Reading images of size >1gb on 32bit System

Sebastian Bludau — Fri, 16 May 2008 08:18:02 -0400

Hi,

i would like to read tif images with a possible file size
larger than 1gb. If i use feature('memstats') the largest
continuous memory block on my system is about 900mb.

Is there a easy way to read those images without having the
"out of memory" problem on my system.

Is it possible to resize the image while reading it, so that
the image fits into my memory?

I thought about
[...] = IMREAD(...,'PixelRegion',{ROWS, COLS})
Maybe i can read parts of the image, resize these parts and
put the resized part into a new matrix which should contain
the final rescaled image. (Hope there is a more easy way to
handle my images)

Thx for any ideas

Sebastian

Re: Reading images of size >1gb on 32bit System

ImageAnalyst — Fri, 16 May 2008 11:04:53 -0400

On May 16, 4:18=A0am, "Sebastian Bludau" <s.blu...@fz-juelich.de> wrote:
> Hi,
>
> i would like to read tif images with a possible file size
> larger than 1gb. If i use feature('memstats') the largest
> continuous memory block on my system is about 900mb.
>
> Is there a easy way to read those images without having the
> "out of memory" problem on my system.
>
> Is it possible to resize the image while reading it, so that
> the image fits into my memory?
>
> I thought about
> [...] =3D IMREAD(...,'PixelRegion',{ROWS, COLS})
> Maybe i can read parts of the image, resize these parts and
> put the resized part into a new matrix which should contain
> the final rescaled image. (Hope there is a more easy way to
> handle my images)
>
> Thx for any ideas
>
> Sebastian
----------------------------------------------------------
Sebastian:
For $70 I just got 2 GB of additional memory from Dell. You could try
that. Are you on Windows XP? Have you also given the /3GB option in
the boot.ini file a try (Google it).
Regards,
ImageAnalyst

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Reading images of size >1gb on 32bit System

Re: Reading images of size >1gb on 32bit System