Bug #20677 for Imager: Imager's scale() loses detail in comparison to pnmscale

Tue Jul 25 10:58:20 2006 TONYC [...] cpan.org - Ticket created

Subject:	Imager's scale() loses detail in comparison to pnmscale
Date:	Wed, 26 Jul 2006 00:57:17 +1000
To:	bug-Imager [...] rt.cpan.org
From:	tonyc [...] cpan.org

Using the same source image, Imager loses some detail when scaling in comparison to pnmscale. pngtopnm <kscdisplay.png | pnmscale -xsize=100 | pnmtopng >~/play/scale/pnm.png perl -Mblib -MImager -e '$im = Imager->new; $im->read(file=>shift) or die; $sc = $im->scale(xpixels => 100) or die; $sc->write(file=>shift) or die' kscdisplay.png ~/play/scale/imager.png

Download kscdisplay.png
image/png 573.9k

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Download imager.png
image/png 20.4k

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Download pnm.png
image/png 18.8k

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Thu Aug 31 09:28:04 2006 TONYC [...] cpan.org - Taken

Thu Aug 31 09:30:06 2006 TONYC [...] cpan.org - Correspondence added

added qtype of 'mixing' to the scale() method. This adapt's pnmscale's scale mechanism, and achieves the same detail. It's also a lot faster than qtype of 'normal'.

Thu Aug 31 09:30:08 2006 TONYC [...] cpan.org - Status changed from 'new' to 'open'

Mon Sep 18 19:59:31 2006 TONYC [...] cpan.org - Correspondence added

fixed in 0.54

Mon Sep 18 19:59:33 2006 TONYC [...] cpan.org - Status changed from 'open' to 'resolved'