1
運行我的節目，我總是得到這個錯誤...AccessViolationException在EMGU是未處理的CV
我不知道什麼是錯了我的計劃，僅供參考，其實我的計劃包括許多圖像處理算法的諸如
- 中提琴 - 瓊斯haarcascade用於手檢測
- CAMSHIFT +卡爾曼手濾波器跟蹤
- 個凸包和凸缺陷用於計數手指
- 和其他預處理....
我不知道這些過程是否觸發錯誤或不...
但是當我除去凸形輪廓/凸面缺陷，錯誤消失... 任何解決方案？
編輯：（加）
這是代碼片段
private void ExtractContourAndHull()
{
using (MemStorage storage = new MemStorage())
{
Contour<Point> contours = backproject.FindContours(Emgu.CV.CvEnum.CHAIN_APPROX_METHOD.CV_CHAIN_APPROX_SIMPLE, Emgu.CV.CvEnum.RETR_TYPE.CV_RETR_LIST, storage);
Contour<Point> biggestContour = null;
Double Result1 = 0;
Double Result2 = 0;
while (contours != null)
{
Result1 = contours.Area;
if (Result1 > Result2)
{
Result2 = Result1;
biggestContour = contours;
}
contours = contours.HNext;
}
if (biggestContour != null)
{
//image.Draw(biggestContour, new Bgr(Color.DarkViolet), 2);
Contour<Point> currentContour = biggestContour.ApproxPoly(biggestContour.Perimeter * 0.005, storage);
image.Draw(currentContour, new Bgr(Color.LimeGreen), 2);
biggestContour = currentContour;
hull = biggestContour.GetConvexHull(ORIENTATION.CV_CLOCKWISE);
box = biggestContour.GetMinAreaRect();
PointF[] points = box.GetVertices();
//handRect = box.MinAreaRect();
//image.Draw(handRect, new Bgr(200, 0, 0), 1);
Point[] ps = new Point[points.Length];
for (int i = 0; i < points.Length; i++)
ps[i] = new Point((int)points[i].X, (int)points[i].Y);
image.DrawPolyline(hull.ToArray(), true, new Bgr(200, 125, 75), 2);
image.Draw(new CircleF(new PointF(box.center.X, box.center.Y), 3), new Bgr(200, 125, 75), 2);
//ellip.MCvBox2D= CvInvoke.cvFitEllipse2(biggestContour.Ptr);
//image.Draw(new Ellipse(ellip.MCvBox2D), new Bgr(Color.LavenderBlush), 3);
//PointF center;
//float radius;
//CvInvoke.cvMinEnclosingCircle(biggestContour.Ptr, out center, out radius);
//image.Draw(new CircleF(center, radius), new Bgr(Color.Gold), 2);
//image.Draw(new CircleF(new PointF(ellip.MCvBox2D.center.X, ellip.MCvBox2D.center.Y), 3), new Bgr(100, 25, 55), 2);
//image.Draw(ellip, new Bgr(Color.DeepPink), 2);
//CvInvoke.cvEllipse(image, new Point((int)ellip.MCvBox2D.center.X, (int)ellip.MCvBox2D.center.Y), new System.Drawing.Size((int)ellip.MCvBox2D.size.Width, (int)ellip.MCvBox2D.size.Height), ellip.MCvBox2D.angle, 0, 360, new MCvScalar(120, 233, 88), 1, Emgu.CV.CvEnum.LINE_TYPE.EIGHT_CONNECTED, 0);
//image.Draw(new Ellipse(new PointF(box.center.X, box.center.Y), new SizeF(box.size.Height, box.size.Width), box.angle), new Bgr(0, 0, 0), 2);
filteredHull = new Seq<Point>(storage);
for (int i = 0; i < hull.Total; i++)
{
if (Math.Sqrt(Math.Pow(hull[i].X - hull[i + 1].X, 2) + Math.Pow(hull[i].Y - hull[i + 1].Y, 2)) > box.size.Width/10)
{
filteredHull.Push(hull[i]);
}
}
defects = biggestContour.GetConvexityDefacts(storage, Emgu.CV.CvEnum.ORIENTATION.CV_CLOCKWISE);
defectArray = defects.ToArray();
}
}
}
private void DrawAndComputeFingersNum()
