Re: Opening image with big file size

Posted by Glen MacDonald-2 on Aug 20, 2010; 5:43pm
URL: http://imagej.273.s1.nabble.com/Opening-image-with-big-file-size-tp3687203p3687210.html

Are you converting the image to jpeg?  The file size in the directory is the compressed size, but files will open to the original size.  You will need to remove pixels/voxels by cropping or sub-sampling.  If bit depth is > 8-bits then cut file size by reducing to 8-bits.  If multi-channel, reduce channel number.  Or buy more memory.

The best approach will depend on specifics of your files and their application.  
Glen

Glen MacDonald
Core for Communication Research
Virginia Merrill Bloedel Hearing Research Center
Box 357923
University of Washington
Seattle, WA 98195-7923  USA
[phone]
[hidden email]


On Aug 20, 2010, at 10:30 AM, Donny George wrote:

> Hello
>
> I have rather weird situation. I have certain images which have size of
> around 13 MB. Since working on these images is time consuming I reduced the
> file size to around 1 MB. But once I try to open this new image, its open
> the old image and the display information shows 13 MB again. I had assumed
> that this was probably associated with the method i used to reduce the file
> size (i used photoshop). So now i tried many other softwares to do the same
> task of reducing file size. And tried opening them but it all somehow
> displays the old 13 MB image. I also tried updating the ImageJ version. I
> cant really figure out why this is so. someone has any idea why this happens
> ?
>
>
> Regards
> Donny
>
>
>
>
> --
> Donny George