Moving picture compression encoding method, apparatus and program

An apparatus for performing compression encoding of a moving picture, said apparatus including an intra predicting unit comprising:

• means for calculating first evaluation values based upon difference information indicative of differences between a moving picture signal supplied to the apparatus and prediction signals generated by said intra predicting unit, for a case where a plurality of block sizes exist;
• means for preliminarily selecting a plurality of prediction modes based upon the first evaluation values;
• means for calculating second evaluation values based upon difference information of the prediction modes preliminarily selected;
• means for selecting one prediction mode from the preliminarily selected prediction modes based upon the second evaluation values;
• and
• means for selecting an optimum block size based upon the second evaluation values among a plurality of block sizes.

An apparatus for performing compression encoding of a moving picture, includes an intra predicting unit, said intra predicting unit comprising:

• a prediction signal generator, which receives a reconstructed signal that is part of an image signal of an adjacent block for which encoding ended before encoding of a block to undergo intra prediction, for generating and outputting prediction signals and storing the prediction signals in a prediction signal memory;
• a prediction mode decision unit comprising:
• first a cost calculator for generating first evaluation values based upon difference information indicative of differences between the prediction signals generated by said prediction signal generator and an input moving picture signal;
• a preliminary selector for selecting and outputting to a second cost calculator at least two prediction modes based upon the first evaluation values;
• the second cost calculator for frequency-converting difference information and generating second evaluation values with regard to the prediction modes output from said preliminary selector;
• and
• a prediction mode selector for selecting an optimum prediction mode based upon the second evaluation values;
• and
• a prediction signal call circuit for reading in a prediction signal, which corresponds to the prediction mode output from said prediction mode decision unit, from said prediction signal memory and outputting this signal as a result of intra prediction.

An apparatus for performing compression encoding of a moving picture, said apparatus including an intra predicting unit comprising:

• a prediction signal generator, which receives a reconstructed signal that is part of an image signal of an adjacent block for which encoding ended before encoding of a block to undergo intra prediction, for generating and outputting prediction signals and storing the prediction signals in a prediction signal memory;
• a prediction mode decision unit including:
• a first cost calculator for calculating and outputting first evaluation values based upon difference information indicative of differences between an input moving picture signal and outputs of said prediction signal generator;
• a prediction mode selector for selecting an optimum prediction mode based upon the first evaluation values and outputting this prediction mode and difference information thereof;
• and
• a second cost calculator for frequency-converting the difference information of the prediction mode, calculating a second evaluation value and outputting the prediction mode and the evaluation value as results of intra prediction;
• and
• a prediction signal call circuit for reading in a prediction signal, which corresponds to the prediction mode output from said prediction mode decision unit, from said prediction signal memory and outputting this signal as a result of intra prediction.

An apparatus for performing compression encoding of a moving picture, said apparatus including an intra predicting unit comprising:

• a prediction signal generator, which receives a reconstructed signal that is part of an image signal of an adjacent block for which encoding ended before encoding of a block to undergo intra prediction, for generating and outputting prediction signals and storing the prediction signals in a prediction signal memory;
• a prediction mode decision unit including:
• a difference calculator for calculating difference information indicative of differences between a moving picture signal and outputs of said prediction signal generator;
• a cost calculator for frequency-dividing the difference information of prediction modes output from said difference calculator, calculating evaluation values and outputting the evaluation values;
• a prediction mode selector for selecting an optimum prediction mode based upon the evaluation values and outputting this prediction mode and difference information thereof;
• and
• a prediction signal call circuit for reading in a prediction signal, which corresponds to the prediction mode output from said prediction mode decision unit, from said prediction signal memory and outputting this signal as a result of intra prediction.

A method for performing compression encoding of a moving picture, said method comprising the steps of:

• calculating first evaluation values based upon differences information indicative of differences between an input moving picture signal and prediction signals that have been generated by an intra predicting unit;
• preliminarily selecting a plurality of prediction modes based upon the first evaluation values;
• calculating second evaluation values based upon difference information of the prediction modes preliminarily selected;
• and
• selecting one prediction mode from the preliminarily selected prediction modes based upon the second evaluation values.

A method for performing compression encoding of a moving picture, said method comprising the steps of:

• calculating first evaluation values based upon difference information indicative of differences between an input moving picture signal and prediction signals that have been generated by an intra predicting unit for a case where a plurality of block sizes exist;
• preliminarily selecting a plurality of prediction modes based upon the first evaluation values;
• calculating second evaluation values based upon difference information of the prediction modes preliminarily selected;
• selecting one prediction mode from the preliminarily selected prediction modes based upon the second evaluation values;
• and
• selecting an optimum block size based upon the second evaluation values.

A method for performing compression encoding of a moving picture, said method comprising the following steps as intra prediction in the moving picture compression encoding:

• receiving a reconstructed signal that is part of an image signal of an adjacent block for which encoding ended before encoding of a block to undergo intra prediction, and generating and outputting prediction signals and storing the prediction signals in a prediction signal memory;
• generating first evaluation values based upon difference information indicative of differences between generated prediction signals and an input moving picture signal;
• selecting and outputting at least two prediction modes based upon the first evaluation values;
• frequency-converting difference information and generating second evaluation values with regard to the prediction modes that have been output;
• selecting an optimum prediction mode based upon the second evaluation values;
• and
• reading in a prediction signal, which corresponds to the prediction mode output, from said prediction signal memory and outputting this signal as a result of intra prediction.

