photo manipulation

[Paulo Petry]

Folks,

You can use photoshop, transforming grayscale in rgb and them modulating each color chanel and adjusting hue ans saturation. I do this to false color x-rays and it works like a charm. In case of the x-ray, you have to invert the image. Thus for aech gray scale image there might be a different approach to render the best false coloring.

Best Fishes,

Paulo


---- David Orlovich <david.orlovich at BOTANY.OTAGO.AC.NZ> wrote:
> Paul et al.
>
> Year's ago I used NIH Image to put false colours on SEMs.  It worked
> by allowing the use to change the colour table for the image, so that
> instead of going from black to white through the grey scales, it
> would allow you to go from (say) red to blue through the colours of
> the rainbow.  You could then scroll the colour table so that it would
> start (assign to black) any colour you want.  I think that will give
> you enough freedom to do what you want.  There were different colour
> tables to assign, so there were lots of pretty effects you could do.
>
> I see that you can still get NIH Image at the following URL (it's
> free, and it a Mac program, and also there is a Java version):
>
> http://rsb.info.nih.gov/nih-image/
>
> As I say, it was years ago (perhaps late 1980s - early 1990s) that I
> was doing this, but I'm sure it is still possible with that program
> and from memory it was easy.
>
> Cheers, David.
>
> On 25/03/2006, at 8:56 AM, Fabio Moretzsohn wrote:
>
> > Paul
> >
> > Some people color monochrome (grayscale) SEM or TEM photos in
> > Photoshop (or
> > similar) to emphasize a certain structure of interest, or just
> > because it
> > looks artistic. There are different ways to colorize a black and white
> > photo, and maybe there are specialized software for this purpose.
> >
> > A researcher at the University of Hawaii, Tina Carvalho does some nice
> > artistic colorizations of SEM and TEM micrographs colorized in
> > Photoshop:
> > http://www.pbrc.hawaii.edu/microangela/
> >
> > My two cents.
> >
> > Fabio
> >
> > -------------------------------------------------
> > Fabio Moretzsohn, Ph.D.
> > Post Doctoral Research Associate
> > Harte Research Institute of Gulf of Mexico Studies
> > Texas A&M University-Corpus Christi
> > 6300 Ocean Drive, Unit 5869
> > Corpus Christi, TX 78412-5869
> > Phone: (361) 825-3230
> > Fax: (361) 825-2050
> > fabio at falcon.tamucc.edu
> >
> >
> >
> > ----- Original Message -----
> > From: "Paul E. Hargraves" <pharg at GSO.URI.EDU>
> > To: <TAXACOM at LISTSERV.NHM.KU.EDU>
> > Sent: Friday, March 24, 2006 11:07 AM
> > Subject: [TAXACOM] photo manipulation
> >
> >
> >> Taxacomers:
> >> Changing the recent threads abruptly, I am wrestling with a problem
> >> I'm sure others have dealt with.  One often sees former black/white
> >> photos reproduced in various science magazines in blazing color, esp.
> >> SEM & TEM photos.  I assume this is done with Photoshop in some way.
> >> Can someone give details on how this is done?
> >> PEH
> >> --
> >> Paul E. Hargraves
> >> "Schau auf zu den Sternen, hab acht auf die Gassen" [-W. Raabe,
> >> 1831-1910]
> >> "Eamus, O Celtae; Eamus, O Tibialia rubentia" [anonymous, 64 B.C.]
>
> Dr David Orlovich,
> Senior Lecturer in Botany.
>
> Department of Botany,
> University of Otago,
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