public virtual void TestDefaultTessDataPathValidationForLib()
{
NUnit.Framework.Assert.That(() => {
String path = TEST_IMAGES_DIRECTORY + "numbers_01.jpg";
FileInfo imgFile = new FileInfo(path);
Tesseract4LibOcrEngine engine = new Tesseract4LibOcrEngine(new Tesseract4OcrEngineProperties());
engine.DoImageOcr(imgFile);
}
, NUnit.Framework.Throws.InstanceOf <Tesseract4OcrException>().With.Message.EqualTo(Tesseract4OcrException.PATH_TO_TESS_DATA_IS_NOT_SET))
;
}
public virtual void TestOcrResultForSinglePageForNullImage()
{
NUnit.Framework.Assert.That(() => {
Tesseract4LibOcrEngine tesseract4LibOcrEngine = GetTesseract4LibOcrEngine();
tesseract4LibOcrEngine.SetTesseract4OcrEngineProperties(new Tesseract4OcrEngineProperties().SetPathToTessData
(GetTessDataDirectory()));
tesseract4LibOcrEngine.InitializeTesseract(OutputFormat.TXT);
tesseract4LibOcrEngine.DoTesseractOcr(null, null, OutputFormat.HOCR);
}
, NUnit.Framework.Throws.InstanceOf <Tesseract4OcrException>().With.Message.EqualTo(Tesseract4OcrException.TESSERACT_FAILED))
;
}
public virtual void TestGetOcrResultAsStringForFile()
{
String path = TEST_IMAGES_DIRECTORY + "numbers_01.jpg";
String expected = "619121";
FileInfo imgFile = new FileInfo(path);
Tesseract4LibOcrEngine tesseract4LibOcrEngine = GetTesseract4LibOcrEngine();
tesseract4LibOcrEngine.SetTesseract4OcrEngineProperties(new Tesseract4OcrEngineProperties().SetPathToTessData
(GetTessDataDirectory()));
tesseract4LibOcrEngine.InitializeTesseract(OutputFormat.TXT);
String result = new TesseractOcrUtil().GetOcrResultAsString(tesseract4LibOcrEngine.GetTesseractInstance(),
imgFile, OutputFormat.TXT);
NUnit.Framework.Assert.IsTrue(result.Contains(expected));
}
public virtual void TestTesseract4OcrForPix()
{
String path = TEST_IMAGES_DIRECTORY + "numbers_02.jpg";
String expected = "0123456789";
FileInfo imgFile = new FileInfo(path);
Pix pix = ImagePreprocessingUtil.ReadPix(imgFile);
Tesseract4LibOcrEngine tesseract4LibOcrEngine = GetTesseract4LibOcrEngine();
tesseract4LibOcrEngine.SetTesseract4OcrEngineProperties(new Tesseract4OcrEngineProperties().SetPathToTessData
(GetTessDataDirectory()));
tesseract4LibOcrEngine.InitializeTesseract(OutputFormat.TXT);
String result = new TesseractOcrUtil().GetOcrResultAsString(tesseract4LibOcrEngine.GetTesseractInstance(),
pix, OutputFormat.TXT);
NUnit.Framework.Assert.IsTrue(result.Contains(expected));
}
public virtual void TestOcrResultConditions()
{
Tesseract4LibOcrEngine tesseract4LibOcrEngine = GetTesseract4LibOcrEngine();
tesseract4LibOcrEngine.SetTesseract4OcrEngineProperties(new Tesseract4OcrEngineProperties().SetPathToTessData
(GetTessDataDirectory()));
tesseract4LibOcrEngine.InitializeTesseract(OutputFormat.HOCR);
Pix pix = null;
NUnit.Framework.Assert.IsNull(new TesseractOcrUtil().GetOcrResultAsString(tesseract4LibOcrEngine.GetTesseractInstance
(), pix, OutputFormat.HOCR));
FileInfo file = null;
NUnit.Framework.Assert.IsNull(new TesseractOcrUtil().GetOcrResultAsString(tesseract4LibOcrEngine.GetTesseractInstance
(), file, OutputFormat.HOCR));
System.Drawing.Bitmap bi = null;
NUnit.Framework.Assert.IsNull(new TesseractOcrUtil().GetOcrResultAsString(tesseract4LibOcrEngine.GetTesseractInstance
(), bi, OutputFormat.HOCR));
}
