Edit>Selection>Line to Area produces change in area of freehand line?

Posted by Bill Christens-Barry on Jul 15, 2010; 3:29pm
URL: http://imagej.273.s1.nabble.com/Edit-Selection-Line-to-Area-produces-change-in-area-of-freehand-line-tp3687606.html

Playing with the Edit>Selection>Line to Area command that is new in v1.44d, I found that measurements of an arbitrary freehand line (1 pixel in width) gave different areas before and after use of the new command:


        Label        Area  Mean       StdDev      Length
1      Two:1       394   94.932    21.618     391.638
2      Two:1       360   95.347    21.869     0

It seems curious that the area decreased upon use of the command, while the ROI outline visually increased in breadth. What's behind the changes to area that are calculated?

Bill