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Re: X-Y coordinates to pixels

Posted by ctrueden on Feb 01, 2006; 8:20pm
URL: http://imagej.273.s1.nabble.com/X-Y-coordinates-to-pixels-tp3703825p3703831.html

Hi Leslie,

I do not know if there is a way to measure points at higher precision in
ImageJ (though I would be surprised if there is not), but this is one of
the things VisBio (http://www.loci.wisc.edu/visbio/) can do. You can
place markers in double-precision floating point, and then export them
to a text file for use in a spreadsheet. See the Overlays page in the
"Data Transforms" section of the program's built-in help for details.

-Curtis

Leslie Day wrote:

>I am hoping someone could help me. I am trying to map a point as it moves
>through a series of images in order to find out velocity of the object and
>distance traveled.. I figured the best way would be to keep creating points
>with the point selector and then map the points. However, currently when I
>use the point selector it gives me x-y coordinates in whole numbers. I need
>something with more significant figures (3 decimal spots) to be able to see
>the movement. Maybe in pixels or μm. Perhaps there is another way to detect
>linear velocity and distance traveled through a series of images.
>
>
>
>Thanks
>
>
>
>Leslie Day
>
>Biology Department
>
>Northeastern University
>
>[hidden email]
>
>617-373-3780
>  
>