Hilko Hoffmann (hilko++at++geo.unizh.ch)
Fri, 29 May 1998 11:24:21 +0200
> Performers
>
> A simple problem in some ways:
>
> [imagefile].rgb + [greyscaleimagefile].rgb =
> [composite imagefile].rgba
>
> That is to say I want to use a greyscale image
> as the graded alpha channel for an rgba image,
> for instance for putting a graded tint on a car
> window.
>
> Does any one know of an application that is
> readily available to combine two such images to
> create an rgba file with graded alpha channel?
>
> Thanks
>
> Simon.
>
> --
> Simon Hart, BA DipArch.
> Development Manager
> CIMI
> Unit 8 William Lee Buildings
> Highfields Science Park
> University Boulevard
> Nottingham NG7 2RQ.
>
> e-mail: simon.hart++at++nottingham.ac.uk
>
> Tel: 0115 956 8997/0 Fax: 0115 956 8991
>
> Internet: http://www.cimi.nott.ac.uk/
>
>
ADOBE Photoshop for SGI is able to do such image
processing - we use it to create alpha channels.
Note: Photoshop for other platforms than SGI
doesn't know the SGI rgba image format!
Regards
Hilko
-- **************************************************************** Hilko Hoffmann Remote Sensing Laboratories; University of Zurich Winterthurerstrasse 190; CH-8057 Zurich; Switzerland Phone: +41 - 1 / 63 56519; FAX: +41 - 1 / 63 56842 mailto:hilko++at++geo.unizh.ch http://www.geo.unizh.ch/rsl1/lvg/research/ ****************************************************************
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