Package skyview.process.imagefinder
Class MaxExposure
java.lang.Object
skyview.process.ImageFinder
skyview.process.imagefinder.RectRecurse
skyview.process.imagefinder.MaxExposure
- Direct Known Subclasses:
GalexExposure
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.
May wish to specify the MinEdge setting to cope with tht.
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Field Summary
Fields inherited from class skyview.process.imagefinder.RectRecurse
CONSUMED, fromOut, NO_COVERAGE, NON_PHYSICAL, SPLIT_X, SPLIT_XY, SPLIT_Y, UNCHECKED
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionprotected double
criterion
(int index, int nx, int ny, double tx, double ty) The criterion for the best imageint[]
findImages
(Image[] input, Image output) Find the appropriate images.Methods inherited from class skyview.process.imagefinder.RectRecurse
cornerMatch, edgeOff, getCandidate, getImage, getInputLimits, minDist, printOut, radiusSquared, setStrict
Methods inherited from class skyview.process.ImageFinder
factory
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Constructor Details
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MaxExposure
public MaxExposure()
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Method Details
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findImages
Find the appropriate images. This routine gets the exposures for all of the images before calling the standard BorderImageFinder.- Overrides:
findImages
in classRectRecurse
- Parameters:
input
- An array of images that may be sampled to get the output image.output
- The output image. In this routine we are interested in its geometry, not its data.- 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.
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criterion
protected double criterion(int index, int nx, int ny, double tx, double ty) The criterion for the best image- Specified by:
criterion
in classRectRecurse
- Parameters:
index
- The index of the image being considerednx
- The width of the candidate imageny
- The height of the caandiate imagetx
- The x-value of the requested point.ty
- The y-value of the requested point.- Returns:
- A measure of the desirability of using this image to same this point. Larger is better.
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