{
using (MemStorage storage = new MemStorage())
{
int fingerNum = 0;
#region hull drawing
//for (int i = 0; i < filteredHull.Total; i++)
//{
// PointF hullPoint = new PointF((float)filteredHull[i].X,
// (float)filteredHull[i].Y);
// CircleF hullCircle = new CircleF(hullPoint, 4);
// image.Draw(hullCircle, new Bgr(Color.Aquamarine), 2);
//}
#endregion
#region defects drawing
***defects = new Seq<MCvConvexityDefect>(storage);***
for (int i = 0; i < defects.Total; i++)
{
PointF startPoint = new PointF((float)defectArray[i].StartPoint.X,
(float)defectArray[i].StartPoint.Y);
PointF depthPoint = new PointF((float)defectArray[i].DepthPoint.X,
(float)defectArray[i].DepthPoint.Y);
PointF endPoint = new PointF((float)defectArray[i].EndPoint.X,
(float)defectArray[i].EndPoint.Y);
LineSegment2D startDepthLine = new LineSegment2D(defectArray[i].StartPoint, defectArray[i].DepthPoint);
LineSegment2D depthEndLine = new LineSegment2D(defectArray[i].DepthPoint, defectArray[i].EndPoint);
CircleF startCircle = new CircleF(startPoint, 5f);
CircleF depthCircle = new CircleF(depthPoint, 5f);
CircleF endCircle = new CircleF(endPoint, 5f);
MCvFont angga = new MCvFont(Emgu.CV.CvEnum.FONT.CV_FONT_HERSHEY_SCRIPT_COMPLEX, 0.5, 0.5);
// image.Draw(defectArray[i].StartPoint.X.ToString() + " , " + defectArray[i].StartPoint.Y.ToString(), ref angga, new Point(defectArray[i].StartPoint.X, defectArray[i].StartPoint.Y), new Bgr(Color.Red));
image.Draw(defectArray[i].StartPoint.X.ToString() + " , " + defectArray[i].StartPoint.Y.ToString() + " , " + i.ToString(), ref angga, new Point(defectArray[i].StartPoint.X, defectArray[i].StartPoint.Y), new Bgr(Color.Red));
//Custom heuristic based on some experiment, double check it before use
if ((startCircle.Center.Y < box.center.Y || depthCircle.Center.Y < box.center.Y) && (startCircle.Center.Y < depthCircle.Center.Y) && (Math.Sqrt(Math.Pow(startCircle.Center.X - depthCircle.Center.X, 2) + Math.Pow(startCircle.Center.Y - depthCircle.Center.Y, 2)) > box.size.Height/6.5))
{
fingerNum++;
//image.Draw(startDepthLine, new Bgr(Color.Blue), 2);
//image.Draw(depthEndLine, new Bgr(Color.Magenta), 2);
}
image.Draw(startCircle, new Bgr(Color.Red), 2);
image.Draw(depthCircle, new Bgr(Color.Yellow), 5);
//image.Draw(endCircle, new Bgr(Color.DarkBlue), 4);
}
#endregion
MCvFont font = new MCvFont(Emgu.CV.CvEnum.FONT.CV_FONT_HERSHEY_DUPLEX, 5d, 5d);
image.Draw(fingerNum.ToString(), ref font, new Point(50, 150), new Bgr(Color.White));
hand.fingerChangedCompute = fingerNum;
}
}
public MemStorage storage { get; set; }
淵源考 看看DrawandComputeFingersNUm（），你會看到一行
defects = new Seq<MCvConvexityDefect>(storage);
問題會當我取消註釋上面的行時會出現。
任何人都知道 如何解決這個問題呢？ 任何幫助將不勝感激。 謝謝
你不會得到結果詢問僅基於其使用的算法來調試程序。你的問題將得到更具體的獲得任何有用的幫助。 – antlersoft 2012-07-05 16:18:43
好@antlersoft我會修改問題.. – sheldon90 2012-07-07 11:47:55