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OrientationJ_Test_Image.java
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Sat, Nov 9, 03:14

OrientationJ_Test_Image.java
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//==============================================================================
//
// Project: Directional Image Analysis - OrientationJ plugin
//
// Author: Daniel Sage
//
// Organization: Biomedical Imaging Group (BIG)
// Ecole Polytechnique Federale de Lausanne (EPFL), Lausanne, Switzerland
//
// Information:
// OrientationJ: http://bigwww.epfl.ch/demo/orientation/
// MonogenicJ: http://bigwww.epfl.ch/demo/monogenic/
//
//
// Reference on methods and plugin
// Z. Püspöki, M. Storath, D. Sage, M. Unser
// "Transforms and Operators for Directional Bioimage Analysis: A Survey,"
// Advances in Anatomy, Embryology and Cell Biology, vol. 219, Focus on Bio-Image Informatics,
// Springer International Publishing, ch. 3, pp. 69-93, May 21, 2016.
//
// Reference on applications
// E. Fonck, G.G. Feigl, J. Fasel, D. Sage, M. Unser, D.A. Ruefenacht, N. Stergiopulos
// "Effect of Aging on Elastin Functionality in Human Cerebral Arteries,"
// Stroke, vol. 40, no. 7, pp. 2552-2556, July 2009.
//
// R. Rezakhaniha, A. Agianniotis, J.T.C. Schrauwen, A. Griffa, D. Sage, C.V.C. Bouten, F.N. van de Vosse, M. Unser, N. Stergiopulos
// "Experimental Investigation of Collagen Waviness and Orientation in the Arterial Adventitia Using Confocal Laser Scanning Microscopy,"
// Biomechanics and Modeling in Mechanobiology, vol. 11, no. 3-4, pp. 461-473, 2012.
// Conditions of use: You'll be free to use this software for research purposes,
// but you should not redistribute it without our consent. In addition, we
// expect you to include a citation or acknowledgment whenever you present or
// publish results that are based on it.
//
// History:
// - Updated (Daniel Sage, 24 January 2011)
// - Added the Vector field (Daniel Sage, 1 March 2017)
//
//==============================================================================
import ij.ImagePlus;
import ij.plugin.PlugIn;
import ij.process.FloatProcessor;
public class OrientationJ_Test_Image implements PlugIn {
public static void main(String arg[]) {
new OrientationJ_Test_Image().run("");
}
public void run(String arg) {
double fmin = 0.01;
double fmax = 10*fmin;
FloatProcessor fp = new FloatProcessor(500, 500);
for(int i=0; i<500; i++)
for(int j=0; j<500; j++) {
double r = Math.sqrt((i-250)*(i-250) + (j-250)*(j-250));
double u = 1.0/(1.0 + Math.exp((r-220.0)/5.0));
double f = fmin + r * (fmax - fmin) / 500.0;
double v = Math.sin(Math.PI * 2 * f * r);
fp.putPixelValue(i, j, (1.0 + v * u) * 125);
}
new ImagePlus("Test Image", fp).show();
}
}

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