Package seamcarving

Class SeamFinderMultiTest

java.lang.Object

seamcarving.SeamFinderMultiTest

class SeamFinderMultiTest
extends Object

Compare different SeamFinder implementations to check that they compute the same values.

See Also:

SeamFinder, AdjacencyListSeamFinder, GenerativeSeamFinder, DynamicProgrammingSeamFinder, ShortestPathSolver, DijkstraSolver, ToposortDAGSolver

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 String[]	FILES	The image files (.png) and corresponding expected seam costs (.txt) in the BASE_PATH.

Constructor Summary

Constructors

Constructor	Description
SeamFinderMultiTest()

Method Summary

Modifier and Type	Method	Description
private static double	getExpectedSeamEnergy(String fileName, boolean isVertical)	Returns the expected energy for a minimum-cost seam in the picture corresponding to the file name.
private static double	getSeamEnergy(Picture picture, List<Integer> seam, boolean isVertical)	Returns the energy of the given seam in the picture.
static void	main(String[] args)
private static void	printFail(double expectedEnergy, String seam, double seamEnergy, boolean isVertical)	Prints information about a failed SeamFinder test case.
private static void	test(SeamFinder seamFinder)	Tests the given SeamFinder implementation.

Methods inherited from class java.lang.Object

clone, equals, finalize, 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

FILES

private static final String[] FILES

The image files (.png) and corresponding expected seam costs (.txt) in the BASE_PATH.

Constructor Detail

SeamFinderMultiTest

SeamFinderMultiTest()

Method Detail

main

public static void main(String[] args)
                 throws IOException

Throws:

IOException

test

private static void test(SeamFinder seamFinder)
                  throws IOException

Tests the given SeamFinder implementation.

Parameters:

seamFinder - the SeamFinder implementation.

Throws:

IOException - if an error occurs during reading.

printFail

private static void printFail(double expectedEnergy,
                              String seam,
                              double seamEnergy,
                              boolean isVertical)

Prints information about a failed SeamFinder test case.

Parameters:

expectedEnergy - the expected energy for a minimum-cost seam.

seam - the values of the seam computed by the testing algorithm.

seamEnergy - the actual energy of the seam computed by the testing algorithm.

isVertical - true if the seam is vertical.

getSeamEnergy

private static double getSeamEnergy(Picture picture,
                                    List<Integer> seam,
                                    boolean isVertical)

Returns the energy of the given seam in the picture.

Parameters:

picture - the input picture.

seam - the computed seam.

isVertical - true if the seam is vertical.

Returns:

the energy of the given seam in the picture.

getExpectedSeamEnergy

private static double getExpectedSeamEnergy(String fileName,
                                            boolean isVertical)
                                     throws FileNotFoundException

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

Parameters:

fileName - the base file name of the picture.

isVertical - true if the seam is 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.