Method and apparatus for converting data, method and apparatus for inverse converting data, and recording medium

A data converting method for converting at least part of an expression format of input data containing at least one access unit containing a plurality of data components per pixel, the method comprising:

• setting a predetermined access unit of the input data, as an access unit to be processed, and segmenting the predetermined access unit into at least one block;
• generating, on a per analysis block basis, a basis for converting an expression format of each of the plurality of data components by respectively setting, as at least one analysis block, the at least one segmented block, and performing a main component analysis on the plurality of data components on a per at least one analysis block basis, wherein the main component analysis comprises averaging position vectors and calculating a difference vector and mean value therefrom;
• converting the expression format of each of the plurality of data components per pixel forming the block to be processed by successively setting, as at least one block to be processed, the at least one segmented block, and by using a predetermined one of at least one basis generated in the analyzing step;
• and
• vectorizing by generating an N-dimensional first vector having values of N data components (N is an integer equal to 1 or larger) as element values thereof per pixel, on every M pixels (M is an integer equal to 1 or larger) in the block to be processed, by successively setting, as the block to be processed on a one-by-one basis, the at least one segmented block,
• wherein the generating the basis for converting generates the basis of the block to be analyzed by performing the main component analysis on the M first vectors generated by the vectorizing when the block to be analyzed becomes the block to be processed.

A non-transitory recording medium storing a computer program for causing a computer to perform a data converting method of converting at least part of an expression format of input data containing at least one access unit containing a plurality of data components per pixel, the data converting method comprising:

• setting a predetermined access unit of the input data, as an access unit to be processed, and segmenting the predetermined access unit into at least one block;
• generating, on a per analysis block basis, a basis for converting an expression format of each of the plurality of data components by respectively setting, as at least one analysis block, the at least one segmented block, and performing a main component analysis on the plurality of data components on a per at least one analysis block basis, wherein the main component analysis comprises averaging position vectors and calculating a difference vector and mean value therefrom;
• converting the expression format of each of the plurality of data components per pixel forming the block to be processed by successively setting, as at least one block to be processed, the at least one segmented block, and by using a predetermined one of at least one basis generated in the analyzing step;
• and
• vectorizing by generating an N-dimensional first vector having values of N data components (N is an integer equal to 1 or larger) as element values thereof per pixel, on every M pixels (M is an integer equal to 1 or larger) in the block to be processed, by successively setting, as the block to be processed on a one-by-one basis, the at least one segmented block,
• wherein the generating the basis for converting generates the basis of the block to be analyzed by performing the main component analysis on the M first vectors generated by the vectorizing when the block to be analyzed becomes the block to be processed.

A data inverse converting apparatus in a system in which a predetermined first access unit is set as an access unit to be processed out of original data containing at least one first access unit containing a plurality of data components per pixel, and the first access unit to be processed is segmented into at least one block;

• the at least one segmented block is successively set as at least one analysis block, a main component analysis is performed on each of the plurality of data components on a per at least one analysis block basis, a basis for converting an expression format of each of the plurality of data components is generated on a per analysis block basis, wherein the main component analysis comprises averaging position vectors and calculating a difference vector and mean value therefrom;
• and
• the at least one segmented block is successively set as a block to be processed, the expression format of each of the plurality of data components per pixel forming the block to be processed is converted using a predetermined one of at least one generated basis, a second access unit containing the plurality of data components per pixel in the converted expression format is generated, and the data inverse converting apparatus receives input data containing the basis being input as part of the input data, the basis being used to generate the second access unit;
• the data inverse converting apparatus comprises:
• separating means for separating the input data into the second access unit and the basis;
• and
• inverse converting means for inverse converting, using the separated basis, the expression format of the plurality of data components per pixel forming the separated second access unit.

A data inverse converting method of a data inverse converting apparatus in a system in which a predetermined first access unit is set as an access unit to be processed out of original data containing at least one first access unit containing a plurality of data components per pixel, and the first access unit to be processed is segmented into at least one block;

• the at least one segmented block is successively set as at least one analysis block, a main component analysis is performed on each of the plurality of data components on a per at least one analysis block basis, and a basis for converting an expression format of each of the plurality of data components is generated on a per analysis block basis, wherein the main component analysis comprises averaging position vectors and calculating a difference vector and mean value therefrom;
• and
• the at least one segmented block is successively set as a block to be processed, the expression format of each of the plurality of data components per pixel forming the block to be processed is converted using a predetermined one of at least one generated basis, a second access unit containing the plurality of data components per pixel in the converted expression format is generated, and the data inverse converting apparatus receives input data containing the basis being input as part of the input data, the basis being used to generate the second access unit;
• the data inverse converting method comprises:
• separating the input data into the second access unit and the basis;
• and
• inverse converting, using the separated basis, the expression format of the plurality of data components per pixel forming the separated second access unit.

