中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

265 records (took 0.125 seconds)

    METHOD FOR RASTERING HALF-TONE IMAGES
    11.
    发明申请
    METHOD FOR RASTERING HALF-TONE IMAGES 审中-公开
    用于扫描半色调图像的方法

    公开(公告)号：WO1983000570A1

    公开(公告)日：1983-02-17

    申请号：PCT/DE1982000158

    申请日：1982-07-29

    Applicant: GAO GESELLSCHAFT FÜR AUTOMATION UND ORGANISATION ... ,  MÜLLER, Hans ,  MAY, Stefan

    Inventor： GAO GESELLSCHAFT FÜR AUTOMATION UND ORGANISATION ...

    IPC: G03F05/24

    CPC classification number: G03F5/14 ,  B41M3/14 ,  B42D25/00 ,  B42D25/29 ,  B42D25/405 ,  B42D25/41 ,  B42D25/42 ,  B42D25/485 ,  B42D2033/14 ,  B42D2033/20 ,  B42D2035/02 ,  B42D2035/14 ,  B42D2035/16 ,  B42D2035/26 ,  G03F5/10 ,  G03F5/12 ,  G03F5/20 ,  H04N1/23 ,  H04N1/405 ,  Y10S283/901

    Abstract: According to the method for rastering half-tone images, grey values of the image are reproduced by modifying the structure density of a base raster structure selected according to the form. The attribution of the field of grey values of the half-tone image to the raster structural density reproducing said field of grey values may be fixed appropriately. In a phototechnical version of the method (Fig. 1), there is obtained a selected base raster structure (1) and from the latter enlarged raster structures are produced as negative films (9, 11). From the image to be rastered (13), there is produced, as negative films, a same number of extracts of tone values (20, 22), each of them reproducing a predetermined field of grey values of the half-tone image, fixed by means of the exposure time. The extracts of tone values (22, 20) are exposed on a support (24), with the raster structures (9, 11) of the series to which they are attributed. The support then reproduces the rastered image in a form such that the grey values portions determined by the extract of tone value are locally reproduced by the raster structural density attributed to them. There are a plurality of alternatives in the photographic technics and in the laser technics, implementing said method, which are appropriate for the rastering of half-tone images, for the production of half-tone blocks and for printing reproduction supports with images thus rastered.

    Abstract translation: 根据用于对半色调图像进行锐化的方法，通过修改根据形式选择的基本光栅结构的结构密度来再现图像的灰度值。 可以将半色调图像的灰度值的场的归属到再现所述灰度值的光栅结构密度适当地固定。 在该方法的光电版本（图1）中，获得了选定的基底光栅结构（1），并且从后者的放大的光栅结构被产生为负片（9,11）。 从要被扫描的图像（13）中，产生作为负片的相同数量的色调值提取（20,22），它们中的每一个再现半色调图像的预定灰度值域，固定 通过曝光时间。 色调值（22,20）的提取物暴露在支撑体（24）上，与其归因于其的系列的光栅结构（9,11）一起露出。 然后，支持以这样一种形式再现该纵向图像，使得由色调值提取确定的灰度值部分由归因于其的光栅结构密度本地再现。 在摄影技术和激光技术中存在多种替代方案，实现所述方法适用于对半色调图像进行划痕，用于生产半色调块和用于打印再现支持的图像。

Patent Agency Ranking