public virtual void TestTextFromPdfLayersFromMultiPagePdf()
{
String testName = "testTextFromPdfLayersFromMultiPagePdf";
String pdfPath = GetTargetDirectory() + testName + ".pdf";
IList <FileInfo> files = JavaUtil.ArraysAsList(new FileInfo(TEST_IMAGES_DIRECTORY + "german_01.jpg"), new FileInfo
(TEST_IMAGES_DIRECTORY + "tèst/noisy_01.png"), new FileInfo(TEST_IMAGES_DIRECTORY + "nümbérs.jpg"), new
FileInfo(TEST_IMAGES_DIRECTORY + "example_04.png"));
OcrPdfCreatorProperties properties = new OcrPdfCreatorProperties();
properties.SetImageLayerName("image");
properties.SetTextLayerName("text");
OcrPdfCreator ocrPdfCreator = new OcrPdfCreator(tesseractReader, properties);
PdfDocument doc = ocrPdfCreator.CreatePdf(files, GetPdfWriter(pdfPath));
NUnit.Framework.Assert.IsNotNull(doc);
int numOfPages = doc.GetNumberOfPages();
NUnit.Framework.Assert.AreEqual(numOfPages, files.Count);
IList <PdfLayer> layers = doc.GetCatalog().GetOCProperties(true).GetLayers();
NUnit.Framework.Assert.AreEqual(numOfPages * 2, layers.Count);
NUnit.Framework.Assert.AreEqual("image", layers[2].GetPdfObject().Get(PdfName.Name).ToString());
NUnit.Framework.Assert.AreEqual("text", layers[3].GetPdfObject().Get(PdfName.Name).ToString());
doc.Close();
// Text layer should contain all text
// Image layer shouldn't contain any text
String expectedOutput = "619121";
NUnit.Framework.Assert.AreEqual(expectedOutput, GetTextFromPdfLayer(pdfPath, "text", 3));
NUnit.Framework.Assert.AreEqual("", GetTextFromPdfLayer(pdfPath, "image", 3));
}
public virtual void TestTextFromPdfLayersFromMultiPageTiff()
{
String testName = "testTextFromPdfLayersFromMultiPageTiff";
bool preprocess = tesseractReader.GetTesseract4OcrEngineProperties().IsPreprocessingImages();
String path = TEST_IMAGES_DIRECTORY + "multîpage.tiff";
String pdfPath = GetTargetDirectory() + testName + ".pdf";
FileInfo file = new FileInfo(path);
tesseractReader.SetTesseract4OcrEngineProperties(tesseractReader.GetTesseract4OcrEngineProperties().SetPreprocessingImages
(false));
OcrPdfCreatorProperties properties = new OcrPdfCreatorProperties();
properties.SetTextLayerName("Text Layer");
properties.SetImageLayerName("Image Layer");
OcrPdfCreator ocrPdfCreator = new OcrPdfCreator(tesseractReader, properties);
PdfDocument doc = ocrPdfCreator.CreatePdf(JavaCollectionsUtil.SingletonList <FileInfo>(file), GetPdfWriter(
pdfPath));
NUnit.Framework.Assert.IsNotNull(doc);
int numOfPages = doc.GetNumberOfPages();
IList <PdfLayer> layers = doc.GetCatalog().GetOCProperties(true).GetLayers();
NUnit.Framework.Assert.AreEqual(numOfPages * 2, layers.Count);
NUnit.Framework.Assert.AreEqual("Image Layer", layers[2].GetPdfObject().Get(PdfName.Name).ToString());
NUnit.Framework.Assert.AreEqual("Text Layer", layers[3].GetPdfObject().Get(PdfName.Name).ToString());
doc.Close();
// Text layer should contain all text
// Image layer shouldn't contain any text
String expectedOutput = "Multipage\nTIFF\nExample\nPage 5";
NUnit.Framework.Assert.AreEqual(expectedOutput, GetTextFromPdfLayer(pdfPath, "Text Layer", 5));
NUnit.Framework.Assert.AreEqual("", GetTextFromPdfLayer(pdfPath, "Image Layer", 5));
NUnit.Framework.Assert.IsFalse(tesseractReader.GetTesseract4OcrEngineProperties().IsPreprocessingImages());
tesseractReader.SetTesseract4OcrEngineProperties(tesseractReader.GetTesseract4OcrEngineProperties().SetPreprocessingImages
(preprocess));
}