public void GenerateWL()
{
if (histo_data == null || histo_data.HistogramData == null)
{
return;
}
WL_BMP = new Bitmap(histo_width, histo_height);
Graphics gp = Graphics.FromImage(WL_BMP);
Point p = HisLUT.GetCminCmax(histo_data.windowCenter, histo_data.windowWidth);
int curMin = GetValuePosition(p.X);
int curMax = GetValuePosition(p.Y);
int maxX = WL_BMP.Width - 1;
if (curMin < 0)
{
curMin = 0;
}
else if (curMin > maxX)
{
curMin = maxX;
}
if (curMax < 0)
{
curMax = 0;
}
else if (curMax > maxX)
{
curMax = maxX;
}
if (curMax < curMin)
{
curMax = curMin;
}
Pen WL_pen = new Pen(WL_Color);
Point p_left_down = new Point(curMin, WL_BMP.Height);
Point p_left_up = new Point(curMin, 0);
Point p_right_down = new Point(curMax, WL_BMP.Height);
Point p_right_up = new Point(curMax, 0);
Point p_mid_up = new Point((curMin + curMax) / 2, 0);
Point p_mid_down = new Point((curMin + curMax) / 2, WL_BMP.Height);
gp.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
gp.DrawLine(WL_pen, p_left_down, p_left_up);
gp.DrawLine(WL_pen, p_left_down, p_right_up);
gp.DrawLine(WL_pen, p_right_down, p_right_up);
gp.DrawLine(WL_pen, p_mid_up, p_mid_down);
gp.Dispose();
}
public unsafe void GenerateImage()
{
if (imgLevel == 0 && imgWindow == 0)
{
Histogram_Data his = new Histogram_Data();
his.ComputeHistogram(ImageData);
imgLevel = his.windowCenter;
imgWindow = his.windowWidth;
}
Color[] LUT = null;
HisLUT.RefreshLUT(ref LUT, null, false, imgLevel, imgWindow, 65536);
BMP = SliceImageToBitmap24(ImageData, LUT);
}
/// <summary>
/// 获得初始的Lut
/// </summary>
private Color[] GetImageDataLut(ushort[,] data)
{
//int maxValueLimit = 65536;
AverageHistogram his = new AverageHistogram(data);
int HFMax = level + window / 2;
int HFMin = level - window / 2;
if (HFMax < 0 || HFMin < 0)
{
//level = his.winWidth / 2 + his.MinValue;
//window = his.LenValue;
level = his.WinCenter;
window = his.WinWidth;
}
else
{
if (HFMax > his.MaxValue || HFMin > his.MaxValue)
{
//level = his.LenValue / 2 + his.MinValue;
//window = his.LenValue;
level = his.WinCenter;
window = his.WinWidth;
}
}
int maxvalue = his.LenValue < 256 ? 256 : his.LenValue;
maxValue = maxvalue;
minValue = his.MinValue;
Color[] colorLUT = null;
ImageCapturing.ColorMode[] colorModels = HistogramControl.ReadLUTColorModel();
for (int i = 0; i < colorModels.Length; i++)
{
if (colorModels[i].Name == colorModeName)
{
colorLUT = colorModels[i].colorLUT;
break;
}
}
return(HisLUT.RefreshLUT(colorLUT, converse, level, window, maxvalue, minValue));
}
public void MouseDown(PictureBox picturebox, MouseEventArgs e)
{
if (histo_data == null || histo_data.HistogramData == null)
{
return;
}
Point p = new Point(e.X - startPoint_ref.X, e.Y - startPoint_ref.Y);
if (p.Y > histo_height)
{
return;
}
Point p_minMax = HisLUT.GetCminCmax(histo_data.windowCenter, histo_data.windowWidth);
int curMin = GetValuePosition(p_minMax.X);
int curMax = GetValuePosition(p_minMax.Y);
if (Math.Abs(p.X - curMin) < 5 && p.Y < histo_height)
{
breakPoint.Y = 1;
}
else if (((p.X - curMin) > 5) && ((curMax - p.X) > 5) && p.Y < histo_height)
{
breakPoint.Y = 2;
}
else if (Math.Abs(p.X - curMax) < 5 && p.Y < histo_height)
{
breakPoint.Y = 3;
}
else
{
breakPoint.Y = 0;
}
breakPoint.X = p.X;
}
/// 静态函数
///
private static List <PointF> ComputeDefaultROIPoints(ushort[,] imgData)
{
ushort[,] imagedataTemp = (ushort[, ])imgData.Clone();
int[] rdata = LunImage.FindMaxAndMin(imagedataTemp);
int maxValue = rdata[0];
int minValue = rdata[1];
int lenValue = maxValue - minValue + 1;
int[] histogramData = new int[lenValue];
foreach (int da in imgData)
{
histogramData[da - minValue]++;
}
double sum = 0;
double csum = 0.0;
int n = 0;
int thresholdValue = 0;
for (int k = 0; k < lenValue; k++)
{
sum += (double)k * (double)histogramData[k]; /* x*f(x) 质量矩*/
n += histogramData[k]; /* f(x) 质量 */
}
if (n <= 0)
{
// if n has no value, there is problems...
