图像处理之 YUYV422 To OpenCV IplImage

#include <highgui/highgui.hpp>
using namespace cv;
class  ConvertYuvForCV
{public:ConvertYuvForCV(const int&iWidth,const int &Height,const string &strCvWindowName);~ConvertYuvForCV();bool CvWindowShow();void YUYV422ToIplImage(const unsigned char *pYUYV422,const int &iLen);private:void YUVToRGB(const int &iY, const int & iU, const int & iV, int &iR, int &iG, int &iB);void ConvertYUYV422ToRGB(const unsigned char* pYUYV422, const int &iLen,unsigned char *pRGB);void ConvertYUYV422ToBGR(const unsigned char* pYUYV422, const int &iLen,unsigned char *pRGB);private:int m_iWidth;int m_Height;IplImage *m_IplImage;unsigned char *m_pBGR;std::string  m_strCvWindowName;
};ConvertYuvForCV::ConvertYuvForCV(const int&iWidth,const int &iHeight ,const string &strCvWindowName)
{m_iWidth = iWidth;m_Height = iHeight;m_IplImage = cvCreateImage(cvSize(iWidth, iHeight),IPL_DEPTH_8U, 3);m_pBGR     = new unsigned char[iWidth*iHeight*3];m_strCvWindowName = strCvWindowName;if(!m_strCvWindowName.empty()){cvNamedWindow(m_strCvWindowName.c_str());}
}
ConvertYuvForCV::~ConvertYuvForCV()
{cvReleaseImage(&m_IplImage);delete[]m_pBGR;if(!m_strCvWindowName.empty()){cvDestroyWindow(m_strCvWindowName.c_str());}
}
void ConvertYuvForCV::YUYV422ToIplImage(const unsigned char *pYUYV422,const int &iLen)
{ConvertYUYV422ToBGR(pYUYV422,iLen,m_pBGR);cvSetData(m_IplImage,m_pBGR,m_iWidth*3);
}
void ConvertYuvForCV::YUVToRGB(const int &iY, const int & iU, const int & iV, int &iR, int &iG, int &iB)
{assert( &iR != NULL && &iG != NULL && &iB != NULL);iR = iY + 1.13983 * (iV - 128);iG = iY - 0.39465 * (iU - 128) - 0.58060 * (iV - 128);iB = iY + 2.03211 * (iU - 128);iR = iR > 255 ? 255 : iR;iR = iR < 0   ? 0   : iR;iG = iG > 255 ? 255 : iG;iG = iG < 0   ? 0   : iG;iB = iB > 255 ? 255 : iB;iB = iB < 0   ? 0   : iB;
}
void ConvertYuvForCV::ConvertYUYV422ToRGB(const unsigned char* pYUYV422, const int &iLen,unsigned char *pRGB)
{//YUYV422 640*480*2     TO  BGR 640*480*3int iR, iG, iB;int iY0, iY1, iU, iV;int i = 0;int j = 0;for(i = 0; i < iLen; i += 4){iY0 = pYUYV422[i + 0];iU  = pYUYV422[i + 1];iY1 = pYUYV422[i + 2];iV  = pYUYV422[i + 3];YUVToRGB(iY0, iU, iV, iR, iG, iB);pRGB[j++] = iR;pRGB[j++] = iG;pRGB[j++] = iB;YUVToRGB(iY1, iU, iV, iR, iG, iB);pRGB[j++] = iR;pRGB[j++] = iG;pRGB[j++] = iB;}pRGB[j] = '\0';
}
void ConvertYuvForCV::ConvertYUYV422ToBGR(const unsigned char* pYUYV422, const int &iLen,unsigned char *pBGR)
{//YUYV422 640*480*2     TO  BGR 640*480*3int iR, iG, iB;int iY0, iY1, iU, iV;int i = 0;int j = 0;for(i = 0; i < iLen; i += 4){//其排列方式是y0 u y1 v//直接提取出来y、u、v三个分量，然后使用公式转成RGB即可//因为两个y共享一对uv。故y0 u y1 v能提取出两组(y, u, v)iY0 = pYUYV422[i + 0];iU  = pYUYV422[i + 1];iY1 = pYUYV422[i + 2];iV  = pYUYV422[i + 3];YUVToRGB(iY0, iU, iV, iR, iG, iB);pBGR[j++] = iB;pBGR[j++] = iG;pBGR[j++] = iR;YUVToRGB(iY1, iU, iV, iR, iG, iB);pBGR[j++] = iB;pBGR[j++] = iG;pBGR[j++] = iR;}pBGR[j] = '\0';
}
bool  ConvertYuvForCV::CvWindowShow()
{if(!m_strCvWindowName.empty()){cvShowImage(m_strCvWindowName.c_str(), m_IplImage);cvWaitKey(33);}else{std::cout<<"Have no Available CvWindow "<<std::endl;return false;}return true;
}
int main()
{const char* pFilename = "/root/Test_yuyv422.yuv";FILE* pFin = fopen(pFilename, "rb");if( pFin == NULL ){printf("can't open the file\n");return -1;}int iWidth = 352;int iHeight = 288;int iFrameSize = iWidth * iHeight * 2;unsigned char* pYUYV422Buff = new unsigned char[iFrameSize];string strCvWindowName("FUCK");ConvertYuvForCV oConvertYuvForCV(iWidth,iHeight,strCvWindowName);while( 1 ){int iRet = fread(pYUYV422Buff, 1, iFrameSize, pFin);if( iRet != iFrameSize ){break;}oConvertYuvForCV.YUYV422ToIplImage(pYUYV422Buff,iFrameSize);oConvertYuvForCV.CvWindowShow();}delete[]pYUYV422Buff;return 0;
}

测试YUYV视频文件http://download.csdn.net/detail/luotuo44/7377249

参考博客：http://blog.csdn.net/dreamd1987/article/details/7259479

                   http://blog.csdn.net/luotuo44/article/details/26402273