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September 2009
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2009.09.15 23:31 "Re: JPEG images from Dwights sample code", by Toby Thain
On 15-Sep-09, at 6:48 PM, Kevin Myers wrote: > Brings up an interesting point regarding test images: All test images > should probably be accompanied by a text description that provides > some > details regarding what the image is *supposed* to look like. > Otherwise, it > may not be apparent to someone testing their application whether > the image > is being displayed correctly or not. I don't know whether such > descriptions > have been typically supplied or not... Or a copy in a relatively predictable file format, like PNG. :) --T > > ----- Original Message ----- > From: "Dwight Kelly" <dkelly@apago.com> > To: "Richard Nolde" <richard.nolde@cybox.com> > Cc: <tiff@lists.maptools.org> > Sent: Tuesday, September 15, 2009 17:19 > Subject: Re: [Tiff] JPEG images from Dwights sample code > > >> Richard Nolde wrote: >>> Dwight, >>> When I build the test file generator and run it with the CVS head >>> version of libtiff from a couple of weeks ago on Fedora 11, I get >>> alternating stripes of black and white bands on all the images. >>> However, the order of the bands is Black White Black White for >>> all BUT >>> the Jpeg compressed images, and in those two the order is White >>> Black >>> White Black when viewed with GraphicsMagic-1.3.6 2009-07-25-Q16. >>> >>> However, Gthumb (Gnome Image Viewer), Gimp 2.6, and Geggie >>> display all >>> the non-RGB images Black White Black White and all the RGB images >>> White Black White Black. Which is correct? >> >> Hello, monochrome and grayscale will be opposite than RGB. >> >> -- >> Dwight Kelly >> Apago, Inc. 4080 McGinnis Ferry Rd Suite 601 Alpharetta, GA 30005 >> voice:(770) 619-1884 fax:(770) 619-1885 >> email: dkelly@apago.com web: http://www.apago.com >> >> _______________________________________________ >> Tiff mailing list: Tiff@lists.maptools.org >> http://lists.maptools.org/mailman/listinfo/tiff >> http://www.remotesensing.org/libtiff/ > > _______________________________________________ > Tiff mailing list: Tiff@lists.maptools.org > http://lists.maptools.org/mailman/listinfo/tiff > http://www.remotesensing.org/libtiff/