نتایج جستجو برای: lossless coding
تعداد نتایج: 130599 فیلتر نتایج به سال:
Recently the MPEG Audio standardization group has successfully concluded the standardization process on technology for lossless coding of audio signals. A summary of the scalable lossless coding (SLS) technology as one of the results of this standardization work is given. MPEG-4 scalable lossless coding provides a fine-grain scalable lossless extension of the well-known MPEG-4 AAC perceptual au...
In lossless coding, compresssion and decompression of source data result in the exact recovery of the individual elements of the original source data. Lossless image / video coding is necessary in applications where no loss of pixel values is tolerable. Examples are medical imaging, remote sensing, in image/video archives and studio applications where tandemand trans-coding are used in editing,...
H.264/AVC is the latest international video coding standard. It is currently the most powerful and state-of-the-art standard; thus, it can provide enhanced coding efficiency for a wide range of video applications, including video telephony, video conferencing, TV, storage, streaming video, digital cinema, and many others (Luthra et al., 2003; Sullivan & Wiegand, 2005; Wiegand et al., 2003). To ...
The lossless compression of electroencephalographic (EEG) data is of great interest to the biomedical research community. In this paper, a two-stage technique of lossless compression involving decorrelating the sample points of the EEG signal and then entropy coding the resulting signal is examined. Two alternatives are presented for performing the rst task. Speciically, the rst stage consists ...
This report proposes a new coding method, which realizes lossless, near-lossless and lossy coding with a unified single algorithm. The method is based on a lifting-structured lossless DCT, which maps an "integer" input vector to also an "integer" output vector. The proposed method can be used as not only a high performance "lossless" encoder but also a "lossy" encoder compatible to conventional...
Manuscript received December 17, 1998. Manuscript revised March 2, 1999. † The authors are with the Institute of Industrial Science, The University of Tokyo, Tokyo, 106-8558 Japan. SUMMARY Lossless block transforms and filter banks that map integers to integers are important for unified lossless and lossy image coding systems. In this paper, we present simple yet effective methods for designing...
Recent papers have proposed linear prediction as a useful method for lossless audio coding. Transform coding, however, has hardly been investigated, although it seems to be more suited for the harmonic structure of most audio signals. In this paper we present some results on lossless transform coding of CD-quality audio data. One main aspect lies on a convenient quantization method to guarantee...
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