o
    Vh.                  
   @   s   d dl mZmZmZmZ d dlZd dlmZmZ ddee dedefddZ	d	ee defd
dZ
d	eeee f fddZ	ddejdeee  deee ee f fddZdedefddZdedefddZdejdejdeejejf fddZdS )    )ListOptionalTupleUnionN)nnTensortensorsdimreturnc                 C   s    t | dkr
| d S t| |S )zg
    Efficient version of torch.cat that avoids a copy if there is only a single element in a list
       r   )lentorchcat)r   r	    r   J/var/www/vscode/kcb/lib/python3.10/site-packages/torchvision/ops/_utils.py_cat   s   r   boxesc              	   C   sp   t dd | D dd}g }t| D ]\}}|t|d d d df | qt |dd}tj||gdd}|S )Nc                 S   s   g | ]}|qS r   r   ).0br   r   r   
<listcomp>   s    z/convert_boxes_to_roi_format.<locals>.<listcomp>r   r	   r   )r   	enumerateappendr   	full_liker   )r   concat_boxestempir   idsroisr   r   r   convert_boxes_to_roi_format   s   $r   c                 C   sh   t | ttfr| D ]}t|ddkd q	d S t | tjr,t| ddkd d S tdd d S )Nr      zNThe shape of the tensor in the boxes list is not correct as List[Tensor[L, 4]]   z5The boxes tensor shape is not correct as Tensor[K, 5]Fz>boxes is expected to be a Tensor[L, 5] or a List[Tensor[K, 4]])
isinstancelisttupler   _assertsizer   )r   _tensorr   r   r   check_roi_boxes_shape   s   r(   modelnorm_classesc                 C   s   |st jjjt jt jt jjjt jg}|D ]}t	|t j
s$td| dqt|}g }g }|  D ]6}t| d rI|dd |jddD  q1t||r[|dd | D  q1|dd | D  q1||fS )	NzClass z  is not a subclass of nn.Module.c                 s       | ]}|j r|V  qd S Nrequires_gradr   pr   r   r   	<genexpr>@       z-split_normalization_params.<locals>.<genexpr>F)recursec                 s   r+   r,   r-   r/   r   r   r   r1   B   r2   c                 s   r+   r,   r-   r/   r   r   r   r1   D   r2   )r   modules	batchnorm
_BatchNorm	LayerNorm	GroupNorminstancenorm_InstanceNormLocalResponseNorm
issubclassModule
ValueErrorr$   nextchildrenextend
parametersr"   )r)   r*   tclassesnorm_paramsother_paramsmoduler   r   r   split_normalization_params)   s*   
rH   rC   c                 C   sD   |   r| jtjtjfv r| S |  S | jtjtjfv r| S |  S r,   )	is_floating_pointdtyper   float32float64floatint32int64intrC   r   r   r   _upcastH   s   rR   c                 C   s   | j tjtjfvr|  S | S r,   )rJ   r   rK   rL   rM   rQ   r   r   r   _upcast_non_floatP   s   rS   boxes1boxes2c                 C   s   | j dd\}}}}|j dd\}}}}	t||}
t||}t||}t||	}t|}||k||
k@ }|| |
|  || ||   ||< || ||  || |	|   | }||fS )Nr   )unbindr   maxmin
zeros_like)rT   rU   x1y1x2y2x1gy1gx2gy2gxkis1ykis1xkis2ykis2intsctkmaskunionkr   r   r   _loss_inter_unionW   s   
$$rj   )r   r,   )typingr   r   r   r   r   r   r   rP   r   r   r(   r=   typerH   rR   rS   rj   r   r   r   r   <module>   s.    


