com.emphysic.myriad.core.data.ops

Class PyramidOperations

java.lang.Object

com.emphysic.myriad.core.data.ops.PyramidOperations

public class PyramidOperations
extends java.lang.Object

PyramidOperations - general purpose pyramid operations.

Constructor Summary

Constructors

Constructor and Description
PyramidOperations()

Method Summary

Modifier and Type	Method and Description
static Dataset	collapse(Dataset input) Generates the Laplacian Pyramid of an input and blends the levels into a single composite result.
static Dataset	collapse(Dataset input, GaussianPyramidOperation gaussianPyramidOperation) Generates the Laplacian Pyramid of an input and blends the levels into a single composite result.
static Dataset	collapse(java.util.List<Dataset> pyramidLevels) Blends the levels of a Laplacian pyramid into a single composite.
static Dataset	expand(Dataset input) Returns a Dataset twice as large in each dimension
static Dataset	expand(Dataset input, UpscaleOperation upscaleOperation) Returns an upscaled version of the input
static java.util.List<Dataset>	generateLaplacian(Dataset input)
static java.util.List<Dataset>	generateLaplacian(Dataset input, GaussianPyramidOperation gaussianPyramidOperation) Generates the Laplacian pyramid from an original Dataset and a Gaussian Pyramid operation.
static java.util.List<Dataset>	generateLaplacian(java.util.List<Dataset> steps) Generates the Laplacian pyramid from a list of Gaussian pyramid steps.
static void	main(java.lang.String[] args)
static Dataset	reduce(Dataset input) Returns a reduction of the specified Dataset, 1/2 the size in each dimension and Gaussian blurred
static Dataset	reduce(Dataset input, GaussianPyramidOperation gaussianPyramidOperation) Returns the next step in the specified Gaussian pyramid

Methods inherited from class java.lang.Object

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

Constructor Detail

PyramidOperations

public PyramidOperations()

Method Detail

collapse

public static Dataset collapse(java.util.List<Dataset> pyramidLevels)

Blends the levels of a Laplacian pyramid into a single composite.

Parameters:

pyramidLevels - levels of the pyramid

Returns:

blended result

See Also:

to generate the Laplacian pyramid from a Gaussian pyramid

collapse

public static Dataset collapse(Dataset input,
                               GaussianPyramidOperation gaussianPyramidOperation)

Generates the Laplacian Pyramid of an input and blends the levels into a single composite result.

Parameters:

input - original Dataset

gaussianPyramidOperation - pyramid operation to perform

Returns:

blended Dataset

collapse

public static Dataset collapse(Dataset input)

Generates the Laplacian Pyramid of an input and blends the levels into a single composite result.

Parameters:

input - original Dataset

Returns:

blended Dataset

generateLaplacian

public static java.util.List<Dataset> generateLaplacian(java.util.List<Dataset> steps)

Generates the Laplacian pyramid from a list of Gaussian pyramid steps. Note that the first element in the list must be the original dataset for the complete pyramid, e.g. the list is generated as

GaussianPyramidOperation = new GaussianPyramidOperation(); Dataset current = new Dataset(imageDataset); do { steps.add(current); } while ((current = gpo.run(current)) != null);

Parameters:

steps - complete Gaussian pyramid

Returns:

approximation to the Laplacian operator for the original Dataset

generateLaplacian

public static java.util.List<Dataset> generateLaplacian(Dataset input,
                                                        GaussianPyramidOperation gaussianPyramidOperation)

Generates the Laplacian pyramid from an original Dataset and a Gaussian Pyramid operation.

Parameters:

input - original Dataset

gaussianPyramidOperation - pyramid operation to perform

Returns:

approximation to the Laplacian operator for the original Dataset

generateLaplacian

public static java.util.List<Dataset> generateLaplacian(Dataset input)

reduce

public static Dataset reduce(Dataset input,
                             GaussianPyramidOperation gaussianPyramidOperation)

Returns the next step in the specified Gaussian pyramid

Parameters:

input - original input

gaussianPyramidOperation - pyramid operation

Returns:

next step in the pyramid

reduce

public static Dataset reduce(Dataset input)

Returns a reduction of the specified Dataset, 1/2 the size in each dimension and Gaussian blurred

Parameters:

input - original input

Returns:

Dataset

expand

public static Dataset expand(Dataset input,
                             UpscaleOperation upscaleOperation)

Returns an upscaled version of the input

Parameters:

input - original input

upscaleOperation - upscaling operation

Returns:

enlarged Dataset

expand

public static Dataset expand(Dataset input)

Returns a Dataset twice as large in each dimension

Parameters:

input - original input

Returns:

enlarged Dataset

main

public static void main(java.lang.String[] args)
                 throws java.lang.Exception

Throws:

java.lang.Exception