A method for performing compression encoding of a moving picture, said method comprising the following steps as intra prediction in the moving picture compression encoding:

• receiving a reconstructed signal that is part of an image signal of an adjacent block for which encoding ended before encoding of a block to undergo intra prediction, and generating and outputting prediction signals and storing the prediction signals in a prediction signal memory;
• calculating and outputting first evaluation values based upon difference information indicative of differences between an input moving picture signal and outputs of said prediction signal generator;
• selecting an optimum prediction mode based upon the first evaluation values and outputting this prediction mode and difference information thereof;
• frequency-converting the difference information of the prediction mode, calculating a second evaluation value and outputting the prediction mode and evaluation value as results of intra prediction;
• and
• reading in a prediction signal, which corresponds to the prediction mode output, from said prediction signal memory and outputting this signal as a result of intra prediction.

A method for performing compression encoding of a moving picture, said method comprising the following steps as intra prediction in the moving picture compression encoding:

• receiving a reconstructed signal that is part of an image signal of an adjacent block for which encoding ended before encoding of a block to undergo intra prediction, and generating and outputting prediction signals and storing the prediction signals in a prediction signal memory;
• calculating difference information indicative of differences between a moving picture signal and outputs of said prediction signal generator;
• frequency-dividing the difference information of prediction modes, calculating evaluation values and outputting the evaluation values;
• selecting an optimum prediction mode based upon the evaluation values and outputting this prediction mode and difference information thereof;
• and
• reading in a prediction signal, which corresponds to the prediction mode output, from said prediction signal memory and outputting this signal as a result of intra prediction.

A computer program for causing a computer constituting a moving picture compression encoding apparatus to execute the following processing:

• processing for calculating first evaluation values based upon difference information indicative of differences between an input moving picture signal and prediction signals that have been generated by an intra predicting unit;
• processing for preliminarily selecting a plurality of prediction modes based upon the first evaluation value;
• processing for calculating second evaluation values based upon difference information of the prediction modes preliminarily selected;
• and
• processing for selecting one prediction mode from the preliminarily selected prediction modes based upon the second evaluation values.

A computer program for causing a computer constituting a moving picture compression encoding apparatus to execute the following processing, in a case where a plurality of block sizes exist:

• processing for calculating first evaluation values based upon difference information indicative of differences between an input moving picture signal and prediction signals that have been generated by an intra predicting unit;
• processing for preliminarily selecting a plurality of prediction modes based upon the first evaluation values;
• processing for calculating second evaluation values based upon difference information of the prediction modes preliminarily selected;
• processing for selecting one prediction mode from the preliminarily selected prediction modes based upon the second evaluation values;
• and
• processing for selecting an optimum block size based upon the second evaluation values.

A computer program for causing a computer constituting a moving picture compression encoding apparatus to execute the following processing as intra prediction:

• processing for inputting a reconstructed signal that is part of an image signal of an adjacent block for which encoding ended before encoding of a block to undergo intra prediction, and generating and outputting prediction signals and storing the prediction signals in a prediction signal memory;
• processing for generating first evaluation values based upon difference information indicative of differences between the generated prediction signals and an input moving picture signal;
• selecting and outputting at least two prediction modes based upon the first evaluation values;
• processing for frequency-converting difference information and generating second evaluation values with regard to the prediction modes that have been output;
• processing for selecting an optimum prediction mode based upon the second evaluation values;
• and
• processing for reading in a prediction signal, which corresponds to the prediction mode output, from said prediction signal memory and outputting this signal as a result of intra prediction.

A computer program for causing a computer constituting a moving picture compression encoding apparatus to execute the following processing as intra prediction:

• processing for inputting a reconstructed signal that is part of an image signal of an adjacent block for which encoding ended before encoding of a block to undergo intra prediction, and generating and outputting prediction signals and storing the prediction signals in a prediction signal memory;
• processing for calculating and outputting first evaluation values based upon difference information indicative of differences between an input moving picture signal and outputs of said prediction signal generator;
• processing for selecting an optimum prediction mode based upon the first evaluation values and outputting this prediction mode and difference information thereof;
• processing for frequency-converting the difference information of the prediction mode, calculating second evaluation values and outputting the prediction mode and evaluation values as results of intra prediction;
• and
• processing for reading in a prediction signal, which corresponds to the prediction mode output, from said prediction signal memory and outputting this signal as a result of intra prediction.

A computer program for causing a computer constituting a moving picture compression encoding apparatus to execute the following processing as intra prediction:

• processing for inputting a reconstructed signal that is part of an image signal of an adjacent block for which encoding ended before encoding of a block to undergo intra prediction, and generating and outputting prediction signals and storing the prediction signals in a prediction signal memory;
• processing for calculating difference information indicative of differences between a moving picture signal and outputs of said prediction signal generator;
• processing for frequency-dividing the difference information of prediction modes, calculating evaluation values and outputting the evaluation values;
• processing for selecting an optimum prediction mode based upon the evaluation values and outputting this prediction mode and difference information thereof;
• and
• processing for reading in a prediction signal, which corresponds to the prediction mode output, from said prediction signal memory and outputting this signal as a result of intra prediction.