[gs-bugs] [Bug 689686] New: siscale.c contrast degradation

[bugs.ghostscript.com-bugzilla-daemon at ghostscript.com]

http://bugs.ghostscript.com/show_bug.cgi?id=689686

           Summary: siscale.c contrast degradation
           Product: Ghostscript
           Version: HEAD
          Platform: PC
        OS/Version: Windows XP
            Status: NEW
          Severity: normal
          Priority: P4
         Component: Graphics Library
        AssignedTo: leonardo at artifex.com
        ReportedBy: leonardo at artifex.com
         QAContact: gs-bugs at ghostscript.com


A recent change to siscale.c shifted 'center' to 0.5 source pixels. It causes 
the kernel center to shift between source pixels, so that an output pixel is 
always near average of 4 source ones. It causes a degradation of contrast. Need 
a better method for shifting the image in the output space.



------- You are receiving this mail because: -------
You are the QA contact for the bug, or are watching the QA contact.