MFC实现位图序列播放并计算位图亮度

/**********************************************************
功能：选择图像序列文件夹后调用该线程进行播放序列
参数：对话框句柄
作者：airduce
时间：2018-9-26 10:02:46
修改时间：无
修改内容：新建
********************************************************************/
UINT ThreadOne(LPVOID lpParameter){
    //showPic(0,TRUE);
    CMFCDialogDlg *mydlg =(CMFCDialogDlg *)  lpParameter;

    mydlg->m_lbl_total = 1000;
    CString selectPath;
    mydlg->GetDlgItemTextW(IDC_MFCEDITBROWSE1,selectPath);
    string StrSelectPath(CW2A(selectPath.GetString()));
    StrSelectPath = StrSelectPath + "\";
    const char * myPath = StrSelectPath.data();
    CString EntName("bmp");

    vector<string> myStrings = listFiles(myPath);
    mydlg->m_slider.SetRange(0,myStrings.size()-1);
    //总帧数
    mydlg->m_lbl_total=myStrings.size();
    while (true){
        if(index==myStrings.size()){
            Sleep(100);
            continue;
        }
        if(!flag){
            Sleep(100);
            continue;
        }
        //当前帧显示值
        mydlg->m_lbl = index+1;
        //设置拉条位置
        mydlg->m_slider.SetPos(index);

        CString BmpName( myStrings.at(index).c_str());
        mydlg->m_lbl_name = BmpName;
        //mydlg->UpdateData(FALSE);
        CString _path("\");
        BmpName =  selectPath + _path +BmpName;
        EntName.MakeLower();  
        if(EntName.Compare(_T("bmp")) == 0)
        {
            //定义变量存储图片信息
            BITMAPINFO *pBmpInfo;       //记录图像细节
            BYTE *pBmpData;             //图像数据
            BITMAPFILEHEADER bmpHeader; //文件头
            BITMAPINFOHEADER bmpInfo;   //信息头
            CFile bmpFile;              //记录打开文件

            //以只读的方式打开文件 读取bmp图片各部分 bmp文件头 信息 数据
            if(!bmpFile.Open(BmpName, CFile::modeRead|CFile::typeBinary)) 
                return 0;
            if (bmpFile.Read(&bmpHeader,sizeof(BITMAPFILEHEADER)) != sizeof(BITMAPFILEHEADER))
                return 0;
            if (bmpFile.Read(&bmpInfo,sizeof(BITMAPINFOHEADER)) != sizeof(BITMAPINFOHEADER))
                return 0;
            pBmpInfo = (BITMAPINFO *)new char[sizeof(BITMAPINFOHEADER)];
            //为图像数据申请空间
            memcpy(pBmpInfo,&bmpInfo,sizeof(BITMAPINFOHEADER));
            DWORD dataBytes = bmpHeader.bfSize - bmpHeader.bfOffBits;
            pBmpData = (BYTE*)new char[dataBytes];
            bmpFile.Read(pBmpData,dataBytes);
            //获取位图亮度值
        /****************************************************************/
            if(bmpInfo.biBitCount==24){
                double  radL[256*256];
                double  maxradl=0; //最高亮度
                double  minradl=65535;//最小亮度
                double  meanradl;//最大亮度
                double  sum=0;
                for(int row = 0; row < 256; row++) {
                    for(int col = 0; col < 256; col++) {
                        BYTE R = pBmpData[256 * row * 3 + col * 3 + 0];
                        BYTE G = pBmpData[256 * row * 3 + col * 3 + 1];
                        BYTE B = pBmpData[256 * row * 3 + col * 3 + 2];
                        radL[row*256+col] = R*100+G+B/255.0; //辐射亮度
                        sum+=radL[row*256+col];
                        if(radL[row*256+col]>maxradl)
                            maxradl=radL[row*256+col];
                        if(radL[row*256+col]<minradl)
                            minradl=radL[row*256+col];
                        //frameimage[row*256+col]=radL[row*256+col];
                    }
                }
                meanradl=sum/65536;
                maxradl = ((double)((int)((maxradl+0.005)*100)))/100;
                meanradl = ((double)((int)((meanradl+0.005)*100)))/100;
                mydlg->max_lum = maxradl;
                mydlg->ave_lum = meanradl;
            }
        /****************************************************************/

            //bmpFile.Read(pBmpData,dataBytes);
            bmpFile.Close();

            //显示图像
            CWnd *pWnd=mydlg->GetDlgItem(IDC_STATIC_PIC); //获得pictrue控件窗口的句柄
            CRect rect;
            pWnd->GetClientRect(&rect); //获得pictrue控件所在的矩形区域
            CDC *pDC=pWnd->GetDC(); //获得pictrue控件的DC
            pDC->SetStretchBltMode(COLORONCOLOR);
            StretchDIBits(pDC->GetSafeHdc(),0,0,rect.Width(),rect.Height(),0,0,    bmpInfo.biWidth,bmpInfo.biHeight,pBmpData,pBmpInfo,DIB_RGB_COLORS,SRCCOPY);

            delete pBmpInfo;
            delete pBmpData;
            Sleep(15);
            index++;
        }
    }

    ExitThread(0);
    return 0;
}

运行效果：