從里爾圖書館篩選功能

Question

我正在努力爲里爾圖書館找到一個篩選實現。我發現的唯一的事情就是上面的鏈接feature。我試圖理解我爲了提取圖像的過濾特徵而必須使用的東西。 有什麼想法我在這裏做什麼？ 我想是這樣的：

Extractor e = new Extractor(); 
    File img = new File("im.jpg"); 
    BufferedImage in = ImageIO.read(img); 
    BufferedImage newImage = new BufferedImage(in.getWidth(), 
      in.getHeight(), BufferedImage.TYPE_BYTE_GRAY); 

    List<Feature> fs1 = e.computeSiftFeatures(newImage); 
    System.out.println(fs1); 

但我已經有一個空的列表。

Answer 1

//Here is the revised answer for you it may help 

public class indexing { 

    String directory="your_image_dataset"; 
    String index="./images__idex";//where you will put the index 

    /* if you want to use BOVW based searching you can change the 
    numbers below but be careful */ 
    int numClusters = 2000; // number of visual words 
    int numDocForVocabulary = 200; 

    /* number of samples used for visual words vocabulary building  
    this function calls the document builder and indexer function (indexFiles below) 
    for each image in the data set */ 

    public void IndexImage() throws IOException{ 
     System.out.println("-< Getting files to index >--------------"); 
     List<String> images = FileUtils.getAllImages(new File(directory), true); 
     System.out.println("-< Indexing " + images.size() + " files >--------------"); 
     indexFiles(images, index);  
} 
/* this function builds Lucene document for each image passed to it for 
the extracted visual descriptors */ 

private void indexFiles(List<String> images, String index) 
throws FileNotFoundException, IOException {  

//first high level structure 
ChainedDocumentBuilder documentBuilder = new ChainedDocumentBuilder(); 
//type of document to be created here i included different types of visual features,  
//documentBuilder.addBuilder(new SurfDocumentBuilder()); 
//here choose either Surf or SIFT 
documentBuilder.addBuilder(new SiftDocumentBuilder()); 
documentBuilder.addBuilder(DocumentBuilderFactory.getEdgeHistogramBuilder()); 
documentBuilder.addBuilder(DocumentBuilderFactory.getJCDDocumentBuilder()); 
documentBuilder.addBuilder(DocumentBuilderFactory.getColorLayoutBuilder()); 

//IndexWriter creates the file for index storage 
IndexWriter iw = LuceneUtils.createIndexWriter(index, true); 
int count = 0; 
/*then each image in data set called up on the created document structure 
    (documentBuilder above and added to the index file by constructing the defined 
    document structure) */ 

for (String identifier : images) { 
    Document doc = documentBuilder.createDocument(new 
    FileInputStream(identifier), identifier); 

    iw.addDocument(doc);//adding document to index 
    iw.close();// closing the index writer 

/* For searching purpose you will read the index and by constructing an instance of 
    IndexReader she you defined different searching strategy which is available in Lire 
    Please check the brace and test it. */