A non-transitory recording medium storing a computer program for causing a computer to perform a data inverse converting method of a data inverse converting apparatus in a system in which a predetermined first access unit is set as an access unit to be processed out of original data containing at least one first access unit containing a plurality of data components per pixel, and the first access unit to be processed is segmented into at least one block;

• the at least one segmented block is successively set as at least one analysis block, a main component analysis is performed on each of the plurality of data components on a per at least one analysis block basis, and a basis for converting an expression format of each of the plurality of data components is generated on a per analysis block basis, wherein the main component analysis comprises averaging position vectors and calculating a difference vector and mean value therefrom;
• and
• the at least one segmented block is successively set as a block to be processed, the expression format of each of the plurality of data components per pixel forming the block to be processed is converted using a predetermined one of at least one generated basis, a second access unit containing the plurality of data components per pixel in the converted expression format is generated, and the data inverse converting apparatus receives input data containing the basis being input as part of the input data, the basis being used to generate the second access unit;
• the data inverse converting method comprises:
• separating the input data into the second access unit and the basis;
• and
• inverse converting, using the separated basis, the expression format of the plurality of data components per pixel forming the separated second access unit.

A data inverse converting apparatus in a system in which a predetermined access unit is set as an access unit to be processed out of original data containing at least one access unit containing a plurality of data components per pixel, and the access unit to be processed is segmented into at least one block;

• the at least one segmented block is successively set as at least one analysis block, a main component analysis is performed on each of the plurality of data components on a per at least one analysis block basis, and a basis for converting an expression format of each of the plurality of data components is generated on a per analysis block basis, wherein the main component analysis comprises averaging position vectors and calculating a difference vector and mean value therefrom;
• and
• the at least one segmented block is successively set as a block to be processed, the expression format of each of the plurality of data components per pixel forming the block to be processed is converted using a predetermined one of at least one generated basis, a data group containing the plurality of data components per pixel in the converted expression format is encoded, at least one unit of encoded data respectively corresponding to the at least one block is obtained, and the inverse converting apparatus receives input data containing the basis being input as part of the input data, the basis being used to generate and being associated with the at least one unit of encoded data;
• the data inverse converting apparatus comprises:
• separating means for separating the input data into the at least one unit of encoded data and the basis associated with the at least one unit of encoded data;
• and
• inverse converting means for successively setting the at least one separated unit of encoded data as a unit of encoded data to be processed one by one, for decoding the unit of encoded data to be processed, and for inverse converting, using the basis associated with the unit of encoded data to be processed from among the bases separated from the input data, the expression format of the plurality of data components per pixel forming the data group obtained as a result of decoding.

A data inverse converting method of a data inverse converting apparatus in a system in which a predetermined access unit is set as an access unit to be processed out of original data containing at least one access unit containing a plurality of data components per pixel, and the access unit to be processed is segmented into at least one block;

• the at least one segmented block is successively set as at least one analysis block, a main component analysis is performed on each of the plurality of data components on a per at least one analysis block basis, and a basis for converting an expression format of each of the plurality of data components is generated on a per analysis block basis, wherein the main component analysis comprises averaging position vectors and calculating a difference vector and mean value therefrom;
• and
• the at least one segmented block is successively set as a block to be processed, the expression format of each of the plurality of data components per pixel forming the block to be processed is converted using a predetermined one of at least one generated basis, a data group containing the plurality of data components per pixel in the converted expression format is encoded, at least one unit of encoded data respectively corresponding to the at least one block is obtained, and the inverse converting apparatus receives input data containing a basis being input as part of the input data, the basis being used to generate and being associated with the at least one unit of encoded data;
• the data inverse converting method comprises:
• separating the input data into the at least one unit of encoded data and the basis associated with the at least one unit of encoded data;
• and
• successively setting the at least one separated unit of encoded data as a unit of encoded data to be processed one by one, decoding the unit of encoded data to be processed, and inverse converting, using the basis associated with the unit of encoded data to be processed from among the bases separated from the input data, the expression format of the plurality of data components per pixel forming the data group obtained as a result of decoding.

