JP2013232843A5

JP2013232843A5 -

Info

Publication number: JP2013232843A5
Application number: JP2012104844A
Authority: JP
Filing date: 2012-05-01
Publication date: 2015-06-18
Anticipated expiration: 2032-05-01

Description

本発明の動画像符号化装置は、同じサンプル比の複数の成分から構成される動画像信号を、成分ごとに独立して動き補償予測符号化する動画像符号化装置において、第１の動き探索手段と、前記第１の動き探索手段の結果に基づいて、さらに動き探索を行う第２の動き探索手段と、前記複数の成分から、代表成分を選択または算出して、代表成分画像を生成する代表成分画像生成手段とを具備し、前記第１の動き探索手段は、前記代表成分画像に対して動き探索をし、前記第２の動き探索手段は、前記複数の成分の各成分ごとに動き探索をすることを特徴とする。 The moving picture coding apparatus according to the present invention provides a first motion search in a moving picture coding apparatus that performs motion compensation prediction coding of a moving picture signal composed of a plurality of components having the same sample ratio independently for each component. A representative component image is generated by selecting or calculating a representative component from the plurality of components, and a second motion search unit that further performs a motion search based on the result of the first motion search unit ; and a representative component image generating means, the first motion estimation unit, the motion search with respect to the representative component image, the second motion search unit includes a motion for each component of the plurality of components It is characterized by searching.

Claims

In a video encoding device that performs motion compensation prediction encoding of a video signal composed of a plurality of components having the same sample ratio independently for each component,
First motion search means;
Second motion search means for further performing motion search based on the result of the first motion search means;
Representative component image generation means for selecting or calculating a representative component from the plurality of components and generating a representative component image;
Said first motion search means, the motion search with respect to the representative component image,
The moving image encoding apparatus, wherein the second motion search means performs a motion search for each of the plurality of components .

The moving image encoding apparatus according to claim 1, wherein the plurality of components are three primary colors of red, green, and blue, and the representative component is green.

The moving image code according to claim 1, wherein the plurality of components are three primary colors of red, green, and blue, and the representative component is calculated by weighted addition of the three primary colors, and the weight of green is large. Device.

The moving image encoding apparatus according to claim 1, wherein the plurality of components are three primary colors of red, green, and blue, and the representative component is a luminance calculated by weighted addition of the three primary colors. .

Comprising representative component determining means for determining a representative component generation method;
The representative component determination means determines a generation method of the representative component based on encoding information obtained in the encoding process,
2. The moving picture encoding apparatus according to claim 1, wherein the representative component image generation unit generates a representative component based on a generation method of the representative component determined by the representative component determination unit.

6. The moving picture coding apparatus according to claim 5, wherein the representative component determination unit changes a generation method of a representative component in a frame in which a motion compensation reference relationship is cut.

The moving image encoding apparatus according to claim 1, wherein the representative component image is a reduced image .

In a moving image coding method for performing motion compensation prediction coding of a moving image signal composed of a plurality of components having the same sample ratio independently for each component,
A first motion search step;
A second motion search step of further performing a motion search based on the result of the first motion search step;
A representative component image generation step of selecting or calculating a representative component from the plurality of components and generating a representative component image, and
The first motion search step performs a motion search on the representative component image,
In the moving image coding method, the second motion search step performs a motion search for each of the plurality of components .

In a program for causing a computer to execute each step of a moving image coding method for independently performing motion compensation prediction coding of a moving image signal composed of a plurality of components having the same sample ratio for each component,
A first motion search step;
A second motion search step of further performing a motion search based on the result of the first motion search step;
A representative component image generation step of selecting or calculating a representative component from the plurality of components and generating a representative component image, and
The first motion search step performs a motion search on the representative component image,
In the second motion search step, the computer is controlled to perform a motion search for each of the plurality of components .

A computer-readable storage medium storing the program according to claim 9 .