com.groupdocs.watermark.search

This search criteria uses DCT based perceptual image hash for calculating image similarity.

Learn more:

• Searching watermarks

The following example demonstrates how to search for images in the attached files (pdf).

WatermarkerSettings settings = new WatermarkerSettings();
   settings.setSearchableObjects(new SearchableObjects());
   settings.getSearchableObjects().setPdfSearchableObjects(PdfSearchableObjects.All);
   PdfLoadOptions loadOptions = new PdfLoadOptions();
   Watermarker watermarker = new Watermarker("D:\\test.pdf", loadOptions);
   
   // Specify sample image to compare document images with
   ImageSearchCriteria criteria = new ImageDctHashSearchCriteria("D:\\sample.png");
   // Search for similar images
   PossibleWatermarkCollection possibleWatermarks = watermarker.search(criteria);
   // Remove or modify found image watermarks
   // ...
   
   watermarker.close();