public static async Task <string> GetFullText2(string pathToImg)
{
Bitmap bmp = new Bitmap(pathToImg);
int width = bmp.Width;
int height = bmp.Height;
using (Graphics g = Graphics.FromImage(bmp))
{
// copy rectangle from screen (doesn't include cursor)
using (var stream = new Windows.Storage.Streams.InMemoryRandomAccessStream())
{
//These steps to get to a SoftwareBitmap are aweful!
bmp.Save(stream.AsStream(), System.Drawing.Imaging.ImageFormat.Bmp);//choose the specific image format by your own bitmap source
Windows.Graphics.Imaging.BitmapDecoder decoder = await Windows.Graphics.Imaging.BitmapDecoder.CreateAsync(stream);
SoftwareBitmap bitmap = await decoder.GetSoftwareBitmapAsync();
OcrResult ocrResult = await _ocrEngine.RecognizeAsync(bitmap);
for (int i = 0; i < ocrResult.Lines.Count; i++)
{
OcrLine line = ocrResult.Lines[i];
}
}
}
return(string.Empty);
}
public static List <string> GetWords(OcrLine line)
{
List <string> words = new List <string>();
foreach (OcrWord w in line.Words)
{
words.Add(w.Text);
}
return(words);
}
private List <OcrLine> GetSingleLine(IEnumerable <OcrLine> lines)
{
var line = new OcrLine()
{
Id = 1,
ParentRegion = lines.First().ParentRegion,
Text = string.Join("\n", lines.Select(i => i.Text)),
Words = lines.SelectMany(i => i.Words).ToList(),
Location = new OcrLocation()
{
X = lines.Min(i => i.Location.X),
Y = lines.Min(i => i.Location.Y),
Width = lines.Min(i => i.Location.XBound) - lines.Min(i => i.Location.X),
Height = lines.Min(i => i.Location.YBound) - lines.Min(i => i.Location.Y)
}
};
return(new List <OcrLine>(new[] { line }));
}
private async void RenderPage(PdfPage pdfPage)
{
Stopwatch sw = new Stopwatch();
sw.Start();
canvas.Children.Clear();
await pdfPage.PreparePageAsync();
StorageFolder tempFolder = ApplicationData.Current.TemporaryFolder;
StorageFile jpgFile = await tempFolder.CreateFileAsync(Guid.NewGuid().ToString() + ".png", CreationCollisionOption.GenerateUniqueName);
PdfPageRenderOptions renderOptions = new PdfPageRenderOptions();
renderOptions.DestinationHeight = (uint)(pdfPage.Size.Height * 2.0);
renderOptions.DestinationWidth = (uint)(pdfPage.Size.Width * 2.0);
canvas.Width = renderOptions.DestinationWidth;
canvas.Height = renderOptions.DestinationHeight;
if (jpgFile != null)
{
IRandomAccessStream randomStream = await jpgFile.OpenAsync(FileAccessMode.ReadWrite);
await pdfPage.RenderToStreamAsync(randomStream, renderOptions);
await randomStream.FlushAsync();
randomStream.Dispose();
pdfPage.Dispose();
//await DisplayImageFileAsync(jpgFile);
}
SoftwareBitmap softwareBitmap;
BitmapImage image = new BitmapImage();
ImageBrush backgroundBrush = new ImageBrush();
using (IRandomAccessStream stream = await jpgFile.OpenAsync(FileAccessMode.Read))
{
// Create the decoder from the stream
BitmapDecoder decoder = await BitmapDecoder.CreateAsync(stream);
image.SetSource(stream);
backgroundBrush.ImageSource = image;
// Get the SoftwareBitmap representation of the file
softwareBitmap = await decoder.GetSoftwareBitmapAsync();
}
OcrEngine engine = OcrEngine.TryCreateFromUserProfileLanguages();
var result = await engine.RecognizeAsync(softwareBitmap);
textBox.Text = "";
var left = canvas.GetValue(Canvas.LeftProperty);
var top = canvas.GetValue(Canvas.TopProperty);
foreach (OcrLine line in result.Lines)
{
Rectangle lineRect = new Rectangle();
textBox.Text += line.Text + "\r\n";
foreach (OcrWord word in line.Words)
{
Rectangle r = new Rectangle();
r.Margin = new Thickness(word.BoundingRect.Left, word.BoundingRect.Top, 0.0, 0.0);
r.Width = word.BoundingRect.Width;
r.Height = word.BoundingRect.Height;
r.Stroke = new SolidColorBrush(Colors.Blue);
canvas.Children.Add(r);
canvas.Background = backgroundBrush;
}
}
// Looking for line "Duration of agreement"
for (int i = 0; i < result.Lines.Count; i++)
{
OcrLine line = result.Lines[i];
if (line.Text.Contains("Customer Name"))
{
clientName.Text = line.Text.Substring(13);
//MessageDialog dlg = new MessageDialog(clientName.Text);
//await dlg.ShowAsync();
}
}
sw.Stop();
MessageDialog md = new MessageDialog(string.Format("Page processed in {0} milliseconds", sw.ElapsedMilliseconds));
await md.ShowAsync();
}
public static string GetLineAsString(OcrLine line)
{
List <string> words = GetWords(line);
return(words.Count > 0 ? string.Join(" ", words) : string.Empty);
}