private unsafe Target[] SearchFaces()
{
IntPtr retTarget = IntPtr.Zero;
int count = NativeIconExtractor.SearchFaces(ref retTarget);
if (count <= 0) return new Target[0];
Target* pTarget = (Target*)retTarget;
IList<Target> targets = new List<Target>();
for (int i = 0; i < count; i++)
{
Target face = pTarget[i];
targets.Add(face);
}
Target[] tgArr = new Target[targets.Count];
targets.CopyTo(tgArr, 0);
return tgArr;
}
private void DetectMotion()
{
DateTime lastTime = DateTime.Now.AddMinutes(-3);
CvVideoWriter videoWriter = null;
uint count = 0;
while (true)
{
Frame newFrame = GetNewFrame();
if (newFrame.image != IntPtr.Zero)
{
DateTime dtFrame = DateTime.FromBinary(newFrame.timeStamp);
IplImage ipl = new IplImage(newFrame.image);
ipl.IsEnabledDispose = false;
//new minute start, create new vide file
if (dtFrame.Minute != lastTime.Minute)
{
if (videoWriter != null)
{
Cv.ReleaseVideoWriter(videoWriter);
videoWriter = null;
}
videoWriter = Cv.CreateVideoWriter(
@"d:\" + dtFrame.Minute + ".avi",
"XVID",
10,
ipl.Size
);
System.Diagnostics.Debug.WriteLine(@"d:\" + dtFrame.Minute + ".avi");
}
videoWriter.WriteFrame(ipl);
lastTime = dtFrame;
Frame frameToProcess = new Frame();
bool groupCaptured = false;
count++;
if (count % 5 == 0)
{
if (Properties.Settings.Default.DetectMotion)
groupCaptured =
MotionDetect.MotionDetect.PreProcessFrame(newFrame, ref frameToProcess);
else
groupCaptured = NoneMotionDetect.PreProcessFrame(newFrame, ref frameToProcess);
}
else
{
Cv.Release(ref newFrame.image);
}
count %= uint.MaxValue;
if (IsStaticFrame(frameToProcess))
{
Cv.Release(ref frameToProcess.image);
}
else
{
SaveFrame(frameToProcess);
NativeIconExtractor.AddInFrame(frameToProcess);
motionFrames.Enqueue(frameToProcess);
}
if (groupCaptured)
{
Target[] tgts = SearchFaces();
//remove duplicated faces
int upLimit = tgts.Length;
if (Properties.Settings.Default.DetectMotion
&& Properties.Settings.Default.removeDuplicatedFace)
{
upLimit = Math.Min(upLimit, Properties.Settings.Default.MaxDupFaces);
}
Target[] removed = new Target[upLimit];
Array.ConstrainedCopy(tgts, 0, removed, 0, upLimit);
ImageDetail[] details = this.SaveImage(removed);
this.screen.ShowImages(details);
Frame[] frames = motionFrames.ToArray();
motionFrames.Clear();
//release memory
Array.ForEach(frames, f => Cv.Release(ref f.image));
}
}
else
goDetectMotion.WaitOne();
}
}
unsafe ImageDetail[] SaveImage(Target[] targets)
{
IList<ImageDetail> imgs = new List<ImageDetail>();
foreach (Target t in targets)
{
Frame frame = t.BaseFrame;
DateTime dt = DateTime.FromBinary(frame.timeStamp);
for (int j = 0; j < t.FaceCount; ++j)
{
IntPtr* f = ((IntPtr*)(t.FaceData)) + j;
IplImage aFace = new IplImage(*f);
aFace.IsEnabledDispose = false;
string facePath = GetFacePath(frame, dt, j);
aFace.SaveImage(facePath);
imgs.Add(ImageDetail.FromPath(facePath));
}
}
ImageDetail[] details = new ImageDetail[imgs.Count];
imgs.CopyTo(details, 0);
return details;
}
unsafe void SearchFace()
{
while (true)
{
Frame[] frames = null;
lock (locker)
{
if (framesQueue.Count > 0)
{
frames = framesQueue.Dequeue();
}
}
if (frames != null)
{
for (int i = 0; i < frames.Length; ++i)
{
DateTime dt = DateTime.FromBinary(frames[i].timeStamp);
NativeIconExtractor.AddInFrame(frames[i]);
}
IntPtr target = IntPtr.Zero;
int count = NativeIconExtractor.SearchFaces(ref target);
if (count > 0)
{
Target* pTarget = (Target*)target;
IList<Target> targets = new List<Target>();
int upLimit = count;
if (frames.Length > 1 && Properties.Settings.Default.DetectMotion
&& Properties.Settings.Default.removeDuplicatedFace)
{
upLimit = Math.Min(count, Properties.Settings.Default.MaxDupFaces);
}
for (int i = 0; i < upLimit; i++)
{
Target face = pTarget[i];
Frame frm = face.BaseFrame;
int idx = Array.FindIndex(frames, fm => fm.cameraID == frm.cameraID
&& fm.image == frm.image
&& fm.timeStamp == frm.timeStamp);
Debug.Assert(idx != -1);
targets.Add(face);
}
Target[] tgArr = new Target[targets.Count];
targets.CopyTo(tgArr, 0);
ImageDetail[] imgs = this.SaveImage(tgArr);
this.screen.ShowImages(imgs);
}
NativeIconExtractor.ReleaseMem();
Array.ForEach(frames, f => Cv.Release(ref f.image));
}
else
goSearch.WaitOne();
}
}