skyview.process.imagefinder
Class Prefetcher

java.lang.Object
  skyview.process.imagefinder.Prefetcher

All Implemented Interfaces:

java.io.Serializable, Component, Processor

public class Prefetcher
extends java.lang.Object
implements Processor

This class makes sure that all of the candidate images are actually present and then if any candidate was not already in the cache is redoes the image finding using the standard image finder. This accommodate cases where the proxy geometry is not a good approximation to the real geometry. It still requires that the image selection be done reasonably well.

See Also:

Serialized Form

Constructor Summary

Prefetcher()

Method Summary

java.lang.String	getDescription() Get the description of this component.
java.lang.String	getName() Get the name of this component.
void	process(Image[] inputs, Image output, int[] source, Sampler samp, DepthSampler dsamp) Perform the processing task associated with this object.
void	updateHeader(Header header) Update the FITS header to indicate what processing was done.

Methods inherited from class java.lang.Object

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

Constructor Detail

Prefetcher

public Prefetcher()

Method Detail

getName

public java.lang.String getName()

Description copied from interface: Component

Get the name of this component.

Specified by:

getName in interface Component

getDescription

public java.lang.String getDescription()

Description copied from interface: Component

Get the description of this component.

Specified by:

getDescription in interface Component

process

public void process(Image[] inputs,
                    Image output,
                    int[] source,
                    Sampler samp,
                    DepthSampler dsamp)

Description copied from interface: Processor

Perform the processing task associated with this object.

Specified by:

process in interface Processor

Parameters:

inputs - The array of input survey images.

output - The output user image. A null output may signal that an error has taken place. If this processor wishes to do something in response to the error, it may look at the ErrorMsg setting.

source - An array giving the source image for each output pixel.

samp - The sampler object used to do spatial sampling of the input images.

dsamp - The sampler in the energy dimension (often null).

updateHeader

public void updateHeader(Header header)

Update the FITS header to indicate what processing was done.

Specified by:

updateHeader in interface Processor