A non-transitory recording medium storing a computer program for causing a computer to perform a data inverse converting method of a data inverse converting apparatus in a system in which a predetermined access unit is set as an access unit to be processed out of original data containing at least one access unit containing a plurality of data components per pixel, and the access unit to be processed is segmented into at least one block;

• the at least one segmented block is successively set as at least one analysis block, a main component analysis is performed on each of the plurality of data components on a per at least one analysis block basis, and a basis for converting an expression format of each of the plurality of data components is generated on a per analysis block basis, wherein the main component analysis comprises averaging position vectors and calculating a difference vector and mean value therefrom;
• and
• the at least one segmented block is successively set as a block to be processed, the expression format of each of the plurality of data components per pixel forming the block to be processed is converted using a predetermined one of at least one generated basis, a data group containing the plurality of data components per pixel in the converted expression format is encoded, at least one unit of encoded data respectively corresponding to the at least one block is obtained, and the inverse converting apparatus receives input data containing the basis being input as part of the input data, the basis being used to generate and being associated with the at least one unit of encoded data;
• the data inverse converting method comprises:
• separating the input data into the at least one unit of encoded data and the basis associated with the at least one unit of encoded data;
• and
• successively setting the at least one separated unit of encoded data as a unit of encoded data to be processed one by one, decoding the unit of encoded data to be processed, and inverse converting, using the basis associated with the unit of encoded data to be processed from among the bases separated from the input data, the expression format of the plurality of data components per pixel forming the data group obtained as a result of decoding.

A data converting apparatus, comprising:

• a segmentor operable to set a predetermined access unit, as an access unit to be processed, out of input data containing at least one access unit containing a plurality of data components per pixel, and to segment the predetermined access unit into at least one block;
• an analyzer operable to generate, on a per analysis block basis, a basis for converting an expression format of each of the plurality of data components by respectively setting, as at least one analysis block, the at least one segmented block, and to perform a main component analysis on the plurality of data components on a per at least one analysis block basis, wherein the main component analysis comprises averaging position vectors and calculating a difference vector and mean value therefrom;
• a converter operable to convert the expression format of each of the plurality of data components per pixel forming the block to be processed, by successively setting, as at least one block to be processed, the at least one segmented block, and by using a predetermined one of at least one basis generated by the analyzer;
• and
• a vectorizer to generate an N-dimensional first vector having values of N data components (N is an integer equal to 1 or larger) as element values thereof per pixel, on every M pixels (M is an integer equal to 1 or larger) in the block to be processed, by successively setting, as the block to be processed on a one-by-one basis, the at least one segmented block,
• wherein the analyzer generates the basis of the block to be analyzed by performing the main component analysis on the M first vectors generated by the vectorizer when the block to be analyzed becomes the block to be processed.

A data inverse converting apparatus in a system in which a predetermined first access unit is set as an access unit to be processed out of original data containing at least one first access unit containing a plurality of data components per pixel, and the first access unit to be processed is segmented into at least one block;

• the at least one segmented block is successively set as at least one analysis block, a main component analysis is performed on each of the plurality of data components on a per at least one analysis block basis, and a basis for converting an expression format of each of the plurality of data components is generated on a per analysis block basis, wherein the main component analysis comprises averaging position vectors and calculating a difference vector and mean value therefrom;
• and
• the at least one segmented block is successively set as a block to be processed, the expression format of each of the plurality of data components per pixel forming the block to be processed is converted using a predetermined one of at least one generated basis, a second access unit containing the plurality of data components per pixel in the converted expression format is generated, and the data inverse converting apparatus receives input data containing the basis being input as part of the input data, the basis being used to generate the second access unit;
• the data inverse converting apparatus comprises:
• a separator operable to separate the input data into the second access unit and the basis;
• and
• an inverter operable to inverse convert, using the separated basis, the expression format of the plurality of data components per pixel forming the separated second access unit.

A data inverse converting apparatus in a system in which a predetermined access unit is set as an access unit to be processed out of original data containing at least one access unit containing a plurality of data components per pixel, and the access unit to be processed is segmented into at least one block;

• the at least one segmented block is successively set as at least one analysis block, a main component analysis is performed on each of the plurality of data components on a per at least one analysis block basis, and a basis for converting an expression format of each of the plurality of data components is generated on a per analysis block basis, wherein the main component analysis comprises averaging position vectors and calculating a difference vector and mean value therefrom;
• and
• the at least one segmented block is successively set as a block to be processed, the expression format of each of the plurality of data components per pixel forming the block to be processed is converted using a predetermined one of at least one generated basis, a data group containing the plurality of data components per pixel in the converted expression format is encoded, at least one unit of encoded data respectively corresponding to the at least one block is obtained, and the inverse converting apparatus receives input data containing the basis being input as part of the input data, the basis being used to generate and being associated with the at least one unit of encoded data;
• the data inverse converting apparatus comprises:
• a separator operable to separate the input data into the at least one unit of encoded data and the basis associated with the at least one unit of encoded data;
• and
• an inverter operable to successively set the at least one separated unit of encoded data as a unit of encoded data to be processed one by one, to decode the unit of encoded data to be processed, and to inverse convert, using the basis associated with the unit of encoded data to be processed from among the bases separated from the input data, the expression format of the plurality of data components per pixel forming the data group obtained as a result of decoding.