
    h                     r    d dl Z d dlZd dlmZ d dlmZmZmZmZ d dl	m
Z
 ddlmZ ddlmZ  G d d	e      Zy)
    N)Path)AnyCallableOptionalUnion)Image   )download_and_extract_archive)VisionDatasetc                        e Zd ZdZdZddgZdZdZ	 	 	 	 	 ddee	e
f   ded	ee   d
ee   dee   def fdZdedeeef   fdZdedefdZdefdZede	fd       ZdefdZddZ xZS )Kittiu  `KITTI <http://www.cvlibs.net/datasets/kitti/eval_object.php?obj_benchmark>`_ Dataset.

    It corresponds to the "left color images of object" dataset, for object detection.

    Args:
        root (str or ``pathlib.Path``): Root directory where images are downloaded to.
            Expects the following folder structure if download=False:

            .. code::

                <root>
                    └── Kitti
                        └─ raw
                            ├── training
                            |   ├── image_2
                            |   └── label_2
                            └── testing
                                └── image_2
        train (bool, optional): Use ``train`` split if true, else ``test`` split.
            Defaults to ``train``.
        transform (callable, optional): A function/transform that takes in a PIL image
            and returns a transformed version. E.g, ``transforms.PILToTensor``
        target_transform (callable, optional): A function/transform that takes in the
            target and transforms it.
        transforms (callable, optional): A function/transform that takes input sample
            and its target as entry and returns a transformed version.
        download (bool, optional): If true, downloads the dataset from the internet and
            puts it in root directory. If dataset is already downloaded, it is not
            downloaded again.

    z0https://s3.eu-central-1.amazonaws.com/avg-kitti/zdata_object_image_2.zipzdata_object_label_2.zipimage_2label_2roottrain	transformtarget_transform
transformsdownloadc           	      J   t         
|   ||||       g | _        g | _        || _        | j                  rdnd| _        |r| j                          | j                         st        d      t        j                  j                  | j                  | j
                  | j                        }| j                  r?t        j                  j                  | j                  | j
                  | j                        }t        j                  |      D ]  }	| j                  j!                  t        j                  j                  ||	             | j                  sI| j                  j!                  t        j                  j                  |	j#                  d      d    d              y )N)r   r   r   trainingtestingz<Dataset not found. You may use download=True to download it..r   z.txt)super__init__imagestargetsr   	_locationr   _check_existsRuntimeErrorospathjoin_raw_folderimage_dir_namelabels_dir_namelistdirappendsplit)selfr   r   r   r   r   r   	image_dir
labels_dirimg_file	__class__s             X/var/www/html/eduruby.in/venv/lib/python3.12/site-packages/torchvision/datasets/kitti.pyr   zKitti.__init__5   s;    	-!	 	 	
 
'+zzyMMO!!#]^^GGLL!1!14>>4CVCVW	::d&6&6H\H\]J

9- 	_HKKrww||Ix@Azz##BGGLLs@STU@V?WW[=\$]^	_    indexreturnc                     t        j                  | j                  |         }| j                  r| j	                  |      nd}| j
                  r| j                  ||      \  }}||fS )a  Get item at a given index.

        Args:
            index (int): Index
        Returns:
            tuple: (image, target), where
            target is a list of dictionaries with the following keys:

            - type: str
            - truncated: float
            - occluded: int
            - alpha: float
            - bbox: float[4]
            - dimensions: float[3]
            - locations: float[3]
            - rotation_y: float

        N)r   openr   r   _parse_targetr   )r*   r1   imagetargets       r/   __getitem__zKitti.__getitem__V   sX    & 

4;;u-..2jj##E*d?? OOE6:ME6f}r0   c                    g }t        | j                  |         5 }t        j                  |d      }|D ]  }|j	                  |d   t        |d         t        |d         t        |d         |dd D cg c]  }t        |       c}|dd	 D cg c]  }t        |       c}|d	d
 D cg c]  }t        |       c}t        |d
         d        	 d d d        |S c c}w c c}w c c}w # 1 sw Y   |S xY w)N )	delimiterr   r	                     )type	truncatedoccludedalphabbox
dimensionslocation
rotation_y)r4   r   csvreaderr(   floatint)r*   r1   r7   inpcontentlinexs          r/   r5   zKitti._parse_targeto   s    $,,u%& 	#jj4G  $Q%*47^$'QL!&tAw37!9 =aq =9=a&DAuQx&D7;Br{$C!U1X$C&+DHo		  !>&D$C	 s6   AC/5C 	C/C%"	C/+C*=C/ C//C9c                 ,    t        | j                        S N)lenr   r*   s    r/   __len__zKitti.__len__   s    4;;r0   c                     t         j                  j                  | j                  | j                  j
                  d      S )Nraw)r!   r"   r#   r   r.   __name__rU   s    r/   r$   zKitti._raw_folder   s'    ww||DIIt~~'>'>FFr0   c                       j                   g} j                  r|j                   j                         t	         fd|D              S )z#Check if the data directory exists.c              3      K   | ]V  }t         j                  j                  t         j                  j                  j                  j
                  |             X y wrS   )r!   r"   isdirr#   r$   r   ).0fnamer*   s     r/   	<genexpr>z&Kitti._check_exists.<locals>.<genexpr>   s;     m\a277==d.>.>PU!VWms   AA)r%   r   r(   r&   all)r*   folderss   ` r/   r   zKitti._check_exists   s<    &&'::NN4//0melmmmr0   c                     | j                         ryt        j                  | j                  d       | j                  D ](  }t        | j                   | | j                  |       * y)z4Download the KITTI data if it doesn't exist already.NT)exist_ok)urldownload_rootfilename)r   r!   makedirsr$   	resourcesr
   data_url)r*   r^   s     r/   r   zKitti.download   s`     
D$$t4 ^^ 	E(}}oeW-"..	r0   )TNNNF)r2   N)rY   
__module____qualname____doc__ri   rh   r%   r&   r   strr   boolr   r   r   rM   tupler   r8   listr5   rV   propertyr$   r   r   __classcell__)r.   s   @r/   r   r      s   @ BH!!I NO
 (,/3)-_CI_ _ H%	_
 #8,_ X&_ _B sCx 23 4 &    GS G Gnt nr0   r   )rJ   r!   pathlibr   typingr   r   r   r   PILr   utilsr
   visionr   r    r0   r/   <module>ry      s+    
 	  1 1  / !RM Rr0   