imgworks and Greyscale TIFF

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Article #70

#70

From: Guy Brooker
Date: Fri, 08 Jan 1993 10:48

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Perhaps this is a bug in the ImageVision Library. If you load a grey
scale Tiff into imgworks, and save it as an SGI file, one gets garbage
out. imgworks seems to consider it is working with a colour dataset rather
than monochrome, as various operations behave in a bizare manner. Infact
loading and manipulating the grey scale image, after working with a colour
tiff, causes imgworks to crash.

A workaround is to restart before using the grey scale image, immediately
use the function 'Colour to Greyscale' which seems to invert the image (?),
then 'Invert' to return to normal. From then on its OK, and recognised as
Grey Scale. Saveing as an SGI image then works correctly....

Guy

-- 

-------------------------------------        	Guy Brooker
Internet: guy@wm.estec.esa.nl        		European Space Research and
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Mail	: ESTEC JW/WMS, Keplerlaan 1, 2200AG NOORDWIJK, The Netherlands

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Newsgroups: comp.sys.sgi.bugs
Path: arc1-ca.pugleaf.net!sparky!uunet!mcsun!sun4nl!estwmz.wm.estec.esa.nl!guy
From: guy@wmsg02.wm.estec.esa.nl (Guy Brooker)
Subject: imgworks and Greyscale TIFF
Message-ID: <C0J7DL.EGq@wm.estec.esa.nl>
Sender: news@wm.estec.esa.nl
Organization: ESA/Estec/WMS, Noordwijk, The Netherlands
Date: Fri, 8 Jan 1993 10:48:56 GMT
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