前言

C#联合halcon 鼠标移动获取图像灰度值。

代码

 HObject hImage = null;
 HTuple width = new HTuple();
 HTuple height = new HTuple();
 int pointX = -1;
 int pointY = -1;

 private void HSImageWindow_HMouseMove(object sender, HMouseEventArgs e)
 {
     if (hImage != null )
     {
         HOperatorSet.CountChannels(hImage, out HTuple hChannels);
         HTuple grayValue = new HTuple();
         pointX = Convert.ToInt32(e.X);
         pointY = Convert.ToInt32(e.Y);
         if (pointX >= 0 && pointY >= 0
             && pointX < width && pointY< height)
         {
             HOperatorSet.GetGrayval(hImage, pointY, pointX, out grayValue);
             if (hChannels != null && hChannels == 1)
             {
                 Debug.WriteLine($"[X = {pointX},Y = {pointY},Gray = {grayValue.D.ToString("F0")}]");
             }
             else if (hChannels != null && hChannels == 3)
             {
                 Debug.WriteLine($"[X = {pointX},Y = {pointY},Gray = {grayValue.D.ToString("F0")}]");
             }
         }
     }
     else
     {
         Debug.WriteLine($"[X = {(int)e.X},Y = {(int)e.Y}]");
     }
 }