[問題] OpenCV結合VS元件

[tyc5116 (累人啊....)]

開發平台(Platform): (Ex: VC++, GCC, Linux, ...) 
VC++
額外使用到的函數庫(Library Used): (Ex: OpenGL, ...) 
OpenCV
問題(Question)：
Data怪怪的
程式碼(Code)：(請善用置底文網頁, 記得排版) 
簡化一下架構,如下
class ImgProc{
public:
  ...
private:
  IplImage* Image;  //彩色圖
  IplImage* Image_Gray;  //灰階圖
  IplImage* Image_Handle;  //目前作完影像處理的圖
  cv::Mat MatImage;  //對應圖像的矩陣,以下皆是
  cv::Mat MatImageGray;
  cv::Mat MatHandleImage;
  ...
};

要將讀進來的圖示透過OpenCV函式,顯示在PictureBox上

(圖的大小為281*500,存檔時存成BMP 24bit)

首先先執行到兩行程式碼

this->Image = cvLoadImage(this->FileName.c_str(),CV_LOAD_IMAGE_COLOR);
this->Image_Gray = cvLoadImage(
                      this->FileName.c_str(),CV_LOAD_IMAGE_GRAYSCALE);
將讀的檔案分別存成彩色和灰階

google到的作法(只要注意標色的部份即可)



this->ImgObject->SetImgFileName(this->m_ofdOpenFileDia->FileName);
        string FileName;
        MarshalString(this->ImgObject->GetImgFileName(),FileName);
        IplImage *image1 = cvLoadImage(FileName.c_str());
        System::Drawing::Bitmap^ Img =
             gcnew System::Drawing::Bitmap(
                 this->ImgObject->GetImage()->width,  //281
                 this->ImgObject->GetImage()->height, //500
                 this->ImgObject->GetImage()->widthStep,  //844
                 System::Drawing::Imaging::PixelForm[Bat::Format24bppRgb,
                 (System::IntPtr)this->ImgObject->GetImage()->imageData
             );
this->m_PicDetect->Image = Img;

顯示灰階圖的時候,將標色的部份改成

System::Drawing::Imaging::PixelFormat::Format8bppIndexed,

再來我不懂的是,這樣顯示會有問題,還要再加上

Drawing::Imaging::ColorPalette ^palette = Img->Palette;
for( int i=0; i<256; i++)
  palette->Entries[i] = Color::FromArgb(i,i,i);
Img->Palette = palette;
this->m_PicDetect->Image = Img;

不懂為何一定要再加上這一段,結果才會正常

(灰階的width,height,widthStep分別為281,500,284)

以及開始作影像處理時(以Smooth為例)

cv::Mat MSmooth(this->ImgObject->GetGrayImageM());
CvMat src = this->ImgObject->GetGrayImageM();
CvMat dsc = MSmooth;

cvSmooth(&src,&dsc,CV_GAUSSIAN);
this->ImgObject->SetHandleImageM(MSmooth);
//cv::imshow("My Window",this->ImgObject->GetHandleImageM());
   //這一行結果是正常的

該函式內容為
void ImgProc::SetHandleImageM(cv::Mat Mat){
        this->MatHandleImage = Mat;
        if (this->Image_Handle != NULL || this->Image_Handle!=0){
                delete this->Image_Handle;
                this->Image_Handle = new IplImage(Mat);
        }
        else
                this->Image_Handle = new IplImage(Mat);
}
System::Drawing::Bitmap^ Img =
    gcnew System::Drawing::Bitmap(
          this->ImgObject->GetHandleImage()->width,  //281
          this->ImgObject->GetHandleImage()->height, //500
          this->ImgObject->GetHandleImage()->widthStep,  //281,變了
          System::Drawing::Imaging::PixelFormat::Format8bppIndexed,
          (System::IntPtr)this->ImgObject->GetHandleImage()->imageData
    );

看起來是widthStep值變了,造成錯誤,請問值為什麼會作變化?

以上兩個問題,再麻煩解答一下,謝謝

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※ 發信站: 批踢踢實業坊(ptt.cc)
※ 編輯: tyc5116         來自: 220.134.238.4        (11/26 17:18)
→ diabloevagto:在轉換上本來就是很不可思議了
→ diabloevagto:#1FeLuyuO 我有問過不知道跟你的一樣嗎
→ diabloevagto:最後我還是放棄了，你可以在繼續嘗試看看
→ tyc5116:其實我不是很懂你那個問題,也不知道和這個有什麼關聯,哈~