void ShowDetectedRect()
{
labelStatus.Text = "";
labelDetectedRect.Text = "";
labelRectInfo.Text = "";
listBoxDetectedRect.Items.Clear();
if (_ImgCol != null &&
listBoxImg.SelectedIndex >= 0 &&
listBoxImg.SelectedIndex < _ImgCol.ImgList.Count &&
checkBoxDetect.Checked
)
{
LabeledImg labeledImg = _ImgCol.ImgList[listBoxImg.SelectedIndex];
if (labeledImg != null)
{
List <ScoredRect> ascoredRect = null;
DetectionResult detRes = DetectFaces(labeledImg);
if (detRes != null)
{
float eThreshold = trackBarThreshold.Value * _eStepSize;
if (radioButtonMergedRect.Checked)
{
ascoredRect = detRes.GetMergedRectList(eThreshold);
}
else
{
ascoredRect = detRes.GetRawRectList(eThreshold);
}
}
if (ascoredRect != null)
{
listBoxDetectedRect.SuspendLayout();
listBoxDetectedRect.Items.Clear();
labelDetectedRect.Text = ascoredRect.Count + " rectangle(s)";
foreach (ScoredRect rect in ascoredRect)
{
listBoxDetectedRect.Items.Add(rect);
}
listBoxDetectedRect.ResumeLayout();
}
}
}
}
private void ImgListBoxDrawItem(object sender, DrawItemEventArgs e)
{
if (e != null && _ImgCol != null && e.Index >= 0 && e.Index < _ImgCol.ImgList.Count)
{
LabeledImg labeledImg = _ImgCol.ImgList[e.Index];
Bitmap img = new Bitmap(labeledImg.FileName);
Rectangle rectDraw = e.Bounds;
// offset
rectDraw.Inflate(-1, 0);
// draw a boundary if selected
if ((e.State & DrawItemState.Selected) != 0)
{
e.Graphics.DrawRectangle(new Pen(Color.Blue), rectDraw);
}
else
{
e.Graphics.DrawRectangle(new Pen(Color.White), rectDraw);
}
// offset
rectDraw.Offset(5, 5);
rectDraw.Inflate(-10, -10);
Rectangle rect = rectDraw;
if ((img.Width * rectDraw.Height) > (img.Height * rectDraw.Width))
{
rect.Width = rectDraw.Width;
rect.Height = ((img.Height * rectDraw.Width) / img.Width);
}
else
{
rect.Height = rectDraw.Height;
rect.Width = ((img.Width * rectDraw.Height) / img.Height);
}
rect.X += (rectDraw.Width - rect.Width) / 2;
rect.Y += (rectDraw.Height - rect.Height) / 2;
e.Graphics.DrawImage(img, rect);
e.Graphics.DrawString((e.Index + 1).ToString(),
new Font("Arial", 14),
new SolidBrush(Color.Maroon),
new PointF(rectDraw.X + 5, rectDraw.Y + 5));
}
}
DetectionResult DetectFaces(LabeledImg labeledImg)
{
DetectionResult detRes = null;
if (checkBoxDetect.Checked)
{
try
{
labelStatus.Text = "Detecting...";
Application.DoEvents();
Cursor = Cursors.WaitCursor;
detRes = labeledImg.GetDetectionResult(_faceDetect);
if (detRes != null)
{
labelStatus.Text = "Detection Time: " + detRes.tmDetection.Ticks / 10000 + " msec";
}
else
{
labelStatus.Text = "Failed!";
}
Cursor = Cursors.Default;
}
catch (Exception ex)
{
Cursor = Cursors.Default;
MessageBox.Show(ex.Message);
return(null);
}
}
return(detRes);
}
void RenderImage(Graphics graf)
{
if (_ImgCol == null ||
listBoxImg.SelectedIndex < 0 ||
listBoxImg.SelectedIndex >= _ImgCol.ImgList.Count
)
{
_fImgDirty =
_fDetectionDirty = false;
return;
}
LabeledImg labeledImg = _ImgCol.ImgList[listBoxImg.SelectedIndex];
// render the image
if (_fImgDirty)
{
labelImgName.Text = labeledImg.FileName;
Rectangle rect = labelImageBorder.Bounds;
rect.Width = labelHeader.Left - 1 - labelImageBorder.Bounds.Left;
rect.Height = labelStatus.Top - 1 - labelImageBorder.Bounds.Top;
graf.FillRectangle(new SolidBrush(BackColor), rect);
labeledImg.Render(graf, labelImageBorder.Bounds);
if (checkBoxLabel.Checked)
{
labeledImg.RenderAnnotations(graf, labelImageBorder.Bounds);
}
_fImgDirty = false;
}
if (_fDetectionDirty)
{
if (checkBoxDetect.Checked)
{
DetectionResult detRes = DetectFaces(labeledImg);
if (detRes != null)
{
float eThreshold = trackBarThreshold.Value * _eStepSize;
if (radioButtonRawRectangles.Checked)
{
detRes.RenderRawRect(eThreshold, graf, labelImageBorder.Bounds);
}
if (radioButtonMergedRect.Checked)
{
detRes.RenderMergedRect(eThreshold, graf, labelImageBorder.Bounds);
}
}
if (listBoxDetectedRect.Items.Count > 0)
{
ScoredRect scoredRect = (ScoredRect)listBoxDetectedRect.SelectedItem;
if (scoredRect != null)
{
labelRectInfo.Text = "Rect #" + listBoxDetectedRect.SelectedIndex + "\r\n" +
scoredRect.ToString() + "\r\n" +
"Score: " + scoredRect.Score;
scoredRect.Render(graf, labelImageBorder.Bounds, true);
labeledImg.Render(graf, scoredRect.Bounds, labelFaceBorder.Bounds);
labeledImg.Render(graf, scoredRect.Bounds, labelFaceBorderBig.Bounds);
}
}
}
_fDetectionDirty = false;
}
}
