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