Uses of Class
dev.brachtendorf.jimagehash.hashAlgorithms.HashingAlgorithm

Packages that use HashingAlgorithm

Package	Description
dev.brachtendorf.jimagehash.hash
dev.brachtendorf.jimagehash.hashAlgorithms	Hashing algorithms convert images to a hash representation enabling an approximate similarity measurement without storing much data.
dev.brachtendorf.jimagehash.hashAlgorithms.experimental	Experimental hashing algorithms are not ready to be used just yet.
dev.brachtendorf.jimagehash.matcher
dev.brachtendorf.jimagehash.matcher.cached	Cached image matchers allow to check images against a batch of previously added images keeping the buffered image object and hashes in memory.
dev.brachtendorf.jimagehash.matcher.categorize	The categorization package includes classes to group images into distinct groups based on their similarity.
dev.brachtendorf.jimagehash.matcher.categorize.supervised.randomForest
dev.brachtendorf.jimagehash.matcher.exotic	Image matchers not fitting into specific categories
dev.brachtendorf.jimagehash.matcher.persistent	Persistent image matchers allow to check images against a batch of previously added images keeping only the created hashes coupled with a unique identifier of the image.
dev.brachtendorf.jimagehash.matcher.persistent.database

Uses of HashingAlgorithm in dev.brachtendorf.jimagehash.hash

Methods in dev.brachtendorf.jimagehash.hash with parameters of type HashingAlgorithm

Modifier and Type	Method	Description
static FuzzyHash	HashUtil.toFuzzyHash(HashingAlgorithm hasher, BufferedImage... images)
static FuzzyHash	HashUtil.toFuzzyHash(HashingAlgorithm hasher, File... imageFiles)
BufferedImage	FuzzyHash.toImage(int blockSize, HashingAlgorithm hashingAlgorithm)
BufferedImage	Hash.toImage(int blockSize, HashingAlgorithm hasher)	Creates a visual representation of the hash mapping the hash values to the section of the rescaled image used to generate the hash.

Uses of HashingAlgorithm in dev.brachtendorf.jimagehash.hashAlgorithms

Subclasses of HashingAlgorithm in dev.brachtendorf.jimagehash.hashAlgorithms

Modifier and Type	Class	Description
class	AverageColorHash	Calculate a hash value based on the average rgb color in an image.
class	AverageHash	Calculate a hash value based on the average luminosity in an image.
class	AverageKernelHash	Calculate a hash value based on the average luminosity in an image.
class	DifferenceHash	Calculates a hash based on gradient tracking.
class	MedianHash	Calculate a hash value based on the median luminosity in an image.
class	PerceptiveHash	Calculate a hash based on the frequency of an image using the DCT T2.
class	RotAverageHash	Calculate a hash value based on the average luminosity in an image after mapping each pixel to a rotational bucket.
class	RotPHash	A rotational invariant hashing algorithm which is mostly immune to rotation attacks.
class	WaveletHash	Calculate a hash based on iterative application of a haar wavelet on the luminosity values of the input image.

Uses of HashingAlgorithm in dev.brachtendorf.jimagehash.hashAlgorithms.experimental

Subclasses of HashingAlgorithm in dev.brachtendorf.jimagehash.hashAlgorithms.experimental

Modifier and Type	Class	Description
class	HogHash	Deprecated. not ready to use yet
class	HogHashAngularEncoded	Deprecated. not ready to use yet
class	HogHashDual	Deprecated. not ready to use yet

Uses of HashingAlgorithm in dev.brachtendorf.jimagehash.matcher

Fields in dev.brachtendorf.jimagehash.matcher with type parameters of type HashingAlgorithm

Modifier and Type	Field	Description
protected LinkedHashSet<HashingAlgorithm>	PlainImageMatcher.steps
protected LinkedHashMap<HashingAlgorithm,TypedImageMatcher.AlgoSettings>	TypedImageMatcher.steps	Contains multiple hashing algorithms applied in the order they were added to the image matcher

Methods in dev.brachtendorf.jimagehash.matcher that return types with arguments of type HashingAlgorithm

Modifier and Type	Method	Description
Set<HashingAlgorithm>	PlainImageMatcher.getAlgorithms()
Map<HashingAlgorithm,TypedImageMatcher.AlgoSettings>	TypedImageMatcher.getAlgorithms()	Return an immutable map copy of the algorithms currently used in the matcher.

