Re: How do you read a .bmp file?

[Robert A. Macy]

Thank you for your very prompt response and URL's.  

I think I went through this before and found Imagmagic is
always missing or such.  Do remember I got some custom code
from here that allowed me to make colored .bmp images.  


I do most of the work on the Win98 
running binary octave 2.1.50a

I have an adjacent machine running WinXP Professional which
I could try running the binary 2.9.12. I don't use that
version of octave, because all my plot routines died.  

However, I could open the .bmp with it, store the data as
.txt, and then open the data file using 2.1.50a

Is that possible?  Does 2.9.12 have an easy way to read
.bmp's ?

Robert

On Fri, 28 Sep 2007 23:58:31 -0400
 "James Sherman Jr." <address@hidden> wrote:
> Have you tried the image package from octave forge?
>  Found here:
> http://octave.sourceforge.net/packages.html
> 
> You can get older versions of the packages to work with
> 2.1.50 here:
>
http://sourceforge.net/project/showfiles.php?group_id=2888&package_id=29785
> 
> I'm assuming that you still need to have the same
> requirements as the
> current build, i.e. ImageMagik installed.
> 
> James Sherman
> 
> On 9/28/07, Robert A. Macy <address@hidden> wrote:
> > I have a simple .bmp file, actually in two forms.
> >
> > Both are 512 by 512 pixels, one is RGB 24 bit format
> (?)
> > and the same gray image is in single ?? format.  Of
> course
> > the single format is 1/3 the size of the RGB image.
> >
> > Short of trashing the header, reading the file byte by
> > byte, is there some easy way to read in the pixel
> values
> > for a 512 by 512 image?
> >
> > I'm using Win98 to run octave 2.1.50a [I have to use
> 50a to
> > keep all those plotting functions.]
> >
> > Robert