| org.geotools.coverage.processing.AbstractStatisticsOperationJAI
 org.geotools.coverage.processing.operation.Histogram
| Histogram | | public class Histogram extends AbstractStatisticsOperationJAI (Code) | | This operation simply wraps JAI Extrema operations described by
HistogramDescriptor inside a GeoTools operation in order to make it
spatial-aware.
For the moment this is a very simple wrap. Plans on the 2.4 and successive
versions of this operation are to add the ability to to use spatial ROIs and
to specific Spatial subsampling. As of now, ROI has to be a Java2D
Shape subclass and the parameters to control x and y subsamplings got
to be Integer, which means pixel-aware.
For more information on how the underlying
JAI operators works you
can have a look here: HistogramDescriptor
author:
Simone Giannecchini
since:
2.4
See Also: javax.media.jai.Histogram |
| Method Summary | |
| protected boolean | computeOnGeophysicsValues(ParameterValueGroup parameters)
This operation MUST be performed on the geophysics data for this
GridCoverage2D . | | protected Map | getProperties(RenderedImage data, CoordinateReferenceSystem crs, InternationalString name, MathTransform toCRS, GridCoverage2D[] sources, Parameters parameters)
Prepare the
javax.media.jai.Histogram property for this extream
operation. |
| GT_SYNTHETIC_PROPERTY_HISTOGRAM | | final public static String GT_SYNTHETIC_PROPERTY_HISTOGRAM(Code) | | String key for getting the
javax.media.jai.Histogram object.
|
| Histogram | | public Histogram() throws OperationNotFoundException(Code) | | Default constructor for the
Histogram operation.
throws:
OperationNotFoundException - |
| computeOnGeophysicsValues | | protected boolean computeOnGeophysicsValues(ParameterValueGroup parameters)(Code) | | This operation MUST be performed on the geophysics data for this
GridCoverage2D .
Parameters:
parameters - ParameterValueGroup that describes this operation always true. |
| getProperties | | protected Map getProperties(RenderedImage data, CoordinateReferenceSystem crs, InternationalString name, MathTransform toCRS, GridCoverage2D[] sources, Parameters parameters)(Code) | | Prepare the
javax.media.jai.Histogram property for this extream
operation.
See ExtremaDescriptor
for more info.
See Also: OperationJAI#getProperties(RenderedImage, CoordinateReferenceSystem,
* InternationalString, MathTransform, GridCoverage2D[],
* org.geotools.coverage.processing.OperationJAI.Parameters), |
| Methods inherited from org.geotools.coverage.processing.AbstractStatisticsOperationJAI | protected ParameterBlockJAI prepareParameters(ParameterValueGroup parameters)(Code)(Java Doc)
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