Methods in dev.brachtendorf.jimagehash.matcher with parameters of type HashingAlgorithm

Modifier and Type	Method	Description
boolean	PlainImageMatcher.addHashingAlgorithm(HashingAlgorithm hashingAlgorithm)	Append a new hashing algorithm to be used by this matcher.
void	TypedImageMatcher.addHashingAlgorithm(HashingAlgorithm algo, double threshold)	Append a new hashing algorithm which will be executed after all hash algorithms passed the test.
void	TypedImageMatcher.addHashingAlgorithm(HashingAlgorithm algo, double threshold, boolean normalized)	Append a new hashing algorithm which will be executed after all hash algorithms passed the test.
boolean	TypedImageMatcher.removeHashingAlgo(HashingAlgorithm algo)	Removes the hashing algorithms from the image matcher.
boolean	PlainImageMatcher.removeHashingAlgorithm(HashingAlgorithm hashingAlgorithm)	Remove a hashing algorithm from this matcher.

Uses of HashingAlgorithm in dev.brachtendorf.jimagehash.matcher.cached

Fields in dev.brachtendorf.jimagehash.matcher.cached with type parameters of type HashingAlgorithm

Modifier and Type	Field	Description
protected HashMap<HashingAlgorithm,BinaryTree<BufferedImage>>	ConsecutiveMatcher.binTreeMap	Binary Tree holding results for each individual hashing algorithm

Methods in dev.brachtendorf.jimagehash.matcher.cached that return types with arguments of type HashingAlgorithm

Modifier and Type	Method	Description
Map<HashingAlgorithm,TypedImageMatcher.AlgoSettings>	ConsecutiveMatcher.getAlgorithms()	Return an immutable map copy of the algorithms currently used in the matcher.

Methods in dev.brachtendorf.jimagehash.matcher.cached with parameters of type HashingAlgorithm

Modifier and Type	Method	Description
void	ConsecutiveMatcher.addHashingAlgorithm(HashingAlgorithm algo, double threshold, boolean normalized)	Append a new hashing algorithm which will be executed after all hash algorithms passed the test.
void	CumulativeMatcher.addHashingAlgorithm(HashingAlgorithm algo)	Add a hashing algorithm to the matcher with a weight multiplier of 1.
void	CumulativeMatcher.addHashingAlgorithm(HashingAlgorithm algo, double weight)	Add a hashing algorithm to the matcher with the given weight multiplier.
void	CumulativeMatcher.addHashingAlgorithm(HashingAlgorithm algo, double weight, boolean dummy)	Add a hashing algorithm to the matcher with the given weight multiplier.
boolean	ConsecutiveMatcher.removeHashingAlgo(HashingAlgorithm algo)	Removes the hashing algorithms from the image matcher.

Uses of HashingAlgorithm in dev.brachtendorf.jimagehash.matcher.categorize

Fields in dev.brachtendorf.jimagehash.matcher.categorize with type parameters of type HashingAlgorithm

Modifier and Type	Field	Description
protected Map<String,Map<HashingAlgorithm,Hash>>	CategoricalMatcher.cachedHashes	Hashes of the added images
protected Map<HashingAlgorithm,Map<Integer,FuzzyHash>>	CategoricalMatcher.clusterHash	The cluster centeroid of a given hashing algorithm and category.
protected Map<HashingAlgorithm,Map<FuzzyHash,Integer>>	CategoricalMatcher.clusterReverseLookup	Quick lookup the category of a fuzzy cluster hash

Methods in dev.brachtendorf.jimagehash.matcher.categorize with parameters of type HashingAlgorithm

Modifier and Type	Method	Description
boolean	CategoricalMatcher.addHashingAlgorithm(HashingAlgorithm algo)
boolean	WeightedCategoricalMatcher.addHashingAlgorithm(HashingAlgorithm algo)
BufferedImage	CategoricalMatcher.categoricalHashToImage(HashingAlgorithm hashAlgorithm, int category, int blockSize)
FuzzyHash	CategoricalMatcher.getClusterAverageHash(HashingAlgorithm algorithm, int category)	Get the average hash representing the midpoint of the category cluster.

Constructors in dev.brachtendorf.jimagehash.matcher.categorize with parameters of type HashingAlgorithm

Constructor	Description
KMeansClassifier(int k, HashingAlgorithm hasher)

Uses of HashingAlgorithm in dev.brachtendorf.jimagehash.matcher.categorize.supervised.randomForest

Method parameters in dev.brachtendorf.jimagehash.matcher.categorize.supervised.randomForest with type arguments of type HashingAlgorithm

Modifier and Type	Method	Description
protected Object[]	RandomForestCategorizer.createForest(int trees, int numVars, int numVarsRep, List<dev.brachtendorf.datastructures.Pair<FuzzyHash,HashingAlgorithm>> randomVariables, Map<HashingAlgorithm,Map<BufferedImage,Hash>> preComputedHashesTestAgainst, ExecutorService tPool)	Deprecated.
protected Object[]	RandomForestCategorizer.createForest(int trees, int numVars, int numVarsRep, List<dev.brachtendorf.datastructures.Pair<FuzzyHash,HashingAlgorithm>> randomVariables, Map<HashingAlgorithm,Map<BufferedImage,Hash>> preComputedHashesTestAgainst, ExecutorService tPool)	Deprecated.

