/// <summary>
/// Do work
/// </summary>
private void ProcessImageWorker(object state)
{
ScannedImage scannedImage = null;
Image original = null;
try
{
lock (m_lockObject)
{
using (var ms = new MemoryStream((byte[])state))
{
var img = Image.FromStream(ms);
img.RotateFlip(RotateFlipType.Rotate270FlipNone);
scannedImage = new ScannedImage(img);
}
}
scannedImage.Analyze();
original =
new ResizeNearestNeighbor(scannedImage.Image.Width / 4, scannedImage.Image.Height / 4).Apply(
(Bitmap)scannedImage.Image);
}
catch
{
if (scannedImage != null)
{
scannedImage.Dispose();
}
return; // Abort
}
try
{
// Add an Error entry
if (!scannedImage.IsScannable)
{
var lsv = new ListViewItem();
lsv.Tag = 2;
lsv.SubItems.Add(new ListViewItem.ListViewSubItem(lsv,
"Scanned image doesn't appear to be a scannable form."));
lock (m_lockObject)
{
m_uiResults.Add(lsv, original);
}
}
else
{
var engine = new Engine();
var templateFile = Path.Combine(Path.GetDirectoryName(Assembly.GetEntryAssembly().Location),
scannedImage.TemplateName + ".mxml");
if (!File.Exists(templateFile))
{
var lsv = new ListViewItem();
lsv.Tag = 0;
lsv.SubItems.Add(new ListViewItem.ListViewSubItem(lsv,
"Template file " + templateFile + " is missing"));
lock (m_lockObject)
{
m_uiResults.Add(lsv, original);
}
return;
}
// Apply template
var template = OmrTemplate.Load(templateFile);
var pageData = engine.ApplyTemplate(
template,
scannedImage);
// Draw the page data
ICanvas canvas = new DesignerCanvas();
canvas.Add(new OutputVisualizationStencil(pageData));
original.Dispose();
original = new Bitmap((int)template.BottomRight.X, (int)template.BottomLeft.Y,
PixelFormat.Format24bppRgb);
using (var g = Graphics.FromImage(original))
{
float width = template.TopRight.X - template.TopLeft.X,
height = template.BottomLeft.Y - template.TopLeft.Y;
g.DrawImage(scannedImage.Image, template.TopLeft.X, template.TopLeft.Y, width, height);
canvas.DrawTo(g);
}
// Save original analyzed image
try
{
var tPath = Path.GetTempFileName();
original.Save(tPath);
pageData.AnalyzedImage = tPath;
}
catch
{
}
var oldOriginal = original;
original =
new ResizeNearestNeighbor(scannedImage.Image.Width / 2, scannedImage.Image.Height / 2).Apply(
(Bitmap)original);
oldOriginal.Dispose();
lock (m_lockObject)
{
if (pageData.Outcome == OmrScanOutcome.Failure)
{
var lsv = new ListViewItem();
lsv.Tag = 0;
lsv.SubItems.Add(new ListViewItem.ListViewSubItem(lsv, pageData.ErrorMessage));
lock (m_lockObject)
{
m_uiResults.Add(lsv, original);
}
}
else
{
var validation = pageData.Validate(template);
var lsv = new ListViewItem();
lsv.Tag = validation.IsValid ? 2 : 1;
if (!validation.IsValid)
{
lsv.SubItems.Add(validation.Issues[0]);
}
lsv.Tag = pageData;
lock (m_lockObject)
{
m_executionQueue.Enqueue(new KeyValuePair <OmrTemplate, OmrPageOutput>(template, pageData));
}
lock (m_lockObject)
{
m_uiResults.Add(lsv, original);
}
}
m_scannedPages.Pages.Add(pageData);
}
}
}
catch (Exception e)
{
var lsv = new ListViewItem();
lsv.Tag = 0;
lsv.SubItems.Add(e.Message);
lock (m_lockObject)
{
m_uiResults.Add(lsv, original);
}
}
}