Function cvGetDims

deps/opencv/modules/core/src/array.cpp:1093–1143

Returns a number of array dimensions

// Returns a number of array dimensions
CV_IMPL int
cvGetDims( const CvArr* arr, int* sizes )
{
    int dims = -1;
    if( CV_IS_MAT_HDR( arr ))
    {
        CvMat* mat = (CvMat*)arr;

        dims = 2;
        if( sizes )
        {
            sizes[0] = mat->rows;
            sizes[1] = mat->cols;
        }
    }
    else if( CV_IS_IMAGE( arr ))
    {
        IplImage* img = (IplImage*)arr;
        dims = 2;

        if( sizes )
        {
            sizes[0] = img->height;
            sizes[1] = img->width;
        }
    }
    else if( CV_IS_MATND_HDR( arr ))
    {
        CvMatND* mat = (CvMatND*)arr;
        dims = mat->dims;

        if( sizes )
        {
            int i;
            for( i = 0; i < dims; i++ )
                sizes[i] = mat->dim[i].size;
        }
    }
    else if( CV_IS_SPARSE_MAT_HDR( arr ))
    {
        CvSparseMat* mat = (CvSparseMat*)arr;
        dims = mat->dims;

        if( sizes )
            memcpy( sizes, mat->size, dims*sizeof(sizes[0]));
    }
    else
        CV_Error( CV_StsBadArg, "unrecognized or unsupported array type" );

    return dims;
}


// Returns the size of particular array dimension