set scale in z axis in 3D surface plot

[sharmistha paul]

I did 3D surface plot in two of my images from 8 bit CCD
Hi everybody,

I did 3D surface plot in two of my images from 8 bit CCD camera. I use display colors in LUT. But I couldn't set scale in Z axis which is the height for the image.  I'd like to campare the heights of the two images from this 3D plot.

So I went to documentation of ImageJ for help. I found there 'The luminance of an image is interpreted as height for the plot.' Now my question is how can I scale the luminance? What is it's unit? Is it start 0 and end 255?

Can anybody give me idea?

Thank you all.

Sharmistha Paul


       
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[David Hovis]

You can set the z-scale using brightness and contrast.  The full z-
scale will be (Max-Min).  Your data will get downsampled to 256 levels.

I do this all the time.

--David

On Aug 31, 2007, at 12:04 PM, sharmistha paul <[hidden email]
 > wrote:

> I did 3D surface plot in two of my images from 8 bit CCD
> Hi everybody,
>
> I did 3D surface plot in two of my images from 8 bit CCD camera. I  
> use display colors in LUT. But I couldn't set scale in Z axis which  
> is the height for the image.  I'd like to campare the heights of the  
> two images from this 3D plot.
>
> So I went to documentation of ImageJ for help. I found there 'The  
> luminance of an image is interpreted as height for the plot.' Now my  
> question is how can I scale the luminance? What is it's unit? Is it  
> start 0 and end 255?
>
> Can anybody give me idea?
>
> Thank you all.
>
> Sharmistha Paul
>
>
>
> ____________________________________________________________________________________

 

> Building a website is a piece of cake. Yahoo! Small Business gives  
> you all the tools to get online.
> http://smallbusiness.yahoo.com/webhosting