Re: Image transform

Posted by Wayne Rasband on
URL: http://imagej.273.s1.nabble.com/Image-transform-tp3703413p3703424.html

> Could you tell me what is the unit of "center of mass" in the ImageJ?
> The unit of "Center of Mass" is pixels? When I try  to track a dot, we
> can get the "center of mass", such as XM and YM.
> I don't know the unit of "center of mass" .
> Thank you very much.

The unit of length of is displayed at the top of each image. If it says
something like "512x512 pixels" then the image is not spatially
calibrated and the unit is pixels. If is says "240.00x240.00 mm
(512x512)" then the unit is millimeters. Use the Analyze>Set Scale or
Image>Properties command to specify the scale and unit. Check "Global"
and ImageJ will use the same scale and unit for all images you open
during the current session.

-wayne