Santech Camera Callback範例程式加入EmguCV像素控制－天天向上

新專案名稱: SantechCallback

開啟StCamUSBPack_EN_160325\3_SDK\StandardSDK(v3.10)\include

準備加入StCamD.cs

加入->現有項目->StCamD.cs

開啟3_SDK\StandardSDK(v3.10)\Sample\VCSHARPNET2005\SampleCallback

將CFPS.cs加入專案

加入Emgu.CV Emgu.CV.UI Emgu.Util

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加入命名空間

using SensorTechnology;using SampleCallback;using System.Runtime.InteropServices;using Emgu.CV;using Emgu.CV.CvEnum;using Emgu.CV.Structure;

初始化Callback function物件 m_GDICallbackDelegate

public Form1(){    InitializeComponent();    m_GDICallbackDelegate = new StCam.fStCamPreviewGDICallbackFunc(OnGDICallbackFunc);}

preview 按鈕

//Start            if (!StCam.CreatePreviewWindow(                m_hCamera, "Preview",                StCam.WS_CHILD | StCam.WS_VISIBLE,                0, 0, 0, 0, tabPage3.Handle, System.IntPtr.Zero, true))                ShowErrorMsg(StCam.GetLastError(m_hCamera));             UInt32 dwStyle = StCam.WS_VISIBLE | StCam.WS_HSCROLL | StCam.WS_VSCROLL;            dwStyle |= StCam.WS_CHILDWINDOW;            //StCam.SetWhiteBalanceMode(m_hCamera, 0);            whiteBalanceToolStripMenuItem.Checked = true;            StCam.SetWhiteBalanceMode(m_hCamera, 1);            if (!StCam.StartTransfer(m_hCamera))                ShowErrorMsg(StCam.GetLastError(m_hCamera));

白平衡StCam我試過的心得

1. 自訂義效果最好, Auto tune效果很爛,

例如全白的待測物去校正, 但學習出來的效果往往不佳,

當你再拿其他顏色待測物就會發現白平衡參數不適用@@

2. 自訂義參數在調整階段, 建議放入四種顏色R,G, B還有全白的待測物,

這樣才不會調適過度目前顏色, 漏掉某其他顏色

Snap

private void Snap()      {          bool bReval = true;          uint nLastErrorNo = 0;           do          {              //Get Image Size              uint dwSize;              uint dwWidth;              uint dwHeight;              uint dwLinePitch;              bReval = StCam.GetPreviewDataSize(m_hCamera, out dwSize, out dwWidth, out dwHeight, out dwLinePitch);              if (!bReval)              {                  nLastErrorNo = StCam.GetLastError(m_hCamera);                  break;              }               //Get Preview Pixel Format              uint dwPreviewPixelFormat;              bReval = StCam.GetPreviewPixelFormat(m_hCamera, out dwPreviewPixelFormat);              if (!bReval)              {                  nLastErrorNo = StCam.GetLastError(m_hCamera);                  break;              }               //Allocate Memory              System.Drawing.Imaging.PixelFormat pixelFormat = System.Drawing.Imaging.PixelFormat.Format8bppIndexed;              switch (dwPreviewPixelFormat)              {                  case (StCam.STCAM_PIXEL_FORMAT_24_BGR):                      pixelFormat = System.Drawing.Imaging.PixelFormat.Format24bppRgb;                      break;                  case (StCam.STCAM_PIXEL_FORMAT_32_BGR):                      pixelFormat = System.Drawing.Imaging.PixelFormat.Format32bppRgb;                      break;              }               byte[] pbyteImageBuffer = new byte[dwSize];               //Take Snap Shot              uint dwNumberOfByteTrans;              uint[] pdwFrameNo = new uint[1];              uint dwMilliseconds = 100;              System.Runtime.InteropServices.GCHandle gch = System.Runtime.InteropServices.GCHandle.Alloc(pbyteImageBuffer, System.Runtime.InteropServices.GCHandleType.Pinned);              System.IntPtr ptr = gch.AddrOfPinnedObject();               bReval = StCam.TakePreviewSnapShot(m_hCamera, ptr, dwSize, out dwNumberOfByteTrans, pdwFrameNo, dwMilliseconds);               gch.Free();              if (!bReval)              {                  nLastErrorNo = StCam.GetLastError(m_hCamera);                  break;              }               UpdateSnapShot((int)dwWidth, (int)dwHeight, pbyteImageBuffer, dwSize, pixelFormat);              //m_FormSnapShot.Show();          } while (false);           //Show Error Message          if (!bReval)          {              ShowErrorMsg(nLastErrorNo);          }      }

UpdateSanpeShot

public bool UpdateSnapShot(int nWidth, int nHeight, byte[] pbyteImg, uint nBufferSize, System.Drawing.Imaging.PixelFormat pixelFormat)       {           Bitmap bitmap = new Bitmap(nWidth, nHeight, pixelFormat);             switch (pixelFormat)           {               case (System.Drawing.Imaging.PixelFormat.Format8bppIndexed):                   //Palette                   {                        System.Drawing.Imaging.ColorPalette colorPalette = bitmap.Palette;                       for (int pixelValue = 0; pixelValue <= 255; pixelValue++)                       {                           colorPalette.Entries[pixelValue] = Color.FromArgb(pixelValue, pixelValue, pixelValue);                       }                       bitmap.Palette = colorPalette;                   }                   break;           }            //Copy           System.Drawing.Imaging.BitmapData bitmapData = bitmap.LockBits(new Rectangle(0, 0, nWidth, nHeight), System.Drawing.Imaging.ImageLockMode.WriteOnly, pixelFormat);           System.Runtime.InteropServices.Marshal.Copy(pbyteImg, 0, bitmapData.Scan0, (int)nBufferSize);           bitmap.UnlockBits(bitmapData);            if (m_Bitmap != null)           {               //pictureBox1.Image = null;               m_Bitmap.Dispose();               inputImage.Dispose();           }            m_Bitmap = bitmap;            // 複製至inputImage (EmguCV格式)           inputImage = new Image<Bgr, byte>(m_Bitmap);           colorImageBox.Image = inputImage;              return (true);       }