Moving picture encoding device, method, program, and moving picture decoding device, method, and program

A moving picture decoding device for, for encoding data of a plurality of input image signals each having a different resolution, making a reference to a decoding result of first encoding data to decode second encoding data, thereby to perform hierarchical decoding processing, characterized in:

• including:
• first image decoding means for decoding the first encoding data to generate a first decoded image signal;
• a filter for enlarging said first decoded image signal to generate an enlarged decoded image signal;
• and
• second image decoding means for making a reference to said enlarged decoded image signal to decode the second encoding data, and generating a second decoded image signal;
• and
• making a reference to motion information indicating a motion between frames of the image signal that specifies motion compensation decoding processing in said second image decoding means, subjecting said enlarged decoded image signal to a motion compensation prediction to generate a first prediction signal, subtracting said first prediction signal from said enlarged decoded image signal to generate a first prediction error signal, and adaptably regulating decoding processing of a decoded prediction error signal for a decoded image of said second encoding data based upon said first prediction error signal.

A moving picture encoding method of, for a plurality of input image signals each having a different resolution, making a reference to an encoding result of one input image signal to encode the other input image signal, thereby to perform hierarchical encoding, characterized in including the steps of:

• encoding a first input image signal, generating first encoding data, and generating a decoded image signal, being a decoding result of said first encoding data;
• enlarging said decoded image signal so that it has a resolution identical to that of a second input image signal, and generating an enlarged decoded image signal;
• and
• subjecting said second input image signal to a motion compensation prediction to generate a second prediction signal, subtracting said second prediction signal from said second input image to generate a second prediction error signal, subjecting said enlarged decoded image signal to a motion compensation prediction identical to the motion compensation prediction, to which said second input image signal has been subjected, to generate a first prediction signal, subtracting said first prediction signal from said enlarged decoded image signal to generate a first prediction error signal, and adaptably regulating encoding processing of said second prediction error signal based upon said first prediction error signal.

A moving picture decoding method of, for encoding data of a plurality of image signals each having a different resolution, making a reference to an decoding result of first encoding data to decode second encoding data, thereby to perform hierarchical decoding processing, characterized in including the steps of:

• decoding the first encoding data to generate a first decoded image signal;
• enlarging said first decoded image signal to generate an enlarged decoded image signal;
• and
• making a reference to motion information indicating a motion between frames of the image signal that specifies motion compensation decoding processing in generation of a second decoded image signal, said motion information being included in said second encoding data, subjecting said enlarged decoded image signal to a motion compensation prediction to generate a first prediction signal, subtracting said first prediction signal from said enlarged decoded image signal to generate a first prediction error signal, and adaptably regulating decoding processing of a decoded prediction error signal for a decoded image of said second encoding data based upon said first prediction error signal.

A non-transitory computer readable storage medium storing a program of moving picture encoding processing of, for a plurality of input image signals each having a different resolution, making a reference to an encoding result of one input image signal to encode the other input image signal, thereby to perform hierarchical encoding, characterized in causing an information processing device to performing the processing of:

• encoding a first input image signal, generating first encoding data, and generating a decoded image signal, being a decoding result of said first encoding data;
• enlarging said decoded image signal so that it has a resolution identical to that of a second input image signal, and generating an enlarged decoded image signal;
• and
• subjecting said second input image signal to a motion compensation prediction to generate a second prediction signal, subtracting said second prediction signal from said second input image signal to generate a second prediction error signal, subjecting said enlarged decoded image signal to a motion compensation prediction identical to the motion compensation prediction, to which said second input image signal has been subjected, to generate a first prediction signal, subtracting said first prediction signal from said enlarged decoded image signal to generate a first prediction error signal, and adaptably regulating encoding processing of said second prediction error signal based upon said first prediction error signal.

A non-transitory computer readable storage medium storing a program of moving picture decoding processing of, for encoding data of a plurality of image signals each having a different resolution, making a reference to an decoding result of first encoding data to decode second encoding data, thereby to perform hierarchical decoding, characterized in causing an information processing device to perform the processing of:

• decoding the first encoding data to generate a first decoded image signal;
• enlarging said first decoded image signal to generate an enlarged decoded image signal;
• and
• making a reference to motion information indicating a motion between frames of the image signal that specifies motion compensation decoding processing in generation of a second decoded image signal, said motion information being included in said second encoding data, subjecting said enlarged decoded image signal to a motion compensation prediction to generate a first prediction signal, subtracting said first prediction signal from said enlarged decoded image signal to generate a first prediction error signal, and adaptably regulating decoding processing of a decoded prediction error signal for a decoded image of said second encoding data based upon said first prediction error signal.