Package seamfinding

Class SeamFinderTests

java.lang.Object

seamfinding.SeamFinderTests

Direct Known Subclasses:

AdjacencyListSeamFinderTests.UsingDijkstraSolver, AdjacencyListSeamFinderTests.UsingToposortDAGSolver, DynamicProgrammingSeamFinderTests, GenerativeSeamFinderTests.UsingDijkstraSolver, GenerativeSeamFinderTests.UsingToposortDAGSolver

@TestInstance(PER_CLASS)
public abstract class SeamFinderTests
extends Object

Abstract class providing test cases for all implementations of the SeamFinder interface.

See Also:

SeamFinder

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) class	SeamFinderTests.RuntimeExperiments

Field Summary

Fields

Modifier and Type	Field	Description
private static String	BASE_PATH	The base directory path for the images.
private static double	EPSILON	Error tolerance for the minimum-cost seam.
private static EnergyFunction	f	The EnergyFunction implementation.
private SeamFinder	seamFinder	The SeamFinder implementation to test.

Constructor Summary

Constructors

Constructor	Description
SeamFinderTests()

Method Summary

Modifier and Type	Method	Description
private static void	checkHorizontal(Picture picture, List<Integer> seam)	Checks that the seam is a valid horizontal seam in the picture.
abstract SeamFinder	createSeamFinder()	Returns a new instance of the SeamFinder interface.
private static double	energyHorizontal(Picture picture, List<Integer> seam)	Returns the energy of the horizontal seam by applying the given EnergyFunction on the Picture.
private static double	precomputedEnergy(String basename, String orientation)	Returns the expected energy for a minimum-cost seam in the picture corresponding to the file name.
(package private) void	precomputedImages(String basename)
(package private) void	setup()

Methods inherited from class java.lang.Object

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

Field Detail

EPSILON

private static final double EPSILON

Error tolerance for the minimum-cost seam.

See Also:

Constant Field Values

BASE_PATH

private static final String BASE_PATH

The base directory path for the images.

See Also:

Constant Field Values

f

private static final EnergyFunction f

The EnergyFunction implementation.

seamFinder

private SeamFinder seamFinder

The SeamFinder implementation to test.

Constructor Detail

SeamFinderTests

public SeamFinderTests()

Method Detail

createSeamFinder

public abstract SeamFinder createSeamFinder()

Returns a new instance of the SeamFinder interface.

Returns:

a new instance of the SeamFinder interface

setup

@BeforeAll
void setup()

precomputedImages

@ParameterizedTest
@ValueSource(strings={"HJoceanSmall","stripes","diagonals","diag_test","chameleon","12x10","10x12","10x10","8x3","7x10","7x3","6x5","5x6","4x6","3x8","3x7","3x4","3x3"})
void precomputedImages(String basename)
                throws IOException

Throws:

IOException

precomputedEnergy

private static double precomputedEnergy(String basename,
                                        String orientation)
                                 throws FileNotFoundException

Returns the expected energy for a minimum-cost seam in the picture corresponding to the file name.

Parameters:

basename - the base file name of the picture.

orientation - the seam orientation, either "horizontal" or "vertical".

Returns:

the expected energy for a minimum-cost seam in the picture corresponding to the file name.

Throws:

FileNotFoundException - if the expected seam cost file for the given orientation is missing.

checkHorizontal

private static void checkHorizontal(Picture picture,
                                    List<Integer> seam)

Checks that the seam is a valid horizontal seam in the picture.

Parameters:

picture - the Picture.

seam - the seam to remove.

energyHorizontal

private static double energyHorizontal(Picture picture,
                                       List<Integer> seam)

Returns the energy of the horizontal seam by applying the given EnergyFunction on the Picture.

Parameters:

picture - the Picture.

seam - the seam to remove.

Returns:

the energy of the horizontal seam by applying the given EnergyFunction on the Picture.