Bug #16161 for Image-Info: netpbm images may have more than 8bit/channel

Mon Nov 28 11:31:30 2005 SREZIC [...] cpan.org - Ticket created

Subject:

netpbm images may have more than 8bit/channel

The attached file is the header of a ppm image with 16bits/channel (here: 48 bits/pixel). The maxvalue is here 65535 instead of the normally expected 255. This also means that SamplerPerPixel should be set to 6 instead of 3 in this case, and BitsPerSample should be 16 instead of 8.

Download 16.ppm
image/x-portable-pixmap 25b

Sat Jan 28 05:37:52 2006 TELS [...] cpan.org - Taken

Sat Jan 28 07:20:29 2006 TELS [...] cpan.org - Correspondence added

On Mon Nov 28 11:31:30 2005, SREZIC wrote: Show quoted text

> The attached file is the header of a ppm image with 16bits/channel > (here: 48 bits/pixel). The maxvalue is here 65535 instead of the > normally expected 255. This also means that SamplerPerPixel should > be set to 6 instead of 3 in this case, and BitsPerSample should be > 16 instead of 8.

Thanx, patched this for 1.17. Can I include the image in the testsuite? Best wishes, Tels

Sat Jan 28 07:20:32 2006 The RT System itself - Status changed from 'new' to 'open'

Sat Jan 28 07:47:33 2006 SREZIC [...] cpan.org - Correspondence added

On Sa. 28. Jan. 2006, 07:20:29, TELS wrote: Show quoted text

> On Mon Nov 28 11:31:30 2005, SREZIC wrote:

> > The attached file is the header of a ppm image with 16bits/channel > > (here: 48 bits/pixel). The maxvalue is here 65535 instead of the > > normally expected 255. This also means that SamplerPerPixel should > > be set to 6 instead of 3 in this case, and BitsPerSample should be > > 16 instead of 8.

> > Thanx, patched this for 1.17. Can I include the image in the testsuite? >

The sample contained just an PPM header, not a real complete image. Here's a new attachment with a complete image (4x1 pixels, edited in Emacs :-) Feel free to include it in your test suite. Regards, Slaven

Download 16b.ppm
application/octet-stream 37b

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Sat Jan 28 07:56:51 2006 nospam-abuse [...] bloodgate.com - Correspondence added

Subject:	Re: [rt.cpan.org #16161] netpbm images may have more than 8bit/channel
Date:	Sat, 28 Jan 2006 13:55:02 +0100
To:	bug-Image-Info [...] rt.cpan.org
From:	Tels <nospam-abuse [...] bloodgate.com>

Moin, On Saturday 28 January 2006 13:47, Slaven_Rezic via RT wrote: Show quoted text

> <URL: http://rt.cpan.org/Ticket/Display.html?id=16161 > > > On Sa. 28. Jan. 2006, 07:20:29, TELS wrote:

> > On Mon Nov 28 11:31:30 2005, SREZIC wrote:

> > > The attached file is the header of a ppm image with 16bits/channel > > > (here: 48 bits/pixel). The maxvalue is here 65535 instead of the > > > normally expected 255. This also means that SamplerPerPixel > > > should be set to 6 instead of 3 in this case, and BitsPerSample > > > should be 16 instead of 8.

> > > > Thanx, patched this for 1.17. Can I include the image in the > > testsuite?

> > The sample contained just an PPM header, not a real complete image. > Here's a new attachment with a complete image (4x1 pixels, edited in > Emacs :-) Feel free to include it in your test suite.

Thanx, to late for 1.17 but will be part of 1.18 :) Best wishes, Tels -- Signed on Sat Jan 28 13:54:43 2006 with key 0x93B84C15. Visit my photo gallery at http://bloodgate.com/photos/ PGP key on http://bloodgate.com/tels.asc or per email. This email violates U.S. patent #6,756,999 <http://tinyurl.com/2vuqm>: [ [ Konsoles* ] [ Mozilla ] [ KMail ]]

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application/pgp-signature 481b

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Sun Jan 29 18:15:37 2006 TELS [...] cpan.org - TimeWorked changed from (no value) to '15'

Sun Jan 29 18:15:37 2006 TELS [...] cpan.org - Status changed from 'open' to 'resolved'

Sun Jan 29 18:15:38 2006 TELS [...] cpan.org - Fixed in 1.17 added