o
    ,h!                  
   @   s   d dl 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 )    )Optional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   Q/var/www/html/scripts/venv/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   r/   B   r0   c                 s   r)   r*   r+   r-   r   r   r   r/   D   r0   )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*   
rF   rA   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rA   r   r   r   _upcastH   s   rP   c                 C   s   | j tjtjfvr|  S | S r*   )rH   r   rI   rJ   rK   rO   r   r   r   _upcast_non_floatP   s   rQ   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)rR   rS   x1y1x2y2x1gy1gx2gy2gxkis1ykis1xkis2ykis2intsctkmaskunionkr   r   r   _loss_inter_unionW   s   
$$rh   )r   r*   )typingr   r   r   r   r   r!   rN   r   r   r&   r;   typer"   rF   rP   rQ   rh   r   r   r   r   <module>   s.    


