, Tomoko ; Kusao, Hiroshi
Author_Institution :
Multimedia Bus. Dev. Center, Sharp Corp., Chiba, Japan
fDate :
2/1/1997 12:00:00 AM
Abstract :
Object-based coding is one of the most challenging key features which the ISO/IEC MPEG-4 is trying to standardize. One approach to transform an arbitrary shaped image region is addressed. The proposed approach called object-based wavelet transform (OWT), is simple to implement and is a smooth extension of regular wavelet transform (WT). The OWT consist of two phase processes: one is an extrapolation phase for regular WT and the other is a coefficients handling phase for eliminating redundancy caused by the extrapolation. Due to some experimental results, it is confirmed that the method performs the same as other shape-adaptive approaches with low complexity
Keywords :
ISO standards; code standards; extrapolation; image coding; image representation; image segmentation; standardisation; telecommunication standards; transform coding; wavelet transforms; ISO/IEC MPEG-4; arbitrarily shaped image segments; arbitrary shaped image region; coefficients; experimental results; extrapolation; image coding; low complexity; object wavelet transform; shape-adaptive approach; standardization; wavelet based object representation; Discrete cosine transforms; Extrapolation; Filtering; IEC standards; ISO standards; Image coding; Image segmentation; Indium tin oxide; Shape; Wavelet transforms;
Journal_Title :
Circuits and Systems for Video Technology, IEEE Transactions on
