Back to results
US 2019/0158862 A1Published application
Decoding device and encoding device
AssigneeKabushiki Kaisha Toshiba
InventorsTakeshi CHUJOH, Tomoya KODAMA
Life of this patent
Estimating the term…
Abstract
According to an embodiment, a decoding device includes an acquiring unit configured to acquire first format information, encoded data, and first filter information, the first format information indicating a resolution of a color-difference component of the encoded data; a decoding unit configured to decode the encoded data to obtain a decoded image; and a converting unit configured to convert a color-difference format of the decoded image represented by a first color-difference format by using a filter identified by the filter information.
Claims4
(canceled)
A decoding device comprising:
- a receiver to acquire transmission information including encoded data, a first color-difference format, a second color-difference format, and filter identifying information, the first color-difference format indicating a resolution of a color-difference component of the encoded data that is generated according to predetermined syntax, the second color-difference format indicating a resolution of a color-difference component used when reproducing a decoded image obtained by decoding the encoded data, the filter identifying information being for identifying a filter that is used in converting a color-difference format of the decoded image;
- a decoder to decode the encoded data included in the transmission information to obtain the decoded image;
- and
- a converter to convert a color-difference format of the decoded image using the filter identified with the filter identifying information, wherein
- the first color-difference format is indicative of a resolution of a color-difference component of a 4:2:2 format or a 4:4:4 format, and the second color-difference format is indicative of a resolution of a color-difference component of a 4:2:0 format;
- or the first color-difference format is indicative of the resolution of the color-difference component of the 4:4:4 format, and the second color-difference format is indicative of the resolution of the color-difference component of the 4:2:0 format or the 4:2:2 format;
- the filter identifying information includes a filter coefficient;
- and
- the converter converts the color-difference format of the decoded image by using at least one of a horizontal down-sampling filter and a vertical down-sampling filter in accordance with the filter coefficient, the first color-difference format, and the second color-difference format.
6 more elements
A decoding device comprising:
- a receiver to acquire transmission information including encoded data, a first color-difference format, a second color-difference format, and filter information, the first color-difference format indicating a resolution of a color-difference component of the encoded data that is generated according to predetermined syntax, the second color-difference format indicating a resolution of a color-difference component used when reproducing a decoded image obtained by decoding the encoded data, the filter information being for identifying a filter that is used in converting a color-difference format of the decoded image;
- a decoder to decode the encoded data included in the transmission information to obtain the decoded image;
- and
- a converter to convert a color-difference format of the decoded image using the filter identified with the filter information, wherein
- the first color-difference format is indicative of a resolution of a color-difference component of a 4:2:2 format or a 4:4:4 format, and the second color-difference format is indicative of a resolution of a color-difference component of a 4:2:0 format;
- or the first color-difference format is indicative of the resolution of the color-difference component of the 4:4:4 format, and the second color-difference format is indicative of the resolution of the color-difference component of the 4:2:0 format or the 4:2:2 format;
- the filter information includes identification information of the filter;
- and
- the converter converts the color-difference format of the decoded image by using at least one of a horizontal down-sampling filter and a vertical down-sampling filter in accordance with the identification information of the filter, the first color-difference format, and the second color-difference format.
6 more elements
An encoding device comprising:
- an encoder to generate encoded data;
- a generator to generate a first color-difference format, a second color-difference format, and filter information, the first color-difference format indicating a resolution of a color-difference component of the encoded data that is generated according to predetermined syntax, the second color-difference format indicating a resolution of a color-difference component used when reproducing a decoded image obtained by decoding the encoded data, the filter information being for identifying a filter that is used in converting a color-difference format of the decoded image;
- and
- an outputter to output transmission information including the encoded data, the first color-difference format, the second color-difference format, and the filter information, wherein
- the filter information includes a filter coefficient or identification information of the filter.
2 more elements
Dependencies are inferred from the claim text.