net.semanticmetadata.lire.searchers

类 BitSamplingImageSearcher

java.lang.Object

net.semanticmetadata.lire.searchers.AbstractImageSearcher

net.semanticmetadata.lire.searchers.BitSamplingImageSearcher

所有已实现的接口:

ImageSearcher

public class BitSamplingImageSearcher
extends AbstractImageSearcher

This class allows for searching based on BitSampling HashingMode. First a number of candidates is retrieved from the index, then the candidates are re-ranked. The number of candidates can be tuned with the numHashedResults parameter in the constructor. The higher this parameter, the better the results, but the slower the search.

作者:

Mathias Lux, mathias@juggle.at, 2013-04-12

构造器概要

构造器

构造器和说明
BitSamplingImageSearcher(int maximumHits, GlobalFeature feature) Creates a new searcher for BitSampling based hashes.
BitSamplingImageSearcher(int maximumHits, GlobalFeature feature, boolean useFastSearch) Creates a new searcher for BitSampling based hashes.
BitSamplingImageSearcher(int maximumHits, GlobalFeature feature, int numHashedResults) Creates a new searcher for BitSampling based hashes.
BitSamplingImageSearcher(int maximumHits, java.lang.String featureFieldName, java.lang.String hashesFieldName, GlobalFeature feature) Creates a new searcher for BitSampling based hashes.
BitSamplingImageSearcher(int maximumHits, java.lang.String featureFieldName, java.lang.String hashesFieldName, GlobalFeature feature, java.io.InputStream hashes)
BitSamplingImageSearcher(int maximumHits, java.lang.String featureFieldName, java.lang.String hashesFieldName, GlobalFeature feature, java.io.InputStream hashes, int numHashedResults)
BitSamplingImageSearcher(int maximumHits, java.lang.String featureFieldName, java.lang.String hashesFieldName, GlobalFeature feature, int numHashedResults)

方法概要

限定符和类型	方法和说明
ImageDuplicates	findDuplicates(org.apache.lucene.index.IndexReader reader) Identifies duplicates in the database.
ImageSearchHits	search(java.awt.image.BufferedImage image, org.apache.lucene.index.IndexReader reader) Searches for images similar to the given image.
ImageSearchHits	search(org.apache.lucene.document.Document doc, org.apache.lucene.index.IndexReader reader) Searches for images similar to the given image, defined by the Document from the index.

从类继承的方法 net.semanticmetadata.lire.searchers.AbstractImageSearcher

relevanceFeedback, search

从类继承的方法 java.lang.Object

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

构造器详细资料

BitSamplingImageSearcher

public BitSamplingImageSearcher(int maximumHits,
                                java.lang.String featureFieldName,
                                java.lang.String hashesFieldName,
                                GlobalFeature feature)

Creates a new searcher for BitSampling based hashes.

参数:

maximumHits - how many hits the searcher shall return.

featureFieldName - the field hashFunctionsFileName of the feature.

hashesFieldName - the field hashFunctionsFileName of the hashes.

feature - an instance of the feature.

BitSamplingImageSearcher

public BitSamplingImageSearcher(int maximumHits,
                                GlobalFeature feature)

Creates a new searcher for BitSampling based hashes. The field names are inferred from the entries in //TODO

参数:

maximumHits - how many hits the searcher shall return.

feature - an instance of the feature.

BitSamplingImageSearcher

public BitSamplingImageSearcher(int maximumHits,
                                GlobalFeature feature,
                                boolean useFastSearch)

Creates a new searcher for BitSampling based hashes. The field names are inferred from the entries in //TODO

参数:

maximumHits - how many hits the searcher shall return.

feature - an instance of the feature.

useFastSearch - if true it only uses a random sample of hashes for the query and speeds up the search significantly.

BitSamplingImageSearcher

public BitSamplingImageSearcher(int maximumHits,
                                GlobalFeature feature,
                                int numHashedResults)

Creates a new searcher for BitSampling based hashes. The field names are inferred from the entries in //TODO

参数:

maximumHits - how many hits the searcher shall return.

feature - an instance of the feature.

numHashedResults - the number of candidate results retrieved from the index before re-ranking.

BitSamplingImageSearcher

public BitSamplingImageSearcher(int maximumHits,
                                java.lang.String featureFieldName,
                                java.lang.String hashesFieldName,
                                GlobalFeature feature,
                                int numHashedResults)

BitSamplingImageSearcher

public BitSamplingImageSearcher(int maximumHits,
                                java.lang.String featureFieldName,
                                java.lang.String hashesFieldName,
                                GlobalFeature feature,
                                java.io.InputStream hashes)

BitSamplingImageSearcher

public BitSamplingImageSearcher(int maximumHits,
                                java.lang.String featureFieldName,
                                java.lang.String hashesFieldName,
                                GlobalFeature feature,
                                java.io.InputStream hashes,
                                int numHashedResults)

方法详细资料

search

public ImageSearchHits search(java.awt.image.BufferedImage image,
                              org.apache.lucene.index.IndexReader reader)
                       throws java.io.IOException

从接口复制的说明: ImageSearcher

Searches for images similar to the given image.

参数:

image - the example image to search for.

reader - the IndexReader which is used to search through the images.

返回:

a sorted list of hits.

抛出:

java.io.IOException - in case exceptions in the reader occurs

search

public ImageSearchHits search(org.apache.lucene.document.Document doc,
                              org.apache.lucene.index.IndexReader reader)
                       throws java.io.IOException

从接口复制的说明: ImageSearcher

Searches for images similar to the given image, defined by the Document from the index.

参数:

doc - the example image to search for.

reader - the IndexReader which is used to dsearch through the images.

返回:

a sorted list of hits.

抛出:

java.io.IOException - in case exceptions in the reader occurs

findDuplicates

public ImageDuplicates findDuplicates(org.apache.lucene.index.IndexReader reader)
                               throws java.io.IOException

从接口复制的说明: ImageSearcher

Identifies duplicates in the database.

参数:

reader - the IndexReader which is used to dsearch through the images.

返回:

a sorted list of hits.

抛出:

java.io.IOException - in case the image could not be read from stream.