Uses of HashingAlgorithm in dev.brachtendorf.jimagehash.matcher.exotic

Methods in dev.brachtendorf.jimagehash.matcher.exotic with parameters of type HashingAlgorithm

Modifier and Type	Method	Description
boolean	BloomFilter.addHashingAlgorithm(HashingAlgorithm hashingAlgorithm)	Added hashing algorithms will be queried to seed the internal rng.
protected int	BloomFilter.imageToHashCode(HashingAlgorithm hasher, BufferedImage image)	Convert the image to a numerical hashcode
boolean	BloomFilter.removeHashingAlgorithm(HashingAlgorithm hashingAlgorithm)	Hashing algorithms may only be added and removed as long as no image has been added to this set.

Uses of HashingAlgorithm in dev.brachtendorf.jimagehash.matcher.persistent

Fields in dev.brachtendorf.jimagehash.matcher.persistent with type parameters of type HashingAlgorithm

Modifier and Type	Field	Description
protected HashMap<HashingAlgorithm,BinaryTree<String>>	PersitentBinaryTreeMatcher.binTreeMap	Binary Tree holding results for each individual hashing algorithm
protected Map<HashingAlgorithm,Map<String,Hash>>	PersitentBinaryTreeMatcher.cachedHashes	Save the hashes of added images mapped to their unique id for fast retrieval.

Methods in dev.brachtendorf.jimagehash.matcher.persistent with parameters of type HashingAlgorithm

Modifier and Type	Method	Description
void	CumulativeMatcher.addHashingAlgorithm(HashingAlgorithm algo)	Add a hashing algorithm to the matcher with a weight multiplier of 1.
void	CumulativeMatcher.addHashingAlgorithm(HashingAlgorithm algo, double weight)	Add a hashing algorithm to the matcher with the given weight multiplier.
void	CumulativeMatcher.addHashingAlgorithm(HashingAlgorithm algo, double weight, boolean dummy)	Add a hashing algorithm to the matcher with the given weight multiplier.
void	PersistentImageMatcher.addHashingAlgorithm(HashingAlgorithm algo, double threshold)
void	PersistentImageMatcher.addHashingAlgorithm(HashingAlgorithm algo, double threshold, boolean normalized)
void	PersitentBinaryTreeMatcher.addHashingAlgorithm(HashingAlgorithm algo, double threshold, boolean normalized)	Append a new hashing algorithm which will be executed after all hash algorithms passed the test.
protected Hash	PersitentBinaryTreeMatcher.getHash(HashingAlgorithm algo, String uniqueId, BufferedImage bImage)
boolean	PersitentBinaryTreeMatcher.removeHashingAlgo(HashingAlgorithm algo)	Removes the hashing algorithms from the image matcher.

Uses of HashingAlgorithm in dev.brachtendorf.jimagehash.matcher.persistent.database

Methods in dev.brachtendorf.jimagehash.matcher.persistent.database with parameters of type HashingAlgorithm

Modifier and Type	Method	Description
void	DatabaseImageMatcher.addHashingAlgorithm(HashingAlgorithm algo, double threshold)	Append a new hashing algorithm which will be executed after all hash algorithms passed the test.
void	DatabaseImageMatcher.addHashingAlgorithm(HashingAlgorithm algo, double threshold, boolean normalized)	Append a new hashing algorithm which will be executed after all hash algorithms passed the test.
protected void	DatabaseImageMatcher.addImage(HashingAlgorithm hashAlgo, String url, BufferedImage image)
protected void	DatabaseImageMatcher.createHashTable(HashingAlgorithm hasher)	Create a table to hold image hashes for a particular image hashing algorithm
boolean	DatabaseImageMatcher.doesEntryExist(String uniqueId, HashingAlgorithm hashAlgo)	Check if an entry with the given uniqueId already exists
protected List<Result<String>>	DatabaseImageMatcher.getSimilarImages(Hash targetHash, int maxDistance, HashingAlgorithm hasher)	Return all url descriptors which describe images within the provided hammington distance of the supplied hash
protected Hash	DatabaseImageMatcher.reconstructHashFromDatabase(HashingAlgorithm hasher, byte[] bytes)	Reconstruct a hash value from the database
boolean	DatabaseImageMatcher.removeHashingAlgo(HashingAlgorithm algo, boolean forceTableDeletion)	Removes the hashing algorithm from the image matcher.
protected String	DatabaseImageMatcher.resolveTableName(HashingAlgorithm hashAlgo)	Map a hashing algorithm to a table name