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 ImageEn Library for Delphi, C++ and .Net
 ImageEn and IEvolution Support Forum
 ImageEnVect.ZoomFilters
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klausdoege

Germany
389 Posts

Posted - Jul 05 2012 :  12:22:06  Show Profile  Reply
Hello,
if I set the ImageEnVect.ZoomFilters unequally "none",
the treatment of big pictures > 5MPixel is extremely slow.
Why the ImageEnVect.ZoomFilter influences that processes the pictures with all activities? Why not only that zoom.

Klaus
www.klausdoege.de

fab

1310 Posts

Posted - Jul 05 2012 :  14:02:52  Show Profile  Reply
Hello,
ZoomFilter specifies an interpolation filter, used when Zoom is not 100. Interpolation is a CPU intensive task, so it requires more time increasing the image size. Of course it applies to all painting activities (but Zoom must be <>100, otherwise this is a bug!).
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klausdoege

Germany
389 Posts

Posted - Jul 09 2012 :  14:14:37  Show Profile  Reply
Hello,
thank you for this info.
Now I only use zoomfilter=none, the performance is much higher through it.
Always 100% zooms, to use, is heavy to realize.

Klaus
www.klausdoege.de
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