Re: query on the product

Posted by dscho on Mar 22, 2007; 5:31pm
URL: http://imagej.273.s1.nabble.com/query-on-the-product-tp3699986p3699988.html

Hi,

On Thu, 22 Mar 2007, Dimiter Prodanov wrote:

> DPI refers to dot per inch. ImageJ does not refer internally to this concept.
> Images are always calculated as absolute pixel x pixel values.
> The calibration seting, though, is very similar to DPI
> but the units are entrely arbitrary =user-selected
> you can calibrate to micro-meters, meters, kilometers, miles, inches etc.
> You only type in the scale factor, or if  you dont know the number
> you can measure a structure with a known size and then use the
> measurement as the feed-in into the calibrtation.

In effect, you _can_ set DPI, by setting the voxel sizes accordingly. But
as far as I can tell, there is no dialog to set that yet. As a workaround,
you can create a new macro, and write something like

        setVoxelSize(2.3, 1, 10.2, "inch");

and run that macro, to set the voxel dimensions 2.3 x 1 x 10.2 inch^3.

Hth,
Dscho

P.S.: If you need it as a user-friendly dialog, I can write a simple
plugin for that.