public string DownloadAndProcessImage(Uri uri, Rect regionPercentage)
{
var engine = new TesseractEngine(_tessdataPath, "hun");
byte[] imageData;
try
{
var client = new WebClient();
imageData = client.DownloadData(uri);
StatisticsCollector.GetInstance().IncrementOutgoingWebRequestCount();
_log.Debug("Image downloaded from `" + uri + "`. Size: " + imageData.Length + " Byte(s).");
}
catch (Exception e)
{
_log.Error("Failed to download image from `" + uri + "`. Error: e");
return("");
}
var bitmap = new Bitmap(new MemoryStream(imageData));
_log.Debug("Image size: " + bitmap.Size);
// Calculate image region
var region = new Tesseract.Rect(
(int)(regionPercentage.Left * bitmap.Width),
(int)(regionPercentage.Top * bitmap.Height),
(int)(regionPercentage.Width * bitmap.Width),
(int)(regionPercentage.Height * bitmap.Height));
_log.Debug("OCR region: " + region);
Page page = engine.Process(bitmap, region, PageSegMode.Auto);
string text = page.GetText();
_log.Debug("Processed text length: " + text.Length);
StatisticsCollector.GetInstance().IncrementOcredPageCount();
return(text);
}
public string DownloadAndProcessImage(Uri uri, Rect regionPercentage)
{
var engine = new TesseractEngine(_tessdataPath, "hun");
byte[] imageData;
try
{
var client = new WebClient();
imageData = client.DownloadData(uri);
StatisticsCollector.GetInstance().IncrementOutgoingWebRequestCount();
_log.Debug("Image downloaded from `" + uri + "`. Size: " + imageData.Length + " Byte(s).");
}
catch (Exception e)
{
_log.Error("Failed to download image from `" + uri + "`. Error: e");
return "";
}
var bitmap = new Bitmap(new MemoryStream(imageData));
_log.Debug("Image size: " + bitmap.Size);
// Calculate image region
var region = new Tesseract.Rect(
(int) (regionPercentage.Left*bitmap.Width),
(int) (regionPercentage.Top*bitmap.Height),
(int) (regionPercentage.Width*bitmap.Width),
(int) (regionPercentage.Height*bitmap.Height));
_log.Debug("OCR region: " + region);
Page page = engine.Process(bitmap, region, PageSegMode.Auto);
string text = page.GetText();
_log.Debug("Processed text length: " + text.Length);
StatisticsCollector.GetInstance().IncrementOcredPageCount();
return text;
}
