OpenCv内存清除以供重用

使用以下函数后，openCV中的内存管理出现问题：

cvCreateMemStorage（0）；

我想做的是：我在许多图像上循环，并使用cvExtractSurf（）提取关键点和描述符。我对每一帧都这样做，每两帧我都在做某种处理。我只需要在内存中保留两帧，所以我使用创建了内存存储

cvCreateMemStorage（0）；

我希望在每一帧上完成处理后，彻底清理内存存储，以便重用它来存储下一帧的关键点和描述符。我需要这样做，因为我正在处理大量的帧，因此创建大量的内存存储并不是最好的选择。

我试着使用cvClearMemStorage（）、cvClearSeq（）和cvRelease（），但都不起作用，结果总是出错。这是包含重要部分的代码（我已经删除了所有与questin没有直接关系的行，所以当然这段代码不会编译）：

CvMemStorage* storageSrc = cvCreateMemStorage(0);
CvMemStorage* storageDest = cvCreateMemStorage(0);

// loop on all .bmp files in the selected directory
cout << "STARTING READING THE FRAME" << endl;
while(myHandle!=INVALID_HANDLE_VALUE && myFile.cFileName!= buffer){
    buffer=myFile.cFileName;
    fileLocation = dirName + buffer;
    frameNames.push_back(fileLocation);
    frame = cvLoadImage(fileLocation.c_str(), CV_LOAD_IMAGE_COLOR);
    frameResized = cvCreateImage(cvSize(processingSizeX, processingSizeY), 8, 3);
    cvResize(frame, frameResized, CV_INTER_AREA);
    resizedGray = cvCreateImage(cvSize(processingSizeX, processingSizeY), 8, 1);
    cvCvtColor( frameResized, resizedGray, CV_RGB2GRAY );
    if(!frame){
        fprintf(stderr, "Error when loading the images.");
        exit(-1);
    }

    if(nbFrameRead == 0){
        cout << endl;
        cout << "ZONE 1" << endl;
        cout << endl;
        cvSetImageROI( correspond, cvRect( 0, 0, processingSizeX, processingSizeY) );
        cvCopy( frameResized, correspond );
        cvResetImageROI( correspond );
        cvExtractSURF( resizedGray, 0, &srcFrameKeypoints, &srcFrameDescriptors, storageSrc, params );
        nbFrameRead++;

    }
    else if(nbFrameRead == 1){

        cout << endl;
        cout << "ZONE 2" << endl;
        cout << endl;

        cvExtractSURF( resizedGray, 0, &destFrameKeypoints, &destFrameDescriptors, storageDest, params );
        //printf("Nb Key Points in frame %d: %dn", nbFrameRead, srcFrameDescriptors->total);

        // clear memory and switch current frame to last frame
        cvClearSeq(srcFrameKeypoints);
        cvClearSeq(srcFrameDescriptors);
        cvClearSeq(descriptorsOrderedSrc);
        cvClearMemStorage(storageSrc);
        srcFrameKeypoints = cvCloneSeq(destFrameKeypoints, storageSrc);
        descriptorsOrderedSrc = cvCloneSeq(descriptorsOrderedDest, storageSrc);
        cvClearSeq(destFrameKeypoints);
        cvClearSeq(destFrameDescriptors);
        cvClearSeq(descriptorsOrderedDest);
        cvClearMemStorage(storageDest);

        cvSetImageROI( correspond, cvRect( 0, 0, processingSizeX, processingSizeY) );
        cvCopy( frameResized, correspond );
        cvResetImageROI( correspond );
        nbFrameRead++;

    }
    else if(nbFrameRead < bufferSize + 2){
        cout << endl;
        cout << "ZONE 3" << endl;
        cout << endl;

        cvExtractSURF( resizedGray, 0, &destFrameKeypoints, &destFrameDescriptors, storageDest, params );
        //printf("Nb Key Points in frame %d: %dn", nbFrameRead, srcFrameDescriptors->total);
        //clear memory and switch current frame to last frame
        cvClearSeq(srcFrameKeypoints);
        cvClearSeq(srcFrameDescriptors);
        cvClearSeq(descriptorsOrderedSrc);
        cvClearMemStorage(storageSrc);
        srcFrameKeypoints = cvCloneSeq(destFrameKeypoints, storageSrc);
        descriptorsOrderedSrc = cvCloneSeq(descriptorsOrderedDest, storageSrc);
        cvClearSeq(destFrameKeypoints);
        cvClearSeq(destFrameDescriptors);
        cvClearSeq(descriptorsOrderedDest);
        cvClearMemStorage(storageDest);
        nbFrameRead++;
    }
    else{
        cout << endl;
        cout << "ZONE 4" << endl;
        cout << endl;

        cvExtractSURF( resizedGray, 0, &destFrameKeypoints, &destFrameDescriptors, storageDest, params );

        // clear memory and switch current frame to last frame
        cvClearSeq(srcFrameKeypoints);
        cvClearSeq(srcFrameDescriptors);
        cvClearSeq(descriptorsOrderedSrc);
        cvClearMemStorage(storageSrc);
        srcFrameKeypoints = cvCloneSeq(destFrameKeypoints, storageSrc);
        descriptorsOrderedSrc = cvCloneSeq(descriptorsOrderedDest, storageSrc);
        cvClearSeq(destFrameKeypoints);
        cvClearSeq(destFrameDescriptors);
        cvClearSeq(descriptorsOrderedDest);
        cvClearMemStorage(storageDest);

        nbFrameRead++;
        nbFrameSmoothed++;

    }
    FindNextFile(myHandle,&myFile);
}

这个代码有什么错误吗？如果是，我应该做些什么才能完全清理storageSrc和storageDest，以便根据需要多次重复使用它？

提前感谢您的回答。