// ReSharper disable once UnusedMember.Local
private async Task LoadMem(int channelId, int documentId, OcrVoucher voucher)
{
using (var imageFile = System.IO.File.OpenRead(voucher.ImagePath))
{
var closureVoucher = voucher;
closureVoucher.ImageBuffer = new byte[imageFile.Length];
try
{
//read the image file into memory
await imageFile
.ReadAsync(closureVoucher.ImageBuffer, 0, (int)imageFile.Length)
.ContinueWith(t =>
{
//initialize processing in A2IA
if (t.IsCompleted && !t.IsFaulted)
{
a2IaEngine.ScrDefineImage(documentId, configuration.FileType, "MEM", closureVoucher.ImageBuffer);
closureVoucher.RequestId = (int)a2IaEngine.ScrOpenRequest(channelId, documentId);
}
else
{
throw t.Exception ?? new Exception("Could not process the image.");
}
});
}
catch (Exception ex)
{
Log.Error(ex, "An error has ocurred while processing the image for voucher {@voucherId}",
closureVoucher.Id);
if (closureVoucher.RequestId > 0)
{
a2IaEngine.ScrCloseRequest(closureVoucher.RequestId);
}
}
}
}
public void GetIcrChannelResult(OcrVoucher voucher)
{
var requestId = 0;
try
{
requestId = GetIcrChannelResult(ChannelId, voucher.RequestId, configuration.ChannelTimeout);
if (voucher.RequestId == requestId) Functions.GetResult(a2IaEngine, requestId, voucher);
CloseRequest(requestId);
}
catch (Exception ex)
{
var errorMessage = a2IaEngine.ScrGetLastError();
Log.Error(ex, "An error has ocurred while processing the image for voucher {@voucherId} with message {1}", voucher.Id, errorMessage);
if (requestId > 0) CloseRequest(requestId);
throw;
}
}
public void ProcessVoucher(OcrVoucher voucher)
{
try
{
LoadImage(DocumentId, voucher.ImagePath);
voucher.RequestId = OpenIcrChannel(ChannelId, DocumentId);
}
catch (Exception ex)
{
Log.Error(ex, "An error has ocurred while processing the image for voucher {@voucherId}", voucher.Id);
CloseChannel(ChannelId);
throw;
}
}
private string GetBatchId(OcrVoucher voucher)
{
return voucher.BatchId;
}
/// <summary>
/// Populate the OCR results into the metadata associated with the image
/// </summary>
/// <param name="a2IaEngine"></param>
/// <param name="resultId">OCR result Id</param>
/// <param name="voucher">Metadata of the image to be populated</param>
public static void GetResult(API a2IaEngine, int resultId, OcrVoucher voucher)
{
// A2iA amount recognition
if (a2IaEngine.GetStringProperty(resultId, Constants.EngineFields.Amount) == Constants.Enabled)
{
switch (voucher.VoucherType)
{
case VoucherType.Credit:
voucher.AmountResult.Result = a2IaEngine.GetStringProperty(resultId, string.Concat(Constants.ResultFields.CreditBase, "Amount"));
voucher.AmountResult.Score = a2IaEngine.GetStringProperty(resultId, string.Concat(Constants.ResultFields.CreditBase, "Score"));
break;
default:
voucher.AmountResult.Result = a2IaEngine.GetStringProperty(resultId, string.Concat(Constants.ResultFields.CheckBase, "Amount"));
voucher.AmountResult.Score = a2IaEngine.GetStringProperty(resultId, string.Concat(Constants.ResultFields.CheckBase, "Score"));
break;
}
var x1 = (int)((float)a2IaEngine.ObjectProperty[resultId, Constants.ResultFields.AmountLocationX1]);
var y1 = (int)((float)a2IaEngine.ObjectProperty[resultId, Constants.ResultFields.AmountLocationY1]);
