public SearchOptions(string path, string keyword, RecognitionPrecision selectedPrecisionOCR, RecognitionLanguage selectedLanguageOCR,
bool caseSensitive, bool useOCR, bool useSubfolders, bool usePDF, bool useDOCX, bool useODT)
{
Path = path;
Keyword = keyword;
SelectedPrecisionOCR = selectedPrecisionOCR;
SelectedLanguageOCR = selectedLanguageOCR;
CaseSensitive = caseSensitive;
UseOCR = useOCR;
UseSubfolders = useSubfolders;
UsePDF = usePDF;
UseDOCX = useDOCX;
UseODT = useODT;
}
string ImageToText(byte[] imageBytes, RecognitionLanguage rl, RecognitionPrecision rp)
{
try
{
using var engine = new TesseractEngine(@"./Files", _optionService.TranslateLanguage(rl), EngineMode.Default);
using var img = _optionService.TranslatePrecision(rp).Item4 == System.Drawing.Imaging.ImageFormat.Tiff ?
Pix.LoadTiffFromMemory(imageBytes) : Pix.LoadFromMemory(imageBytes);
using var pager = engine.Process(img);
return(pager.GetText().ToString());
//System.Diagnostics.Debug.WriteLine("Mean confidence: {0}", pager.GetMeanConfidence());
//System.Diagnostics.Debug.WriteLine("Text {0}", text);
}
catch (Exception ee)
{
System.Diagnostics.Debug.WriteLine("Unexpected Error: " + ee.Message);
System.Diagnostics.Debug.WriteLine("Details: ");
System.Diagnostics.Debug.WriteLine(ee.ToString());
}
return("");
}
public (PageDimensions, RenderFlags, PixelFormat, ImageFormat) TranslatePrecision(RecognitionPrecision rp)
{
return rp switch
{
RecognitionPrecision.High or RecognitionPrecision.Default =>
(new PageDimensions(1080, 1920), RenderFlags.RenderAnnotations, PixelFormat.Format32bppArgb, ImageFormat.Png),
RecognitionPrecision.Medium =>
(new PageDimensions(720, 1280), RenderFlags.RenderAnnotations, PixelFormat.Format32bppArgb, ImageFormat.Jpeg),
RecognitionPrecision.Low =>
(new PageDimensions(720, 1280), RenderFlags.RenderAnnotations | RenderFlags.OptimizeTextForLcd | RenderFlags.Grayscale, PixelFormat.Format32bppRgb, ImageFormat.Bmp),
_ => (new PageDimensions(1080, 1920), RenderFlags.RenderAnnotations, PixelFormat.Format32bppArgb, ImageFormat.Png),
};
}