Image processing apparatus and image processing method

Patent metadata

Field	Value
Publication number	US-11212529-B2
Application number	US-201816639196-A
Country	US
Kind code	B2
Filing date	May 22, 2018
Priority date	Aug 23, 2017
Publication date	Dec 28, 2021
Grant date	Dec 28, 2021

Abstract

An image processing apparatus and an image processing method are provided. The image processing apparatus includes: a division control unit that, on the basis of a first boundary dividing an image into a plurality of partial areas, further sets a second boundary and divides each of the partial areas into a plurality of slices; and an encoding unit that encodes the image on the basis of the first boundary and the second boundary, in which the division control unit sets the second boundary such that the plurality of slices included in the partial area has unequal numbers of lines, and the slice situated at the bottom among the plurality of slices included in the partial area is not a slice having the most lines in the partial area.

First claim

The invention claimed is:

1. An image processing apparatus, comprising:
a plurality of chips;
a division control unit configured to:
set, based on a first boundary that divides an image into a plurality of partial areas, a second boundary; and
divide each of the plurality of partial areas into a plurality of slices based on the second boundary, wherein
each of the plurality of slices of a specific partial area of the plurality of partial areas includes unequal numbers of lines,
a specific slice of the plurality of slices of the specific partial area is at a bottom position in the specific partial area among each of the plurality of slices of the specific partial area,
the specific slice includes a smaller number of lines in the specific partial area among the plurality of slices of the specific partial area,
the second boundary is associated with an amount of transfer of decoded image data between the plurality of chips, and
the decoded image data is related to the specific slice; and

an encoding unit configured to encode the image based on the first boundary and the second boundary.

2. The image processing apparatus according to claim 1 , wherein
each of the plurality of chips has a plurality of cores, and
each of the plurality of cores is configured to perform a function of the encoding unit.

3. The image processing apparatus according to claim 2 , wherein
a specific core of the plurality of cores is configured to encode one of the plurality of slices of at least one of the plurality of partial areas based on the first boundary and the second boundary, and
a specific chip of the plurality of chips is configured to encode one of the plurality of partial areas.

4. The image processing apparatus according to claim 1 , wherein the amount of transfer is specified based on one of hierarchical search information or image feature amount information.

5. The image processing apparatus according to claim 1 , wherein
based on the decoded image data that is not transferrable between the plurality of chips, the division control unit is further configured to set the second boundary, and
each of the plurality of slices in the specific partial area includes equal numbers of lines.

6. The image processing apparatus according to claim 5 , wherein
based on the image that is not associated with a referenced frame, the division control unit is further configured to set the second boundary, and
each of the plurality of slices in the specific partial area includes equal numbers of lines.

7. The image processing apparatus according to claim 1 , wherein the number of lines in each of the plurality of slices in the specific partial area is an integer multiple of a number of vertical pixels of a coding unit.

8. The image processing apparatus according to claim 7 , wherein the number of lines in each of the plurality of slices in the specific partial area is an integer multiple of a number of vertical pixels of a largest coding unit.

9. An image processing method, comprising:
in an image processing apparatus:
setting, based on a first boundary that divides an image into a plurality of partial areas, a second boundary;
dividing each of the plurality of partial areas into a plurality of slices based on the second boundary, wherein
each of the plurality of slices of a specific partial area of the plurality of partial areas includes unequal numbers of lines,
a specific slice of the plurality of slices of the specific partial area is at a bottom position in the specific partial area among each of the plurality of slices of the specific partial area,
the specific slice includes a smaller number of lines in the specific partial area among the plurality of slices,
the second boundary is associated with an amount of transfer of decoded image data between a plurality of chips of the image processing apparatus, and
the decoded image data is related to the specific slice; and

encoding the image based on the first boundary and the second boundary.

Assignees

• Sony Semiconductor Solutions Corp

Inventors

• Tanaka Masao
• Kimura Tsuyoshi
• Yasuda Mikita
• Tsuchiya Toshiharu
• Chaki Yasuyuki

Classifications

• H04N19/174

  the region being a slice, e.g. a line of blocks or a group of blocks · CPC title

• H04N19/119 Primary

  Adaptive subdivision aspects, e.g. subdivision of a picture into rectangular or non-rectangular coding blocks · CPC title

• H04N19/51

  Motion estimation or motion compensation · CPC title

• H04N19/436

  using parallelised computational arrangements · CPC title

• H04N19/172

  the region being a picture, frame or field · CPC title