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// For complete examples and data files, please go to https://github.com/groupdocs-comparison/GroupDocs.Comparison-for-Java
String sourcePath = Utilities.sourcePath + sourceFile;
String targetPath = Utilities.targetPath + targetFile;		
//Open files
ComparisonDjvuImage sourceImage = new ComparisonDjvuImage(sourcePath);
ComparisonDjvuImage targetImage = new ComparisonDjvuImage(targetPath);		 
//Create instance of setting
ImagingComparisonSettings settings = new ImagingComparisonSettings();		 
//Accuracy by X coordinate
settings.setAccuracyX(200);		 
//Accuracy by Y coordinate
settings.setAccuracyY(200);		 
//filling density color changed objects
//settings.setSaprayFulness(10);		 
//Fill color for rectangles
settings.setRectangleColor(Color.RED);		 
//Compare
IImageCompareResult cr = sourceImage.compareWith(targetImage,settings);
IPdfDocument resultPdf = cr.getPdfDocument();

//save results into a file
resultPdf.save(Utilities.outputFileName(extension));