Patent ID: 6011878
Filing Date: 2000-01-04
Classification: G06T,H04N

Abstract:
An image processing apparatus comprising:image input means for entering multilevel image data in which one pixel is represented by n-levels;filter means for applying spatial filtering processing to the multilevel image data entered by said image input means;processing means for processing the image data filtered by said filter means in such a manner that each pixel of the image data is subjected to an m-level conversion (where 2<m<n); anddot arranging means for converting the image data, which has been converted to m-level image data by said processing means, to an array of dots having a resolution higher than resolution of the image data;wherein said dot arranging means arranges the image data in such a manner that patterns for even-numbered pixels and patterns for odd-numbered pixels are symmetrical, and said dot arrangement means converts the image data, which has been converted to m-levels, to a dot array of m-1 dots.