Package inra.ijpb.morphology.strel

Class LocalExtremumBufferGray8

java.lang.Object
inra.ijpb.morphology.strel.LocalExtremumBufferGray8
All Implemented Interfaces:
LocalExtremum
public class LocalExtremumBufferGray8
extends java.lang.Object
implements LocalExtremum

Computes the maximum in a local buffer around current point.

This implementation considers a circular buffer (when a value is added, it replaces the first value that was inserted) that makes it possible to update extrema if needed.

Works only for Grayscale images coded between 0 and 255.

Author:
David Legland

  • Nested Class Summary

    Nested classes/interfaces inherited from interface inra.ijpb.morphology.strel.LocalExtremum

    LocalExtremum.Type

  • Constructor Summary

    Constructors
    Constructor Description
    LocalExtremumBufferGray8​(int n)
    Main constructor.
    LocalExtremumBufferGray8​(int n, int value)
    Initializes an histogram filled with the given value.
    LocalExtremumBufferGray8​(int n, LocalExtremum.Type type)
    Constructor from size and type of extremum (minimum or maximum).

  • Method Summary

    Modifier and Type Method Description
    void add​(int value)
    Adds a value to the local histogram, and update bounds if needed.
    void clear()
    Resets inner counts with default maximal integer values (Integer.MIN_VALUE for MAX, Integer.MAX_VALUE for MIN)
    void fill​(int value)
    Resets histogram by considering it is filled with the given value.
    int getMax()
    Returns the maximum value stored in this local histogram
    void setMinMaxSign​(int sign)
    Changes the sign used for distinguishing minimum and maximum.

    Methods inherited from class java.lang.Object

    equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • LocalExtremumBufferGray8

      public LocalExtremumBufferGray8​(int n)
      Main constructor.
      Parameters:
      n - the size of the buffer

    • LocalExtremumBufferGray8

      public LocalExtremumBufferGray8​(int n, LocalExtremum.Type type)
      Constructor from size and type of extremum (minimum or maximum).
      Parameters:
      n - the size of the buffer
      type - the type of extremum (maximum or minimum)

    • LocalExtremumBufferGray8

      public LocalExtremumBufferGray8​(int n, int value)
      Initializes an histogram filled with the given value.
      Parameters:
      n - the size of the buffer
      value - the initial value of all elements in buffer

  • Method Details

    • setMinMaxSign

      public void setMinMaxSign​(int sign)
      Changes the sign used for distinguishing minimum and maximum.
      Parameters:
      sign - +1 for maximum, -1 for minimum

    • add

      public void add​(int value)
      Adds a value to the local histogram, and update bounds if needed. Then removes the last stored value, and update bounds if needed.
      Parameters:
      value - the value to add

    • clear

      public void clear()
      Resets inner counts with default maximal integer values (Integer.MIN_VALUE for MAX, Integer.MAX_VALUE for MIN)

    • fill

      public void fill​(int value)
      Resets histogram by considering it is filled with the given value. Update max and max accordingly.
      Parameters:
      value - the new value of all elements in buffer

    • getMax

      public int getMax()
      Returns the maximum value stored in this local histogram
      Returns:
      the maximum value in neighborhood