Package skyview.data

Class Contourer

java.lang.Object

skyview.data.Contourer

public class Contourer
extends Object

Find contours of an image.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	Contourer.CSqrt

Constructor Summary

Constructors

Constructor	Description
Contourer()

Method Summary

Modifier and Type	Method	Description
int[]	contour()	Return a map of simple contours.
boolean	getData(String survey)	Get the data for the contourer
double[]	getRange()
void	putImage(Image img)
void	setFunction(String funcName)	Set the transformation to be done on the input image before finding contour regions.
void	setLimits(double min, double max, int n)
void	setLimits(double min, double max, int n, double fraction)	Set up the limits for the contouring.

Methods inherited from class java.lang.Object

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

Constructor Detail

Contourer

public Contourer()

Method Detail

setLimits

public void setLimits(double min,
                      double max,
                      int n)

setLimits

public void setLimits(double min,
                      double max,
                      int n,
                      double fraction)

Set up the limits for the contouring. Note that if logarithmic contours are desired, then the limits should be the common logs of the limits. E.g., if you want to do 5 intervals with the first at 1 and the last at 100, then enter limits of 0 and 2.

putImage

public void putImage(Image img)

getData

public boolean getData(String survey)

Get the data for the contourer

getRange

public double[] getRange()

setFunction

public void setFunction(String funcName)

Set the transformation to be done on the input image before finding contour regions.

Parameters:

funcName - The string "sqrt" or "log" Note that log implies common logarithms.

contour

public int[] contour()

Return a map of simple contours. The contour value for each pixel in the image is computed. When two adjacent pixels are in different contour regions a contour is drawn in the pixel whose value is closest to the contour value.

Returns:

An integer array which gives the contour that should be drawn on any given pixel.