摘要:
A method of progressively coding/decoding 3-D mesh information, and an apparatus therefor are provided. The progressive 3-D mesh information coding method includes the steps of reconstructing an input 3-D mesh into a plurality of mesh components, coding each of the plurality of mesh components, and multiplexing the plurality of coded mesh components into a compressed bit stream and transmitting the compressed bit stream. The method of progressively decoding the transmitted, compressed bit stream which has been coded by the coding method, includes dividing the transmitted bit stream into a plurality of coded mesh components, decoding each of the plurality of coded mesh components, and reconstructing a 3-D mesh by synthesizing the plurality of decoded mesh components.
摘要:
Disclosed are a method and an apparatus of encoding/decoding by using a bit precision. In accordance to an aspect of the present invention, it is possible to encoding and decoding an image or a video by using a bit precision. Accordingly, compression efficiency can be improved and the decoding complexity can be reduced by encoding/decoding video data by use of the bit precision.
摘要:
An apparatus and a method for encoding/decoding video data are disclosed. In one embodiment, the decoding apparatus includes: i) a toolbox unit configured to store a plurality of functional units, ii) a separation unit configured to receive a decoder description and separate the decoder description into schema information and connection control information and output the schema information and the connection control information. The decoding apparatus may further include iii) a parser configured to parse and output input bitstream by using the schema information, iv) a decoder forming unit configured to load and connect pertinent functional units from the toolbox unit based on the connection control information and to form a reconfigured decoder; and v) a decoding solution configured to decode the bitstream outputted from the parser by using the reconfigured decoder. At least one embodiment can reconfigure a decoder in various form by using the decoder description.
摘要:
A method of and an apparatus for encoding/decoding video data are disclosed. Included in the decoding apparatus are: a tool box that stores functional units; a decompression unit that receives a compressed decoder description and decompresses a CDDL-based decoder description; a decoder description analyzing unit that transforms the CDDL-based decoder description to an XML-based decoder description; an ADM generation unit that generates an abstract decoding model (ADM) using the XML-based decoder description; and a decoding solution that loads functional units stored in the tool box and decodes input data to video data by using the ADM or XML-based decoder description. With the present invention, it is possible to reconfigure and reconstruct a decoder in various way using the decoder description.
摘要:
Discussed are a method and an apparatus of encoding/decoding by using a bit precision. In accordance to an aspect of the present invention, it is possible to encoding and decoding an image or a video by using a bit precision. Accordingly, compression efficiency can be improved and the decoding complexity can be reduced by encoding/decoding video data by use of the bit precision.
摘要:
Provided are encoding and decoding stitching information generated when the 3D mesh model that is the non-manifold or non-orientable model is converted into orientable and manifold models upon encoding the 3D mesh information of the 3D mesh model. The method of encoding 3D mesh information includes the steps of: encoding the 3D mesh information to output an encoded bitstream; encoding stitching information of elements contained in the 3D mesh information, the stitching information having a total number of duplicated original elements and, for each of the duplicated original elements, the duplication number, original-element identification information and duplicated-element identification information; and generating a packet of the bitstream, wherein the encoded stitching information is inserted into the packet.
摘要:
Disclosed are a system and method for encoding and decoding an image. The image compression system includes an image segmentation unit (110) for segmenting a first image into a plurality of sub-images; a first encoding unit (120) for encoding the sub-images to output sub-image bitstreams; a BMAP construction unit (130) for calculating the quantity of information of each sub-image bitstream and generating BMAP information using the calculated quantity of information and information on construction of each sub-image; and a bitstream combining unit (150) for combining the sub-image bitstreams and BMAP information.
摘要:
A unified codec device and method are disclosed. A decoding device includes a decoding description decoder, generating at least one table by using inputted decoding description; and a codec unit, decoding and outputting encoded video data, included in an inputted bit-stream, to moving picture data by using the table. With the present invention, a bit-stream, encoded by various formats according to each standard (e.g. MPEG-1, MPEG-2, MPEG-4 and MPEG-4 AVC), can be decoded by the same information recognizing method.
摘要:
A DPCM operation which can reduce the size of differential data and a method and an apparatus for encoding data using the DPCM operation are provided. A method for generating differential data includes generating differential data by performing a DPCM operation on quantized data and generating predicted differential data by performing a predicted DPCM operation on the quantized data, generating circular-quantized differential data and circular-quantized predicted differential data by performing a circular quantization operation on the differential data and the predicted differential data so as to reduce their ranges, and selecting one of the circular-quantized differential data and the circular-quantized predicted differential data depending on their magnitudes.
摘要:
An apparatus and a method for encoding and decoding key data are provided. An apparatus for encoding DPCMed differential data of key data includes a DND operator which performs on input differential data a predetermined number of times a DND operation, in which a divide operation is performed on the input differential data so as to divide differential data belonging to a positive number region into halves and so as to convert one half of the differential data belonging to an upper range than the other half into negative values, and either a divide-up operation or a divide-down operation is selectively performed on the results of the divide operation depending on the range of the results of the divide operation so as to reduce the range of differential data belonging to a negative number region or the positive number region, respectively, a shift-up operator which performs a shift-up operation on the results of the DND operation so as to transfer the differential data having been through the DND operation to either the positive or negative number region, a differential data selector which selectively outputs either the differential data having been through the DND operation or the differential data having been through the shift-up operation, and an entropy encoder which entropy-encodes the differential data selected by the differential data selector.