Wavelet image coding using the spherical representation
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Dosyalar
Tarih
2005
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
IEEE
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this paper, we introduce the "spherical representation", which provides a new adaptive framework for modeling and coding the image information in wavelet subbands. Based on this representation, a practical coding algorithm is developed. This coder uses local energy as a direct measure to differentiate between parts of the wavelet subband and to decide how to allocate the available bitrate. As local energy becomes available at finer resolutions, i.e. in smaller size windows, the coder automatically updates its decisions about how to spend the bitrate. We use a hierarchical set of variables to specify and code the local energy up to the highest resolution, i.e. the energy of individual wavelet coefficients. The overall scheme is nonredundant, meaning that the subband information is conveyed using this equivalent set of variables without the need for any side parameters. Despite its simplicity, the algorithm produces PSNR results that are competitive with the state-of-art coders in literature.
Açıklama
Anahtar Kelimeler
Set, Bit rate, Compression algorithms, Energy measurement, Energy resolution, Image coding, Image representation, PSNR, Power engineering and energy, Wavelet coefficients, Wavelet domain, Image information, Individual wavelet coefficients, Local energy, Practical coding algorithm, Spherical representation, State-of-art coders, Wavelet image coding, Wavelet subbands, Image resolution, Wavelet transforms, Algorithms, Hierarchical systems, Information analysis, Coding algorithms, Subband information
Kaynak
IEEE International Conference on Image Processing 2005
WoS Q Değeri
N/A
Scopus Q Değeri
N/A
Cilt
Sayı
Künye
Ateş, H. F. & Orchard, M. T. (2005). Wavelet image coding using the spherical representation. Paper presented at the IEEE International Conference on Image Processing 2005, 693-696. doi:10.1109/ICIP.2005.1529694
