Title:
【発明の名称】ベクトル形態のイメージ情報をラスタパターン上に再生する方法及びイメージを再生する装置及び該装置を使用するためのラスタジェネレータ
Document Type and Number:
Japanese Patent JP3051428
Kind Code:
B2
Abstract:
Boundaries between coloured and uncoloured image parts are reproduced on a pixel raster by determining a binary value ("coloured" or "uncoloured"), proceeding along a boundary, for adjoining pixels intersected by said boundary, said value being determined on the basis of the situation of said pixel with respect to the boundary and a carried-forward correction value. On the basis of the situation of said pixel with respect to the boundary a fractional value is calculated which is then rounded off to a binary pixel value. The rounding-off error made in such cases is processed using a prevention function for preventing allocating such binary values to the boundary pixels that visible bulges are formed on the boundary and is then carried forward to the next pixel and included in the fractional value thereof. Instances of such prevention functions are described. This procedure gives a better reproduction of lines extending obliquely over the pixel raster.
Inventors:
Maurice Lambert Martin Latzmer
Application Number:
JP17131790A
Publication Date:
June 12, 2000
Filing Date:
June 28, 1990
Export Citation:
Assignee:
Oce Netherland BV
International Classes:
B41J2/485; G06K15/02; G06K15/12; G06T11/20; G09G5/20; (IPC1-7): G06T11/00; B41J2/485; G09G5/20
Attorney, Agent or Firm:
Yoshio Kawaguchi (4 outside)