Image processing device, method, program and recording medium recording the program

An image processing device, comprising:

• pixel group generation means for generating a pixel group by selecting pixels until total of gradation image data value for each pixel becomes a threshold value or more;
• pixel group center of gravity determination means for determining a position of a center of gravity of the pixel group generated by said pixel group generation means;
• and
• quantized image data providing means for providing quantized image data to a pixel positioned at the center of gravity determined by said pixel group center of gravity determination means;
• wherein
• said pixel group generation means continuously selects pixels closest to the center of gravity determined by said pixel group center of gravity determination means until the total of the gradation image data value for each pixel becomes the threshold value or more, and when the total of the gradation image data value in said selected pixel group exceeds said threshold value, the exceeded amount of said gradation image data value is returned to said pixel selected last by said image group generation means.

An image processing method, comprising:

• a pixel group generation step of generating a pixel group by selecting pixels until total of gradation image data value for each pixel becomes a threshold value or more;
• a pixel group center of gravity determination step of determining a position of a center of gravity of the pixel group generated in said pixel group generation step;
• and
• a quantized image data providing step of providing quantized image data to a pixel positioned at the center of gravity determined in said pixel group center of gravity determination step;
• wherein
• said pixel group generation step generates said pixel group by continuously selecting pixels closest to the center of gravity determined in said pixel group center of gravity determination step until the total of the gradation image data value for each pixel becomes the threshold value or more.

A program for having a computer execute;

• a pixel group generation processing for generating a pixel group by selecting pixels until total of gradation image data value for each pixel becomes a threshold value or more;
• a pixel group center of gravity determination processing for determining a position of a center of gravity of the pixel group generated by said pixel group generation processing;
• and
• a quantized image data providing processing for providing quantized image data to a pixel positioned at the center of gravity determined by said pixel group center of gravity determination processing;
• wherein
• said pixel group generation processing generates said pixel group by continuously selecting pixels closest to the center of gravity determined by said pixel group center of gravity determination processing until the total of the gradation image data value for each pixel becomes the threshold value or more.

A recording medium storing a program for having a computer execute;

• a pixel group generation processing for generating a pixel group by selecting pixels until total of gradation image data value for each pixel becomes a threshold value or more;
• a pixel group center of gravity determination processing for determining a position of a center of gravity of the pixel group generated by said pixel group generation processing;
• and
• a quantized image data providing processing for providing quantized image data to a pixel positioned at the center of gravity determined by said pixel group center of gravity determination processing;
• wherein
• said pixel group generation processing generates said pixel group by continuously selecting pixels closest to the center of gravity determined by said pixel group center of gravity determination processing until the total of the gradation image data value for each pixel becomes the threshold value or more.

An image processing device, comprising:

• pixel group generation means for generating a pixel group by selecting pixels until total of gradation image data value for each pixel becomes a threshold value or more based on a first reference point for pixel selection;
• pixel group reference point determination means for determining a second reference point of the pixel group generated by said pixel group generation means;
• and
• quantized image data providing means for providing quantized image data to a pixel positioned at said second reference point determined by said pixel group reference point determination means;
• wherein
• said pixel group generation means update said first reference point and selects pixels based on this first reference point.

An image processing method, comprising:

• a pixel group generation step of generating a pixel group by selecting pixels until total of gradation image data value for each pixel becomes a threshold value or more based on a first reference point for pixel selection;
• a pixel group reference point determination step of determining a second reference point of the pixel group generated in said pixel group generation step;
• and
• a quantized image data providing step of providing quantized image data to a pixel positioned at said second reference point determined in said pixel group reference point determination step;
• wherein
• said pixel group generation step updates said first reference point and selects pixels based on this first reference point.

A program for having a computer execute;

• a pixel group generation processing for generating a pixel group by selecting pixels until total of gradation image data value for each pixel becomes a threshold value or more based on a first reference point for pixel selection;
• a pixel group reference point determination processing for determining a second reference point of the pixel group generated by said pixel group generation processing;
• and
• a quantized image data providing processing for providing quantized image data to a pixel positioned at said second reference point determined by said pixel group reference point determination processing;
• wherein
• said pixel group generation processing updates said first reference point and selects pixels based on this first reference point.

A recording medium storing a program for having a computer execute;

• a pixel group generation processing for generating a pixel group by selecting pixels until total of gradation image data value for each pixel becomes a threshold value or more based on a first reference point for pixel selection;
• a pixel group reference point determination processing for determining a second reference point of the pixel group generated by said pixel group generation processing;
• and
• a quantized image data providing processing for providing quantized image data to a pixel positioned at said second reference point determined by said pixel group reference point determination processing;
• wherein
• said pixel group generation processing updates said first reference point and selects pixels based on this first reference point.