skyview.process.imagefinder
Class MaxExposure

java.lang.Object
  skyview.process.ImageFinder
      skyview.process.imagefinder.Border
          skyview.process.imagefinder.MaxExposure

public class MaxExposure
extends Border

This class selects the best image for a pixel by looking for the image with the longest exposure that has the pixel in the field of view. Use of this Finder may not be optimal when using higher order samples, since it will tend to take images out to the edges and thus may have problems there.

Field Summary

Fields inherited from class skyview.process.imagefinder.Border

checkNaNs, CONSUMED, cornersOnly, fromOut, imageUsed, img, input, NO_COVERAGE, NON_PHYSICAL, output, pixelCount, rectCount, retry, SPLIT_X, SPLIT_XY, SPLIT_Y, t2, t3, UNCHECKED

Constructor Summary

MaxExposure()

Method Summary

protected double	criterion(double val, int index) The criterion for the best image
int[]	findImages(Image[] input, Image output) Find the appropriate images.

Methods inherited from class skyview.process.imagefinder.Border

bestFit, cornerMatch, edgeOff, getCelest, getImage, minDist, setStrict

Methods inherited from class skyview.process.ImageFinder

factory

Methods inherited from class java.lang.Object

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

Constructor Detail

MaxExposure

public MaxExposure()

Method Detail

findImages

public int[] findImages(Image[] input,
                        Image output)

Find the appropriate images. This routine gets the exposures for all of the images before calling the standard BorderImageFinder.

Overrides:

findImages in class Border

Parameters:

input - An array of images from which the output image is to be interpolated.

output - An output image to be generated from the input. This method does not change the output image.

Returns:

An index array which for each pixel in the output image gives the best image to sample. Note that this has dimension int[nx*ny] where nx changes most rapidly. The values of the index array can be:

• >= 0: The pixel is best indexed with the given image.
• -1: [internal] The best image for this pixel has not yet been determined.
• -2: This pixel is not on any of the input images.
• -3: This pixel does not represent a physical coordinate.
• -4: [in other methods] this pixel has already been processed.

criterion

protected double criterion(double val,
                           int index)

The criterion for the best image

Overrides:

criterion in class Border