Particular image area partitioning apparatus and method, and program for causing computer to perform particular image area partitioning processing

A tangible computer-readable medium comprising a program for causing a computer to perform:

• processing for detecting whether or not a particular image is included in an image represented by image data applied from a storage device;
• processing for setting, when the particular image is detected, a plurality of projection information creating windows having a predetermined shape radially from an arbitrary point represented by the image data including the detected particular image, and creating, with respect to each of image portions within the set plurality of projection information creating windows, projection information obtained by adding pixel information for each unit pixel position in the radial positions from the arbitrary point, wherein each of the plurality of projection information creating windows has a width along the radial direction and a height along the radial direction, and the addition of the pixel information adds pixel information in a vertical direction along the height within the set plurality of projection information creating windows;
• processing for determining, with respect to each of the image portions within the plurality of projection information creating windows, a boundary position between the particular image and an image other than the particular image on the basis of the created projection information for each unit pixel position;
• and
• processing for determining a particular image area by connecting the determined plurality of boundary positions adjacent to one another.

A particular image area partitioning apparatus comprising:

• a projection information creation device for setting a plurality of projection information creating windows each having such a predetermined shape that its one end is positioned at an arbitrary point on a particular image included in an image represented by applied image data and the other end is positioned on an image other than the particular image radially from the arbitrary point, and creating projection information obtained by adding, with respect to each of image portions within the set plurality of projection information creating windows, pixel information for each unit pixel position in the radial directions from the arbitrary point, wherein each of the plurality of projection information creating windows has a width along the radial direction and a height perpendicular to the radial direction, and the addition of the pixel information adds pixel information in a vertical direction along the height within the set plurality of projection information creating windows;
• a boundary position determination device for determining, with respect to each of the image portions within the plurality of projection information creating windows, a boundary position between the particular image and the image other than the particular image on the basis of the projection information for each unit pixel position obtained by the projection information creation device;
• and
• a particular area determination device for determining a particular image area by connecting the plurality of boundary positions, adjacent to one another, determined by the boundary position determination device.

A tangible computer-readable medium comprising a program for causing a computer to perform:

• projection information creation processing for setting a plurality of projection information creating windows each having such a predetermined shape that its one end is positioned at an arbitrary point on a particular image included in an image represented by applied image data and the other end is positioned on an image other than the particular image radially from the arbitrary point, and creating, with respect to each of image portions within the set plurality of projection information creating windows, projection information obtained by adding pixel information for each unit pixel position in the radial directions from the arbitrary point, wherein each of the plurality of projection information creating windows has a width along the radial direction and a height perpendicular to the radial direction, and the addition of the pixel information adds pixel information in a vertical direction along the height within the set plurality of projection information creating windows;
• boundary position determination processing for determining, with respect to each of the image portions within the plurality of projection information creating windows, a boundary position between the particular image and the image other than the particular image on the basis of the created projection information for each unit pixel position;
• and
• particular area determination processing for determining a particular image area by connecting the determined plurality of boundary positions adjacent to one another.