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Re: reading/writing pictures

• To: mathgroup at smc.vnet.net
• Subject: [mg5290] Re: reading/writing pictures
• From: haberndt at dnai.com (Harald Berndt)
• Date: Sat, 23 Nov 1996 01:44:33 -0500
• Organization: DNAI ( Direct Network Access )
• Sender: owner-wri-mathgroup at wolfram.com

In article <56d4hj$lnd at dragonfly.wolfram.com>, "Joco Alberto Teixeira
Vieira Gomes" <jagomes at mail.telepac.pt> wrote:

> Eric von Lieres <lieres at studm.hrz.uni-siegen.de> wrote in article
> <56af1i$j8m at dragonfly.wolfram.com>...
> > I wrote a little program to show wavelet transforms in two dimensions.
> > Now it would be nice to read some pictures into Mathematica in order
> > to manipulate them. The Problem is:
> > 
> > There is a bunch of file-formats e.g. BMP, JPEG, ... and I do not know
> > anything about them. I just want to transform a black and white
> > picture into a Mathematica List of grey-scales and vice versa. What
> > can I do?
> > 
> > I do appreciate every hint.
> > 
> > Eric         

Eric:

You can cut and paste a picture into a Mathematica cell. Select that cell
and choose "Convert to InputForm" from the cell menu. The raster of values
making up the picture is a part of the InputForm. This is explained in
various articles and books. I believe you'll find details in The Book,
too.

-- 
Harald Berndt, Ph.D.                            Research Specialist,
Voice: 510-652-5974                                      Consultant
FAX:   510-215-4299