# US 2017/0257633 A1 · Encoding apparatus, encoding method and program

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2017/0257633 A1
- Document ID: US20170257633A1
- Status: Published application
- Kind: A1
- Application number: 15/602,531
- Filed: 2017-05-23
- Published: 2017-09-07
- Earliest claimed: 2011-10-24
- Assignees: Sony Corporation; Sony Interactive Entertainment Inc.
- Applicants: Sony Corporation; Sony Interactive Entertainment Inc.
- Inventors: Nobuyoshi Miyahara; Yuji Ando; Ryohei Okada; Osamu Ota
- Web page: https://patentgrep.com/patent/US20170257633A1

## CPC

- H04N 19/167: Position within a video image, e.g. region of interest [ROI]
- H04N 19/107: between spatial and temporal predictive coding, e.g. picture refresh
- H04N 19/137: Motion inside a coding unit, e.g. average field, frame or block difference
- H04N 19/172: the region being a picture, frame or field
- H04N 19/179: the unit being a scene or a shot
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

There is provided an encoding apparatus, including an intra-block determination section which determines that a prediction mode of a block is a forced intra-prediction mode, by a frequency based on a priority of each block of an image to be encoded, an encoding section which encodes the block, to which the prediction mode has been determined to be an intra-prediction mode by the intra-block determination section, with the intra-prediction mode, and a transmission section which transmits an encoded result of the image to be encoded obtained by the encoding section, and the prediction mode of the image.

## Claims

### Claim 1

An encoding apparatus, comprising:
an encoding section which encodes a block of a region, for which a prediction mode has been determined to be an intra-prediction mode based on an update frequency of the region in an image to be encoded, with the intra-prediction mode.

### Claim 2 (depends on 1)

The encoding apparatus according to claim 1, further comprising:
an intra-block determination section which determines that the prediction mode of the block is the intra-prediction mode based on the update frequency.

### Claim 3 (depends on 2)

The encoding apparatus according to claim 2,
wherein the intra-block determination section determines that the prediction mode of the block of the region with the high update frequency is the intra-prediction mode.

### Claim 4 (depends on 3)

The encoding apparatus according to claim 3,
wherein the intra-block determination section determines that the prediction mode of the block of the region with the high update frequency is the intra-prediction mode according to a type of the image to be encoded.

### Claim 5 (depends on 3)

The encoding apparatus according to claim 3,
wherein the region with the high update frequency is an observed region of a user.

### Claim 6 (depends on 2)

The encoding apparatus according to claim 2,
wherein the intra-block determination section determines that the prediction mode of the block of the region is the intra-prediction mode by a frequency based on a high update frequency.

### Claim 7 (depends on 6)

The encoding apparatus according to claim 6,
wherein the frequency is the frequency of a frame of the image to be encoded which includes a block, for which the prediction mode has been determined to be the intra-prediction mode.

### Claim 8 (depends on 1)

The encoding apparatus according to claim 1, further comprising:
a transmission section which transmits an encoded result of the image to be encoded obtained by the encoding section, and the prediction mode of the image.

### Claim 9

An encoding method of an encoding apparatus comprising:
encoding a block of a region, for which a prediction mode has been determined to be an intra-prediction mode based on an update frequency of the region in an image to be encoded, with the intra-prediction mode.

### Claim 10

A decoding apparatus, comprising:
an decoding section which decodes an encoded stream, for which a prediction mode of a block has been determined to be an intra-prediction mode based on a priority of each block in an image to be encoded, with the intra-prediction mode,
wherein the priority is determined to increase in the block of the region with a high update frequency in the image to be encoded.

### Claim 11 (depends on 10)

The decoding apparatus according to claim 10,
wherein the priority is determined to increase in the block of the region with a high update frequency in the image to be encoded according to a type of the image to be encoded.

### Claim 12

A decoding method of a decoding apparatus, comprising:
decoding an encoded stream, for which a prediction mode of a block has been determined to be an intra-prediction mode based on a priority of each block in an image to be encoded, with the intra-prediction mode,
wherein the priority is determined to increase in the block of the region with a high update frequency in the image to be encoded.