/// <summary>
/// Creates and initializes a new <see cref="Tesseract"/> object.
/// </summary>
/// <param name="dataDirectory">The path to Tesseract data directory.</param>
/// <returns>
/// The <see cref="Tesseract"/> object this method creates.
/// </returns>
public static Tesseract Create(string dataDirectory)
{
if (string.IsNullOrEmpty(dataDirectory))
{
dataDirectory = Globals.LookupDataDirectory("Tesseract");
}
// ensure the data directory exist
if (!Directory.Exists(dataDirectory))
{
throw new DirectoryNotFoundException(
string.Format(
CultureInfo.InvariantCulture,
Genix.Core.Properties.Resources.E_DirectoryNotFound,
dataDirectory));
}
TesseractHandle handle = NativeMethods.TessBaseAPICreate();
try
{
if (NativeMethods.TessBaseAPIInit2(handle, dataDirectory, "eng", OcrEngineMode.LstmOnly) != 0)
{
throw new InvalidOperationException("Cannot initialize Tesseract engine.");
}
}
catch
{
handle?.Dispose();
throw;
}
return(new Tesseract(handle));
}
public static extern int TessBaseAPIRecognize(TesseractHandle handle, IntPtr monitor);
public static extern PageIterator TessBaseAPIAnalyseLayout(TesseractHandle handle);
public static extern void TessBaseAPISetPageSegMode(TesseractHandle handle, PageSegmentationMode mode);
public static extern void TessBaseAPISetImage2(TesseractHandle handle, SafeHandle pix);
public static extern void TessBaseAPIClearPersistentCache(TesseractHandle handle);
public static extern void TessBaseAPIClearAdaptiveClassifier(TesseractHandle handle);
public static extern void TessBaseAPIClear(TesseractHandle handle);
public static extern int TessBaseAPIInit3(
TesseractHandle handle,
[MarshalAs(UnmanagedType.LPStr)] string datapath,
[MarshalAs(UnmanagedType.LPStr)] string language);
public static extern int TessBaseAPIInit2(
TesseractHandle handle,
[MarshalAs(UnmanagedType.LPStr)] string datapath,
[MarshalAs(UnmanagedType.LPStr)] string language,
OcrEngineMode oem);
public static extern ResultIterator TessBaseAPIGetIterator(TesseractHandle handle);
/// <summary>
/// Initializes a new instance of the <see cref="Tesseract"/> class.
/// </summary>
/// <param name="handle">The pointer to native Tesseract object.</param>
private Tesseract(TesseractHandle handle)
{
this.handle = handle;
}