var x2 = (int)((float)a2IaEngine.ObjectProperty[resultId, Constants.ResultFields.AmountLocationX2]);
var y2 = (int)((float)a2IaEngine.ObjectProperty[resultId, Constants.ResultFields.AmountLocationY2]);
voucher.AmountResult.Location = new Rectangle(x1, y1, x2 - x1, y2 - y1);
}
// A2iA codeline recognition
if (a2IaEngine.GetStringProperty(resultId, Constants.EngineFields.CodeLine) == Constants.Enabled)
{
voucher.CodelineResult.Result = a2IaEngine.GetStringProperty(resultId, Constants.ResultFields.CodelineRecognition);
voucher.CodelineResult.Score = a2IaEngine.GetStringProperty(resultId, Constants.ResultFields.CodelineConfidence);
var x1 = (int)((float)a2IaEngine.ObjectProperty[resultId, Constants.ResultFields.CodelineLocationX1]);
var y1 = (int)((float)a2IaEngine.ObjectProperty[resultId, Constants.ResultFields.CodelineLocationY1]);
var x2 = (int)((float)a2IaEngine.ObjectProperty[resultId, Constants.ResultFields.CodelineLocationX2]);
var y2 = (int)((float)a2IaEngine.ObjectProperty[resultId, Constants.ResultFields.CodelineLocationY2]);
voucher.CodelineResult.Location = new Rectangle(x1, y1, x2 - x1, y2 - y1);
}
// A2iA date recognition
if (a2IaEngine.GetStringProperty(resultId, Constants.EngineFields.Date) == Constants.Enabled)
{
var day = (uint)a2IaEngine.ObjectProperty[resultId, Constants.ResultFields.DateRecognitionDay];
var month = (uint)a2IaEngine.ObjectProperty[resultId, Constants.ResultFields.DateRecognitionMonth];
var year = (uint)a2IaEngine.ObjectProperty[resultId, Constants.ResultFields.DateRecognitionYear];
voucher.DateResult.Result = string.Format("{0}/{1}/{2}", day, month, year);
voucher.DateResult.Score = a2IaEngine.GetStringProperty(resultId, Constants.ResultFields.DateConfidence);
var x1 = (int)((float)a2IaEngine.ObjectProperty[resultId, Constants.ResultFields.DateLocationX1]);
var y1 = (int)((float)a2IaEngine.ObjectProperty[resultId, Constants.ResultFields.DateLocationY1]);
var x2 = (int)((float)a2IaEngine.ObjectProperty[resultId, Constants.ResultFields.DateLocationX2]);
var y2 = (int)((float)a2IaEngine.ObjectProperty[resultId, Constants.ResultFields.DateLocationY2]);
voucher.DateResult.Location = new Rectangle(x1, y1, x2 - x1, y2 - y1);
}
// Image Rotation
voucher.ImageRotation = (int)(float)a2IaEngine.ObjectProperty[resultId, Constants.ResultFields.OrientationCorrection];
Log.Verbose("v {0} - amt {1} score {2} - micr {3} score {4}", voucher.Id, voucher.AmountResult.Result, voucher.AmountResult.Score, voucher.CodelineResult.Result, voucher.CodelineResult.Score);
}
public Task GetResultAsync(int requestId, int documentId, int tableId, int channelId, OcrVoucher voucher)
{
return Task.Run(() =>
{
int resultId;
lock (processingLock)
{
resultId = GetIcrChannelResult(channelId, requestId, 3000);
}
if (resultId == requestId) Functions.GetResult(a2IaEngine, resultId, voucher);
//ReleaseResources(requestId, documentId, tableId, channelId);
a2IaEngine.ScrCloseRequest(requestId);
});
}
private string SetVoucherConfiguration(OcrVoucher voucher)
{
string documentTableFilename;
switch (voucher.VoucherType)
{
case VoucherType.Credit:
documentTableFilename = configuration.CreditTablePath;
break;
default:
documentTableFilename = configuration.DebitTablePath;
break;
}
return documentTableFilename;
}