Image processing
AssigneeCrosfield Electronics Limited
InventorsPeter W. Stansfield, Alastair Reed
Life of this patent
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Abstract
A method and apparatus for processing a screened separation comprises an analyze scanner for scanning the separation at a resolution higher than the screen ruling to generate a binary value for each high resolution pixel of the separation; a processor for generating signals representing single values for respective blocks of the high resolution pixels from the binary data in the blocks; and a descreening system to which the signals from the processor are fed, the descreening system generating signals representing a descreened version of the original separation.
Claims6
Image processing apparatus comprising analysing means for scanning an original screened colour separation at a resolution higher than the screen ruling to generate a binary value for each high resolution pixel of said separation;
- processing means for generating signals representing single values for respective blocks of said high resolution pixels from said binary values in said blocks;
- and descreening means to which said signals from said processing means are fed, said descreening means generating signals representing a descreened version of said original separation.
A method for processing a screened colour separation, the method comprising scanning said screened separation at a resolution higher than the screen ruling to generate a binary value for each high resolution pixel of said separation;
- generating signals representing single values for respective blocks of said high resolution pixels from said binary values in said blocks;
- and descreening the resultant low resolution version of said separation.
Dependencies are inferred from the claim text.