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DCS Vector output of JPEG-compressed images can result in lower image quality


Product

  Prinergy Connect 2.1 ; Prinergy Direct 2.1 ; Prinergy Access 2.1 ; Prinergy Powerpack 2.1 ; Prinergy Satellite

Platform

 

Operating system

 


Error

 


Symptoms

 

A JPEG-compressed image has noticable image quality degradation after processing through the Vector JTP to DCS.


Cause

  Any JPEG-compressed image has inherent image quality degradation, and will have further image quality degradation after processing through the Vector JTP to DCS. In most cases, this degradation is not noticeable. However, in some cases, depending on image characteristics, it might be noticeable.

Solution

 

Set compression in Distiller to ZIP instead of JPEG, or create a Pitstop Action to convert all images to ZIP compression. Note that you cannot change compression of images that are part of a PDF form. If the image is contained in a form, you will have to re-distill the source PostScript with ZIP as the compression setting.

Permanent fix:


See also

 


Keywords

 

output, vector output


Technical contact(s)
 

James Robson

Submitted by
 

James Robson

Date submitted
 

10 Feb 2003


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