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java.lang.Objectimagescience.segment.ZeroCrosser
public class ZeroCrosser
Detects zero-crossings in images.
Field Summary | |
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Messenger |
messenger
The object used for message displaying. |
Progressor |
progressor
The object used for progress displaying. |
Constructor Summary | |
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ZeroCrosser()
Default constructor. |
Method Summary | |
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void |
run(Image image)
Detects zero-crossings in an image. |
Methods inherited from class java.lang.Object |
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equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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public final Messenger messenger
public final Progressor progressor
Constructor Detail |
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public ZeroCrosser()
Method Detail |
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public void run(Image image)
image
- The input image in which zero-crossings are to be detected. The image is overwritten with the detection results. To determine whether a zero-crossing is present, this method compares the signs of neighboring image elements, and if they are different, it uses a linear interpolation scheme to determine the element whose center is closest to the location of the crossing. This element is then set to 255
. Other elements are set to 0
. If the size of the image in the z-dimension equals 1
, this method compares neighboring elements in 2D (x-y space), otherwise it compares neighboring elements in 3D (x-y-z space). The algorithm is applied to every x-y(-z) subimage in a 5D image.
java.lang.NullPointerException
- If image
is null
.
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Copyright (C) Erik Meijering. Permission to use this software and corresponding documentation for educational, research, and not-for-profit purposes, without a fee and without a signed licensing agreement, is granted, subject to the following terms and conditions.
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