Method and apparatus for coding and decoding using bit-precision
AssigneeHumax Co., Ltd.
InventorsEuee-Seon Jang, Sun-Young Lee, Gi-Seok Son, Chung-Ku Lee
Life of this patent
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Abstract
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.
Claims15
An encoding apparatus, comprising:
- an adaptive bit precision computing unit, configured to compute an adaptive bit precision and an adaptive bit string of a symbol;
- and
- an encoding unit, configured to compute a bit precision per field and to insert the adaptive bit string and any one of the bit precision and the adaptive bit precision, according to whether the bit precision is identical to the adaptive bit precision, into a bitstream,
- wherein the encoding unit further inserts a bit indicating whether the adaptive bit precision is identical to the adaptive bit string into the bitstream.
An encoding method by an apparatus having at least one processor, the method using an adaptive bit precision, the method comprising:
- computing, by the at least one processor, a bit precision per field and inserting the bit precision into a bitstream;
- computing, by the at least one processor, an adaptive bit precision of a symbol;
- computing, by the at least one processor, an adaptive bit string of the symbol by using the adaptive bit precision;
- inserting, by the at least one processor, a bit indicating whether the bit precision is identical to the adaptive bit precision into the bitstream;
- and
- inserting, by the at least one processor, at least one of the adaptive bit precision and the adaptive bit string, according to whether the bit precision is identical to the adaptive bit precision, into the bitstream.
A decoding apparatus using an adaptive bit precision, comprising:
- an adaptive bit precision extracting unit, configured to extract at least one of an adaptive bit precision and an adaptive bit string from a bitstream;
- and
- a decoding unit, configured to extract a bit precision from the bitstream and to decode the adaptive bit string as a symbol by using any one of the bit precision and the adaptive bit precision according to whether the bit precision is identical to the adaptive bit precision,
- wherein the adaptive bit precision extracting unit determines whether to extract the adaptive bit precision according to whether the bit precision is identical to the adaptive bit precision.
A decoding method by an apparatus having at least one processor, the method using an adaptive bit precision, the method comprising:
- extracting, by the at least one processor, a bit precision from a bitstream;
- extracting, by the at least one processor, at least one of an adaptive bit precision and an adaptive bit string from the bitstream according to whether the bit precision is identical to the adaptive bit string;
- and
- decoding, by the at least one processor, the adaptive bit string as a symbol by using any one of the bit precision and the adaptive bit precision according to whether the bit precision is identical to the adaptive bit precision.
Dependencies are inferred from the claim text.