graded alpha channel

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Simon M Hart (simon.hart++at++nottingham.ac.uk)
Fri, 29 May 1998 09:31:06 +0100

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/









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/

 



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