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--- documents:120206pyip_cooking:python_imagej_cookbook [2021/10/19 17:55] – added scijava scripting in a script kota
+++ documents:120206pyip_cooking:python_imagej_cookbook [2021/11/08 07:15] – added background subtraciton kota
@@ Line 1364: / Line 1364: @@
 For more explanation about this processing, see [[http://rsbweb.nih.gov/ij/developer/api/ij/plugin/filter/GaussianBlur.html|the explanation in javadoc]].
+==== Background Subtraction (Rolling Ball) ====
+Menu item [Process > Subtract Background]
+<code python>
+from ij import IJ
+from ij.plugin.filter import BackgroundSubtracter
+imp = IJ.getImage()
+ip = imp.getProcessor()
+radius = 50.0
+createBackground = False
+lightBackground = False
+useParaboloid = False
+doPresmooth = False
+correctCorners = False
+bs = BackgroundSubtracter()
+bs.rollingBallBackground(ip, radius, createBackground, lightBackground, useParaboloid, doPresmooth, correctCorners)
+imp.updateAndDraw()
+</code>
+If the image is in RGB, then use a different method (rollingBallBrightnessBackground).
+For more explanation about this processing, see [[https://imagej.nih.gov/ij/developer/api/ij/ij/plugin/filter/BackgroundSubtracter.html|the explanation in javadoc]].
 ==== ImageCalculator ====