return(new List <PointF>());
}
// do the otsu global thresholding method
double fmax = -1.0;
int n1 = 0;
int n2 = 0;
double m1, m2 = 0;
for (int k = 0; k < lenValue; k++)
{
n1 += histogramData[k];
if (n1 <= 0)
{
continue;
}
n2 = n - n1;
if (n2 == 0)
{
break;
}
csum += (double)k * histogramData[k];
m1 = csum / n1;
m2 = (sum - csum) / n2;
double sb = (double)n1 * (double)n2 * (m1 - m2) * (m1 - m2);
/* bbg: note: can be optimized. */
if (sb > fmax)
{
fmax = sb;
thresholdValue = k;
}
}
for (int i = 0; i < imagedataTemp.GetLength(0); i++)
{
for (int j = 0; j < imagedataTemp.GetLength(1); j++)
{
if (imagedataTemp[i, j] < thresholdValue)
{
imagedataTemp[i, j] = 0;
}
else
{
imagedataTemp[i, j] = (ushort)thresholdValue;
}
}
}
int level = thresholdValue / 2;
int window = thresholdValue / 5;
Histogram his = new Histogram(imagedataTemp);
int HFMax = level + window / 2;
int HFMin = level - window / 2;
if (HFMax < 0 || HFMin < 0)
{
level = his.WinCenter;
window = his.WinWidth;
}
else
{
if (HFMax > his.MaxValue || HFMin > his.MaxValue)
{
level = his.WinCenter;
window = his.WinWidth;
}
}
int maxvalue = his.LenValue < 256 ? 256 : his.LenValue;
maxValue = maxvalue;
minValue = his.MinValue;
Color[] LUT = HisLUT.RefreshLUT(null, false, level, window, maxvalue, minValue);
Bitmap BMP = TypeConvert.SliceImageToBitmap24(imagedataTemp, LUT, minValue);
float x1 = 0;
float y1 = 0;
float x2 = BMP.Width - 1;
float y2 = BMP.Height - 1;
BoundaryTracker bt = new BoundaryTracker();
bt.GetSerializedBoundary(BMP, LUT[0], new Rectangle((int)x1, (int)y1, (int)(x2 - x1 + 1), (int)(y2 - y1 + 1)), false);
List <PointF> temp = new List <PointF>();
if (bt.MaxPointIdx != -1)
{
PointF[] tmp = bt.CL[bt.MaxPointIdx];
if (tmp.Length > 3)
{
for (int i = 0; i < tmp.Length; i++)
{
temp.Add(tmp[i]);
}
}
}
else
{
temp.Add(new PointF(0, 0));
temp.Add(new PointF(0, BMP.Height - 1));
temp.Add(new PointF(BMP.Width - 1, BMP.Height - 1));
temp.Add(new PointF(BMP.Width - 1, 0));
}
return(temp);
}
public void MouseMove(PictureBox picturebox, MouseEventArgs e)
{
if (histo_data == null || histo_data.HistogramData == null)
{
return;
}
Point p = new Point(e.X - startPoint_ref.X, e.Y - startPoint_ref.Y);
if (p.Y > histo_height)
{
return;
}
Point p_minMax = HisLUT.GetCminCmax(histo_data.windowCenter, histo_data.windowWidth);
int curMin = GetValuePosition(p_minMax.X);
int curMax = GetValuePosition(p_minMax.Y);
int error = 3;
if (e.Button != MouseButtons.Left)
{
if (Math.Abs(p.X - curMin) < error && p.Y < histo_height)
{
picturebox.Cursor = Cursors.SizeWE;
}
else if (Math.Abs(p.X - curMax) < error && p.Y < histo_height)
{
picturebox.Cursor = Cursors.SizeWE;//TCursor.curRight;
}
else if (((p.X - curMin) >= error) && ((curMax - p.X) >= error) && p.Y < histo_height)
{
picturebox.Cursor = Cursors.Hand;
}
else
{
picturebox.Cursor = Cursors.Default;
}
}
else if (breakPoint.Y != 0 && Math.Abs(p.X - breakPoint.X) > 5 && p.Y < histo_height)
{
int oldMinInHist = curMin;
int oldMaxInHist = curMax;
if (breakPoint.Y == 1)
{
curMin = p.X;
breakPoint.X = p.X;
}
else if (breakPoint.Y == 3)
{
curMax = e.X;
breakPoint.X = p.X;
}
else if (breakPoint.Y == 2)
{
curMax += (p.X - breakPoint.X); //加上偏移量
curMin += (p.X - breakPoint.X);
if (curMin < 0 && p.X < (0 + curMax) / 2)
{
curMax -= (0 - curMin);
}
if (curMax > histo_width && p.X > (curMin + histo_width - 0 - 1) / 2)
{
curMin += (curMax - histo_width);
}
breakPoint.X = p.X;
}
if (Math.Abs(oldMinInHist - curMin) < 1 && Math.Abs(oldMaxInHist - curMax) < 1)
{
return;
}
int minV = GetPositionValue(curMin);
int maxV = GetPositionValue(curMax);
if (minV > maxV)
{
int temp = maxV;
maxV = minV;
minV = temp;
}
histo_data.SetCenterWindow((maxV - minV) / 2 + minV, maxV - minV);
picturebox.Image = new Bitmap(histo_width, histo_height);
Graphics g = Graphics.FromImage(picturebox.Image);
GenerateWL();
g.DrawImage(backBMP, new Point(0, 0));
g.DrawImage(WL_BMP, new Point(0, 0));
picturebox.Refresh();
//hist1.RefreshLUT();
//if (LUTChanged != null)
//{
// LUTChanged(0, new Point(hist1.windowCenter, hist1.windowWidth), hist1.LUT);
//}
}
}
