This document specifies the use of the wavelet-based JPEG2000 codec for the coding and display of timed sequences of images (motion sequences), possibly combined with audio, and composed into an overall presentation. ...
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标准号:
ISO/IEC 15444-3-2002
This document specifies the use of the wavelet-based JPEG2000 codec for the coding and display of timed sequences of images (motion sequences), possibly combined with audio, and composed into an overall presentation. In this specification, a file format is defined, and guidelines for the use of the JPEG2000 codec for motion sequences are supplied.
A number of image and video coding related standards (see Bibliography) include a requirement for decodersto implement an integer-output 8x8 inverse discrete cosine transform (IDCT) for the generation of inversetransf...
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标准号:
ISO/IEC 23002-1-2006
A number of image and video coding related standards (see Bibliography) include a requirement for decodersto implement an integer-output 8x8 inverse discrete cosine transform (IDCT) for the generation of inversetransformedsample differences with a nominal range from –2B to (2B)–1 for some integer number of bits B,where B is greater than or equal to 8. This part of ISO/IEC 23002 specifies conformance requirements forestablishing sufficient accuracy in such an integer-output IDCT implementation. It is intended to be suitablefor reference to establish partial or complete requirements for IDCT accuracy for conformance to otherstandards that require IDCT *** accuracy requirements specified in the main body of this part of ISO/IEC 23002 are essentially the sameas those previously specified in [7], in Annex A of [1], and in Annex A of [5]. These requirements have beenspecified herein to resolve normative references to [7] in MPEG standards after its withdrawal and to provideimproved clarity for the specification of IDCT accuracy *** additional requirement on encoded-bitstream intra refresh frequency was also previously specified in [7],establishing a requirement of bitstream conformance that each macroblock be intra-coded at least once withineach series of 132 times that it is coded in a predicted picture without an intervening intra picture. Thatadditional requirement is not specified in this part of ISO/IEC 23002, in order to confine its scope to thedomain of decoder conformance *** allowances for modification of the specified accuracy requirements are made within this part ofISO/IEC 23002. Additional accuracy requirements that may be invoked by a referencing specification arespecified in Annexes A and B.
This part of ISO/IEC 23002 defines auxiliary video streams as data coded as video sequences andsupplementing a primary video sequence. Depth maps and parallax maps are the first specified types ofauxiliary video strea...
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标准号:
ISO/IEC 23002-3-2007
This part of ISO/IEC 23002 defines auxiliary video streams as data coded as video sequences andsupplementing a primary video sequence. Depth maps and parallax maps are the first specified types ofauxiliary video streams, relating to stereoscopic-view video *** this context, this part of ISO/IEC 23002 specifies syntax and semantics for conveying information describingthe interpretation of auxiliary video *** for such information is specified herein as a stream of data referred to as a supplemental information(SI) message stream. Provisions for extensibility have been included, so that additional types of data can bedefined in future extensions of the current SI message stream syntax by ISO/IEC.
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