Image processing device, image processing method, program, and integrated circuit

An image processing device comprising:

• an edge determination unit configured to determine, for each of plural pixels in a unit of processing, whether the pixel includes a predetermined edge, the plural pixels being included in image data;
• a representative pixel value storage unit configured to, for each of the plural pixels, select one of plural sub-pixels obtained by dividing the pixel, as a representative sub-pixel, and store, into a representative pixel value storage area, a representative pixel value which is a pixel value of the representative sub-pixel;
• and
• a sub-pixel value storage unit configured to store, into a sub-pixel value storage area, pixel values of two or more of the plural sub-pixels in each of pixels determined by the edge determination unit to include the predetermined edge, the two or more of the plural sub-pixels being other than the representative sub-pixel selected by the representative pixel value storage unit,
• wherein the sub-pixel value storage area stores one or more sets corresponding to N number of pixels, the one or more sets each including a pixel position and a pixel value of each sub-pixel other than the representative sub-pixel of a pixel at the pixel position, N being a natural number smaller than a total number of the plural pixels in the unit of processing for the edge determination unit.

An image processing method comprising:

• (a) determining, for each of plural pixels in a unit of processing, whether the pixel includes a predetermined edge, the plural pixels being included in image data;
• (b) for each of the plural pixels, selecting one of plural sub-pixels obtained by dividing the pixel, as a representative sub-pixel, and storing, into a representative pixel value storage area, a representative pixel value which is a pixel value of the representative sub-pixel;
• and
• (c) storing, into a sub-pixel value storage area, pixel values of two or more of the plural sub-pixels in each of pixels determined in step (a) to include the predetermined edge, the two or more of the plural sub-pixels being other than the representative sub-pixel selected in step (b),
• wherein the sub-pixel value storage area stores one or more sets corresponding to N number of pixels, the one or more sets each including a pixel position and a pixel value of each sub-pixel other than the representative sub-pixel of a pixel at the pixel position, N being a natural number smaller than a total number of the plural pixels in the unit of processing for the edge determination unit.

A non-transitory computer-readable recording medium storing a program for causing a computer to execute, for processing an image:

• (a) determining, for each of plural pixels in a unit of processing, whether the pixel includes a predetermined edge, the plural pixels being included in image data;
• (b) for each of the plural pixels, selecting one of plural sub-pixels obtained by dividing the pixel, as a representative sub-pixel, and storing, into a representative pixel value storage area, a representative pixel value which is a pixel value of the representative sub-pixel;
• and
• (c) storing, into a sub-pixel value storage area, pixel values of two or more of the plural sub-pixels in each of pixels determined in step (a) to include the predetermined edge, the two or more of the plural sub-pixels being other than the representative sub-pixel selected in step (b),
• wherein the sub-pixel value storage area stores one or more sets corresponding to N number of pixels, the one or more sets each including a pixel position and a pixel value of each sub-pixel other than the representative sub-pixel of a pixel at the pixel position, N being a natural number smaller than a total number of the plural pixels in the unit of processing for the edge determination unit.

An integrated circuit comprising:

• an edge determination unit configured to determine, for each of plural pixels in a unit of processing, whether the pixel includes a predetermined edge, the plural pixels being included in image data;
• a representative pixel value storage unit configured to, for each of the plural pixels, select one of plural sub-pixels obtained by dividing the pixel, as a representative sub-pixel, and store, into a representative pixel value storage area, a representative pixel value which is a pixel value of the representative sub-pixel;
• and
• a sub-pixel value storage unit configured to store, into a sub-pixel value storage area, pixel values of two or more of the plural sub-pixels in each of pixels determined by the edge determination unit to include the predetermined edge, the two or more of the plural sub-pixels being other than the representative sub-pixel selected by the representative pixel value storage unit,
• wherein the sub-pixel value storage area stores one or more sets corresponding to N number of pixels, the one or more sets each including a pixel position and a pixel value of each sub-pixel other than the representative sub-pixel of a pixel at the pixel position, N being a natural number smaller than a total number of the plural pixels in the unit of processing for the edge determination unit.

An image processing device comprising:

• a representative pixel value storage unit configured to, for each of plural pixels in a unit of processing, select one of plural sub-pixels obtained by dividing the pixel, as a representative sub-pixel, and store a pixel value of the representative sub-pixel into a first storage area;
• and
• a sub-pixel value storage unit configured to store, into a second storage area, pixel values of two or more of the plural sub-pixels other than the representative sub-pixel, the plural pixels being included in image data,
• wherein the second storage area stores one or more sets corresponding to N number of pixels, the one or more sets each including a pixel position and a pixel value of each sub-pixel other than the representative sub-pixel of a pixel at the pixel position, N being a natural number smaller than a total number of the plural pixels included in the unit of processing.

An image processing method comprising:

• for each of plural pixels in a unit of processing, selecting one of plural sub-pixels obtained by dividing the pixel, as a representative sub-pixel, and storing a pixel value of the representative sub-pixel into a first storage area;
• and
• storing, into a second storage area, pixel values of two or more of the plural sub-pixels other than the representative sub-pixel,
• wherein the second storage area stores one or more sets corresponding to N number of pixels, the one or more sets each including a pixel position and a pixel value of each sub-pixel other than the representative sub-pixel of a pixel at the pixel position, N being a natural number smaller than a total number of the plural pixels included in the unit of processing.

A non-transitory computer-readable recording medium storing a program for causing a computer to execute, for processing an image:

• for each of plural pixels in a unit of processing, selecting one of plural sub-pixels obtained by dividing the pixel, as a representative sub-pixel, and storing a pixel value of the representative sub-pixel into a first storage area;
• and
• storing, into a second storage area, pixel values of two or more of the plural sub-pixels other than the representative sub-pixel,
• wherein the second storage area stores one or more sets corresponding to N number of pixels, the one or more sets each including a pixel position and a pixel value of each sub-pixel other than the representative sub-pixel of a pixel at the pixel position, N being a natural number smaller than a total number of the plural pixels included in the unit of processing.

An integrated circuit comprising:

• a representative pixel value storage unit configured to, for each of plural pixels in a unit of processing, select one of plural sub-pixels obtained by dividing the pixel, as a representative sub-pixel, and store a pixel value of the representative sub-pixel into a first storage area;
• and
• a sub-pixel value storage unit configured to store, into a second storage area, pixel values of two or more of the plural sub-pixels other than the representative sub-pixel,
• wherein the second storage area stores one or more sets corresponding to N number of pixels, the one or more sets each including a pixel position and a pixel value of each sub-pixel other than the representative sub-pixel of a pixel at the pixel position, N being a natural number smaller than a total number of the plural pixels included in the unit of processing.