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September 2009
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2009.09.16 00:17 "Re: JPEG images from Dwights sample code", by Chris Cox
If anything, I'd accompany the test files with a small JPEG marked as a preview of what the image should look like (downsample larger images, convert to 8 bit RGB, etc.). Add a readme explaining that these are thumbnails, not exact representations. Chris On 9/15/09 4:31 PM, "Toby Thain" <toby@telegraphics.com.au> wrote: 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.