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Image processing apparatus and image processing method for inhibiting application of an offset to pixels of an image

專利號
US11039133B2
公開日期
2021-06-15
申請人
SONY CORPORATION（JP Tokyo）
發(fā)明人
Yusuke Miyagi; Yoshitaka Morigami
IPC分類
H04N19/117; H04N19/157; H04N19/176; H04N19/42
技術領域
image,skip,prediction,offset,in,adaptive,filter,data,section,sao
地域： Tokyo

摘要

A filter processing section 352 performs a filter process for applying an offset to pixels of a decoded image. A filter controller 351 inhibits the offset from being applied to an edge portion depending on occurrence of a transform unit in a transformation skip mode in which orthogonal transformation is not performed on a predicted residual. Furthermore, the filter controller 351 determines whether an offset for gradation adjustment using the decoded image is to be applied in the filter processing section 352 or not, and sets an offset in case the offset is to be applied. It is possible to make less conspicuous in the boundary between a transform unit where orthogonal transformation is performed by the offset for gradation adjustment and the transform unit where orthogonal transformation is skipped. The image quality of the decoded image is restrained from being lowered.

說明書

1-3. Outline of Adaptive Offset Filter

1-4. Configuration of Adaptive Offset Filter

1-5. Adaptive Offset Filter Setting Operation

1-6. Other Operation of Adaptive Offset Filter

1-7. Other operation of Image Coding Apparatus

2. Configuration and Operation in Case Image Processing Apparatus Performs Decoding Process

2-1. Configuration of Image Decoding Apparatus

2-2. Operation of Image Decoding Apparatus

3. Application Examples

1. CONFIGURATION AND OPERATION IN CASE IMAGE PROCESSING APPARATUS PERFORMS CODING PROCESS

The present technology is applicable to an image processing apparatus that performs a coding process for coding an image. The configuration and operation of an image coding apparatus to which the present technology is applied will be described below.

<1-1. Configuration of Image Coding Apparatus>

FIG. 1 illustrates a configuration of an image coding apparatus. The image coding apparatus 10 codes image data using a prediction process, generating a coded stream according to HEVC, for example.

權利要求

1
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