参考:How to detect and count a spiral's turns
即使在基于像素的计算中,我也无法计算。
如果我附加了图像如何开始计算转弯。
我尝试过FindContours();但是并没有完全分离它不能的转弯。同样,matchshape()我有相似因子,但对于整个线圈。
所以我尝试了如下转弯计数:
public static int GetSpringTurnCount()
{
if (null == m_imageROIed)
return -1;
int imageWidth = m_imageROIed.Width;
int imageHeight = m_imageROIed.Height;
if ((imageWidth <= 0) || (imageHeight <= 0))
return 0;
int turnCount = 0;
Image<Gray, float> imgGrayF = new Image<Gray, float>(imageWidth, imageHeight);
CvInvoke.cvConvert(m_imageROIed, imgGrayF);
imgGrayF = imgGrayF.Laplace(1); // For saving integer overflow.
Image<Gray, byte> imgGray = new Image<Gray, byte>(imageWidth, imageHeight);
Image<Gray, byte> cannyEdges = new Image<Gray, byte>(imageWidth, imageHeight);
CvInvoke.cvConvert(imgGrayF, imgGray);
cannyEdges = imgGray.Copy();
//cannyEdges = cannyEdges.ThresholdBinary(new Gray(1), new Gray(255));// = cannyEdges > 0 ? 1 : 0;
cannyEdges = cannyEdges.Max(0);
cannyEdges /= 255;
Double[] sumRow = new Double[cannyEdges.Cols];
//int sumRowIndex = 0;
int Rows = cannyEdges.Rows;
int Cols = cannyEdges.Cols;
for (int X = 0; X < cannyEdges.Cols; X++)
{
Double sumB = 0;
for (int Y = 0; Y < cannyEdges.Rows; Y ++)
{
//LineSegment2D lines1 = new LineSegment2D(new System.Drawing.Point(X, 0), new System.Drawing.Point(X, Y));
Double pixels = cannyEdges[Y, X].Intensity;
sumB += pixels;
}
sumRow[X] = sumB;
}
Double avg = sumRow.Average();
List<int> turnCountList = new List<int>();
int cnt = 0;
foreach(int i in sumRow)
{
sumRow[cnt] /= avg;
if(sumRow[cnt]>3.0)
turnCountList.Add((int)sumRow[cnt]);
cnt++;
}
turnCount = turnCountList.Count();
cntSmooth = cntSmooth * 0.9f + (turnCount) * 0.1f;
return (int)cntSmooth;
}
我接下来尝试冲浪。
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编辑:添加样本。如果你喜欢它的话。
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编辑:尝试了另一个算法:
稍后会有更好的算法和结果。
答案 0 :(得分:0)
假设更大的白色簇是弹簧
- 编辑 -
所有这一切都假设您的图片中没有高噪声。