Video coding and video decoding apparatus
AssigneeKabushiki Kaisha Toshiba
InventorsNoboru Yamaguchi, Toshiaki Watanabe, Takashi Ida, Takaaki Kuratate
Life of this patent
Estimating the term…
Abstract
A video encoding apparatus is provided with a resolution converting section, an encoding section, and a transmitting section. The resolution converting section enlarges or reduces a binary picture which represents the shape of an object. The encoding section encodes a binary picture reduced by the resolution converting section. The reduction ratio used by the resolution converting section is encoded, and the transmitting section transmits this encoded reduction ratio along with encoded data on the binary picture. The amount of encoded data produced from the encoding section is controlled by changing the enlargement/reduction ratio used by the resolution converting section.
Claims28
A computer system for video decoding, comprising:
- means for demultiplexing coded data into coded alpha map data and coded position/size data;
- and
- means for decoding the coded alpha-map data into an alpha-map signal of a rectangular object region in accordance with the coded position/size data, the rectangular object region containing an object and a part of a background surrounding the object.
A computer system for video decoding, comprising:
- means for demultiplexing coded data into coded binary picture data and coded position/size data;
- and
- means for decoding the coded binary picture data into a binary picture signal of a rectangular object region in accordance with the coded position/size data, the rectangular object region containing an object and a part of a background surrounding the object.
A method of decoding video using a computer system, comprising the steps of:
- demultiplexing coded data into coded alpha-map data and coded position/size data;
- and
- decoding the coded alpha-map data into an alpha-map signal of a rectangular object region in accordance with the coded position/size data, the rectangular object region containing an object and a part of a background surrounding the object.
A method of decoding video using a computer system, comprising the steps of:
- demultiplexing coded data into coded binary picture data and coded position/size data;
- and
- decoding the coded binary picture data into a binary picture signal of a rectangular object region in accordance with the coded position/size data, the rectangular object region containing an object and a part of a background surrounding the object.
A computer system for video decoding, comprising:
- a demultiplexing section which demultiplexes coded data into coded alpha-map data and coded position/size data;
- and
- a decoding section which decodes the coded alpha-map data into an alpha-map signal of a rectangular object region in accordance with the coded position/size data, the rectangular object region containing an object and a part of a background surrounding the object.
A computer system for video decoding, comprising:
- a demultiplexing section which demultiplexes coded data into coded binary picture data and coded position/size data;
- and
- a decoding section which decodes the coded binary picture data into a binary picture signal of a rectangular object region in accordance with the coded position/size data, the rectangular object region containing an object and a part of a background surrounding the object.
The computer system according to clam 22, further comprising a display which displays an image.
Dependencies are inferred from the claim text.