轉換系統::圖::位圖^到:: MAT

Question

如何在C++/CLI中將圖像從圖片框轉換爲:: MAT？

謝謝

Answer 1

您需要cast的Drawing.Image成Bitmap（假設該圖像確實是一個位圖）。
然後鎖定System.Drawing.Bitmap，並使用BitmapData的Scan0屬性訪問內部緩衝區。

System::Drawing::Bitmap^bitmapFrame = safe_cast< System::Drawing::Bitmap^>(pictureBox1->Image); 

BitmapData^ bmpData = bitmapFrame->LockBits(gcnew Rectangle(0, 0, bitmapFrame->Width, bitmapFrame->Height), System::Drawing::Imaging::ImageLockMode::ReadWrite, 
      bitmapFrame->Format); 
try 
{  
    void* data = bmpData.Scan0; 

    //use the data in the ::Mat constructor. 
} 
finally { bitmapFrame->UnlockBits(bmpData); }//Remember to unlock!!!