This plugin produces a profile plot of normalized integrated intensities around concentric circles as a function of
distance from a point in the image. The point is automatically defined as the center of the rectangle that bounds
the current ROI. The position of this point can be modified in a dialog box.
The intensity at any given distance from the point represents the sum of the pixel values around a circle.
This circle has the point as its center and the distance from the point as radius. The integrated intensity is divided
by the number of pixels in the circle that is also part of the image, yielding normalized comparable values.
The profile x-axis can be plotted as pixel values or as
values according to the spatial calibration of input image.
Radial profiles are useful for measurement of
X-ray powder diffraction patterns as well as electron diffraction patterns.
Author: Wayne Rasband (email@example.com) History: 2000/11/28: First version 2003/01/28: Uses the image or selection min and max; works correctly with signed images Source: SixteenBit_Histogram.java Installation:
Author: Wayne Rasband (firstname.lastname@example.org) Date: 2000/8/17 Source: Circularity_.java Installation: Circularity calculations are built into ImageJ 1.29 and later. Check “Circularity” in Analyze/Set Measurements and the
Authors: Hemerson Pistori (pistori at ec.ucdb.br) and Eduardo Rocha Costa (eduardo.rocha at poli.usp.br) History: 2002/07/29: First version 2006/01/18: Can find circles with arbitrary radius 2008/10/30: