網(wǎng)上搜索了很多，檢查中發(fā)現(xiàn)的信息劣勢，檢查源代碼

同Cv為類的開始。包含詳細(xì)的數(shù)據(jù)不（僅存儲指針）

CvMat

      typedef struct CvMat
{
    int type;
    int step;

    /* for internal use only */
    int* refcount;
    int hdr_refcount;

    union
    {
        uchar* ptr;
        short* s;
        int* i;
        float* fl;
        double* db;
    } data;
<pre name="code" class="cpp">


    

#ifdef __cplusplus union { int rows; int height; }; union { int cols; int width; };#else int rows; int cols;#endif}CvMat;

    
    
    
      <pre name="code" class="cpp">CV_INLINE CvMat cvMat( int rows, int cols, int type, void* data CV_DEFAULT(NULL))
{
    CvMat m;

    assert( (unsigned)CV_MAT_DEPTH(type) <= CV_64F );
    type = CV_MAT_TYPE(type);
    m.type = CV_MAT_MAGIC_VAL | CV_MAT_CONT_FLAG | type;
    m.cols = cols;
    m.rows = rows;
    m.step = m.cols*CV_ELEM_SIZE(type);
    m.data.ptr = (uchar*)data;
    m.refcount = NULL;
    m.hdr_refcount = 0;

    return m;
}

    
    

      

    
    

    

    

    
    
      CV_INLINE ?double ?cvmGet( const CvMat* mat, int row, int col )

{／／低效率訪問！

? ? int type;





? ? type = CV_MAT_TYPE(mat->type);

? ? assert( (unsigned)row < (unsigned)mat->rows &&

? ? ? ? ? ? (unsigned)col < (unsigned)mat->cols );





? ? if( type == CV_32FC1 )

? ? ? ? return ((float*)(void*)(mat->data.ptr + (size_t)mat->step*row))[col];

? ? else

? ? {

? ? ? ? assert( type == CV_64FC1 );

? ? ? ? return ((double*)(void*)(mat->data.ptr + (size_t)mat->step*row))[col];

? ? }

}









CV_INLINE ?void ?cvmSet( CvMat* mat, int row, int col, double value )

{

? ? int type;

? ? type = CV_MAT_TYPE(mat->type);

? ? assert( (unsigned)row < (unsigned)mat->rows &&

? ? ? ? ? ? (unsigned)col < (unsigned)mat->cols );





? ? if( type == CV_32FC1 )

? ? ? ? ((float*)(void*)(mat->data.ptr + (size_t)mat->step*row))[col] = (float)value;

? ? else

? ? {

? ? ? ? assert( type == CV_64FC1 );

? ? ? ? ((double*)(void*)(mat->data.ptr + (size_t)mat->step*row))[col] = (double)value;

? ? }

}


    
    
    
    
      typedef struct CvMatND

{

? ? int type;

? ? int dims;





? ? int* refcount;

? ? int hdr_refcount;





? ? union

? ? {

? ? ? ? uchar* ptr;

? ? ? ? float* fl;

? ? ? ? double* db;

? ? ? ? int* i;

? ? ? ? short* s;

? ? } data;





? ? struct

? ? {

? ? ? ? int size;

? ? ? ? int step;

? ? }

? ? dim[CV_MAX_DIM];

}

CvMatND;


    
    
    
    
      /* Basic element of the file storage - scalar or collection: */

typedef struct CvFileNode

{

? ? int tag;

? ? struct CvTypeInfo* info; /* type information

? ? ? ? ? ? (only for user-defined object, for others it is 0) */

? ? union

? ? {

? ? ? ? double f; /* scalar floating-point number */

? ? ? ? int i; ? ?/* scalar integer number */

? ? ? ? CvString str; /* text string */

? ? ? ? CvSeq* seq; /* sequence (ordered collection of file nodes) */

? ? ? ? CvFileNodeHash* map; /* map (collection of named file nodes) */

? ? } data;

}

CvFileNode;