public static async Task <NewOcrResult.Rootobject> DoRecognizeText(string imageUrl)
{
try
{
using (HttpClient hc = new HttpClient())
{
ByteArrayContent content = CreateHeader(hc, imageUrl);
HttpResponseMessage resp = await hc.PostAsync(OcrEndPointV2, content);
string json = string.Empty;
if (resp.StatusCode == System.Net.HttpStatusCode.Accepted)
{
var headers = resp.Headers;
foreach (var kv in headers)
{
if (kv.Key == "Operation-Location")
{
string url = kv.Value.First();
while (true)
{
// check status every 200ms
await Task.Delay(200);
json = await CheckStatus(url);
if (!string.IsNullOrEmpty(json))
{
break;
}
}
break;
}
}
}
if (string.IsNullOrEmpty(json))
{
return(null);
}
else
{
NewOcrResult.Rootobject ro = Newtonsoft.Json.JsonConvert.DeserializeObject <NewOcrResult.Rootobject>(json);
return(ro);
}
}
}
catch (Exception ex)
{
Debug.Write(ex.Message);
return(null);
}
}
private async void btn_OCR_Click(object sender, RoutedEventArgs e)
{
this.Version = GetVersion();
this.Language = GetLanguage();
if (Version == "OCR")
{
ocrResult = await CognitiveServiceAgent.DoOCR(this.tb_Url.Text, Language);
foreach (OcrResult.Region region in ocrResult.regions)
{
foreach (OcrResult.Line line in region.lines)
{
if (line.Convert())
{
Rectangle rect = new Rectangle()
{
Margin = new Thickness(line.BB[0], line.BB[1], 0, 0),
Width = line.BB[2],
Height = line.BB[3],
Stroke = Brushes.Red,
//Fill =Brushes.White
};
this.canvas_1.Children.Add(rect);
}
}
}
}
else
{
newOcrResult = await CognitiveServiceAgent.DoRecognizeText(this.tb_Url.Text);
// 1 - erase the original text
foreach (NewOcrResult.Line line in newOcrResult.recognitionResult.lines)
{
Polygon p = new Polygon();
PointCollection pc = new PointCollection();
pc.Add(new Point(line.boundingBox[0], line.boundingBox[1]));
pc.Add(new Point(line.boundingBox[2], line.boundingBox[3]));
pc.Add(new Point(line.boundingBox[4], line.boundingBox[5]));
pc.Add(new Point(line.boundingBox[6], line.boundingBox[7]));
p.Points = pc;
p.Stroke = Brushes.Red;
this.canvas_1.Children.Add(p);
}
}
}