| 摘要 |
<p>A method of arbitrary image resolution conversion takes an original print ready image at a first resolution and orientation and simulates printing of that image by creating a representation of a page at a particular resolution and orientation using a nonlinear spot model for the reconstruction function (100). The image is then sampled with an aperture that corresponds to the desired output (120,130,160). The image data, which may be definable at several bits per pixel, is then made print-ready (140) by reducing the number of bits defining each pixel to a valid output state. The reduction step is accomplished through error diffusion methods (150) that maintain the local area gray density level. Since the reconstruction model is nonlinear, the spot model more closely emulates the actual printed dot and reduces artifacts in the printed image, namely moire. <IMAGE></p> |
