<dd>bottom_blob; An ncnn.Mat. If ncnn version >= 1.0.20201208, the dimension of the bottom_blob should be no more than 4, or the dimension of the bottom_blob should be no more than 3.</dd>
</dl>
#### Outputs
<dl>
<dt><tt>outputs[0]</tt>: T</dt>
<dd>top_blob; 1-D tensor of shape (bottom_blob.dims,), `bottom_blob.dims` is the input blob dimensions.</dd>