Patent Document ID: 20100008599
Application ID: 12497473
Patent Status: 0

Claim One:
1. A resolution converting method for converting an input image having a binary image of a dot-matrix form into an output image having a binary image represented in a dot-matrix form having an resolution equal to an integral multiple of a resolution of the input image, the resolution converting method comprising: representing a density at an arbitrary position residing between pixels of the input image as an interpolating value obtained by interpolating vicinity pixels in the input image; allotting an area of a pixel of each pixel of the output image to the pixel, in a state of overlapping an area of the output image after a resolution conversion processing is completed, on an area of the input image, in a setting that the area of the output image is shifted from the area of the input image by a minutely small quantity in a horizontal direction and a vertical direction; integrating interpolated values of an area of the input image which overlaps with the area of the pixel of each pixel of the output image; normalizing an value obtained by the integrating with respect to the area of the pixel; and determining a binary data of the pixel by comparing small and large between the value obtained by the normalizing and a predetermined value.