/// <summary>
/// Handling of the CaptureTaken "event" from the ICaptureHost
/// We do the OCR here!
/// </summary>
/// <param name="surface">Has the Image and the capture details</param>
public string DoOcr(ISurface surface)
{
var outputSettings = new SurfaceOutputSettings(OutputFormats.bmp, 0, true)
{
ReduceColors = true,
SaveBackgroundOnly = true
};
// We only want the background
// Force Grayscale output
outputSettings.Effects.Add(new GrayscaleEffect());
// Also we need to check the size, resize if needed to 130x130 this is the minimum
if (surface.Screenshot.Width < MinWidth || surface.Screenshot.Height < MinHeight)
{
var addedWidth = MinWidth - surface.Screenshot.Width;
if (addedWidth < 0)
{
addedWidth = 0;
}
var addedHeight = MinHeight - surface.Screenshot.Height;
if (addedHeight < 0)
{
addedHeight = 0;
}
IEffect effect = new ResizeCanvasEffect(addedWidth / 2, addedWidth / 2, addedHeight / 2, addedHeight / 2);
outputSettings.Effects.Add(effect);
}
var filePath = ImageOutput.SaveToTmpFile(surface, outputSettings, null);
Log.Debug().WriteLine("Saved tmp file to: " + filePath);
var text = "";
try
{
var processStartInfo = new ProcessStartInfo(_ocrCommand, "\"" + filePath + "\" " + _ocrConfiguration.Language + " " + _ocrConfiguration.Orientimage + " " + _ocrConfiguration.StraightenImage)
{
CreateNoWindow = true,
RedirectStandardOutput = true,
UseShellExecute = false
};
using (var process = Process.Start(processStartInfo))
{
if (process != null)
{
process.WaitForExit(30 * 1000);
if (process.ExitCode == 0)
{
text = process.StandardOutput.ReadToEnd();
}
}
}
}
catch (Exception e)
{
Log.Error().WriteLine(e, "Error while calling Microsoft Office Document Imaging (MODI) to OCR: ");
}
finally
{
if (File.Exists(filePath))
{
Log.Debug().WriteLine("Cleaning up tmp file: " + filePath);
File.Delete(filePath);
}
}
if (string.IsNullOrEmpty(text))
{
Log.Info().WriteLine("No text returned");
return(null);
}
// For for BUG-1884:
text = text.Trim();
try
{
Log.Debug().WriteLine("Pasting OCR Text to Clipboard: {0}", text);
// Paste to Clipboard (the Plugin currently doesn't have access to the ClipboardHelper from Greenshot
IDataObject ido = new DataObject();
ido.SetData(DataFormats.Text, true, text);
Clipboard.SetDataObject(ido, true);
}
catch (Exception e)
{
Log.Error().WriteLine(e, "Problem pasting text to clipboard: ");
}
return(text);
}
public string DoOCR(ISurface surface)
{
string filePath = null;
SurfaceOutputSettings outputSettings = new SurfaceOutputSettings(OutputFormat.bmp, 0, true);
outputSettings.ReduceColors = true;
// We only want the background
outputSettings.SaveBackgroundOnly = true;
// Force Grayscale output
outputSettings.Effects.Add(new GrayscaleEffect());
// Also we need to check the size, resize if needed to 130x130 this is the minimum
if (surface.Image.Width < MIN_WIDTH || surface.Image.Height < MIN_HEIGHT)
{
int addedWidth = MIN_WIDTH - surface.Image.Width;
if (addedWidth < 0)
{
addedWidth = 0;
}
int addedHeight = MIN_HEIGHT - surface.Image.Height;
if (addedHeight < 0)
{
addedHeight = 0;
}
IEffect effect = new ResizeCanvasEffect(addedWidth / 2, addedWidth / 2, addedHeight / 2, addedHeight / 2);
outputSettings.Effects.Add(effect);
}
filePath = ImageOutput.SaveToTmpFile(surface, outputSettings, null);
LOG.Debug("Saved tmp file to: " + filePath);
string text = "";
try {
ProcessStartInfo processStartInfo = new ProcessStartInfo(OCR_COMMAND, "\"" + filePath + "\" " + config.Language + " " + config.Orientimage + " " + config.StraightenImage);
processStartInfo.CreateNoWindow = true;
processStartInfo.RedirectStandardOutput = true;
processStartInfo.UseShellExecute = false;
using (Process process = Process.Start(processStartInfo)) {
process.WaitForExit(30 * 1000);
if (process.ExitCode == 0)
{
text = process.StandardOutput.ReadToEnd();
}
}
} catch (Exception e) {
LOG.Error("Error while calling Microsoft Office Document Imaging (MODI) to OCR: ", e);
} finally {
if (File.Exists(filePath))
{
LOG.Debug("Cleaning up tmp file: " + filePath);
File.Delete(filePath);
}
}
if (text == null || text.Trim().Length == 0)
{
LOG.Info("No text returned");
return(null);
}
try {
LOG.DebugFormat("Pasting OCR Text to Clipboard: {0}", text);
// Paste to Clipboard (the Plugin currently doesn't have access to the ClipboardHelper from Greenshot
IDataObject ido = new DataObject();
ido.SetData(DataFormats.Text, true, text);
Clipboard.SetDataObject(ido, true);
} catch (Exception e) {
LOG.Error("Problem pasting text to clipboard: ", e);
}
return(text);
}
