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Args: spatial_size (tuple of ints): The spacial size of the input as ``(H, W)``. temporal_size (int): The temporal size ``T`` of the input. block_setting (sequence of MSBlockConfig): The Network structure. residual_pool (bool): If True, use MViTv2 pooling residual connection. residual_with_cls_embed (bool): If True, the addition on the residual connection will include the class embedding. rel_pos_embed (bool): If True, use MViTv2's relative positional embeddings. proj_after_attn (bool): If True, apply the projection after the attention. dropout (float): Dropout rate. Default: 0.0. attention_dropout (float): Attention dropout rate. Default: 0.0. stochastic_depth_prob: (float): Stochastic depth rate. Default: 0.0. num_classes (int): The number of classes. block (callable, optional): Module specifying the layer which consists of the attention and mlp. norm_layer (callable, optional): Module specifying the normalization layer to use. patch_embed_kernel (tuple of ints): The kernel of the convolution that patchifies the input. patch_embed_stride (tuple of ints): The stride of the convolution that patchifies the input. patch_embed_padding (tuple of ints): The padding of the convolution that patchifies the input. rz+The configuration parameter can't be empty.Ngư>)epsr )Z in_channelsZ out_channelsZ kernel_sizerrcSsg|]\}}||qSr)r)rrgrr)r)r*rsz!MViT.__init__..r.r)rrrrrr) rrrr|rrrrrcSsg|]\}}||qSr)r)rr)r)r*r srRTrrrr)#rCrDrrr7rrrFrrr conv_projziprr pos_encodingZ ModuleListblocks enumeraterEr"rr@rGrrheadmodulesrrrweightrZ constant_ parameters)rIrrrrr|rrrrrrrrrrrZtotal_stage_blocksrZstage_block_idrZsd_probmweightsrKr)r*rDsv)        z MViT.__init__rcCst|ddd}||}|ddd}||}|jjf|jj}|jD]}|||\}}qN||}|dddf}| |}|S)Nrsrrr.) r;rflattenrUrrrrr@r)rIr2rNrr)r)r*r`!s     z MViT.forward) rrrrNNrrr)r$r%r&r r'r rrbrrrrFrarDrTrcr`rdr)r)rKr*rs:     x)rrrprogresskwargsr,c Ks|dk rbt|dt|jd|jdd|jddks>tt|d|jdt|d|jd|dd }|dd }tf||||d d |d d|dd |dd |d|}|dk r||j|dd|S)Nr categoriesmin_sizerr.rrmin_temporal_sizerrFr|Trr)rrrrr|rrr)rZ check_hash)rrmetaAssertionErrorpoprZload_state_dictZget_state_dict)rrrrrrrmodelr)r)r*_mvit8s,         rc @sJeZdZedeedddddddedd d d d d diddd dZeZdS)rz:https://download.pytorch.org/models/mvit_v1_b-dbeb1030.pthr?rr?rrZ crop_sizeZ resize_sizeZmeanrrzShttps://github.com/facebookresearch/pytorchvideo/blob/main/docs/source/model_zoo.mdThe weights were ported from the paper. The accuracies are estimated on video-level with parameters `frame_rate=7.5`, `clips_per_video=5`, and `clip_len=16`ip. Kinetics-400gJ +S@gh|?eW@zacc@1zacc@5guVQ@g rxa@ rrrZrecipeZ_docsZ num_paramsZ_metricsZ_ops _file_sizeurlZ transformsrN r$r%r&rrrrKINETICS400_V1DEFAULTr)r)r)r*rYs2c @sJeZdZedeedddddddedd d d d d diddd dZeZdS)rz:https://download.pytorch.org/models/mvit_v2_s-ae3be167.pthrrrrrrzChttps://github.com/facebookresearch/SlowFast/blob/main/MODEL_ZOO.mdrirg r0T@g(\W@rguVP@g?5^I|`@rrNrr)r)r)r*rzs2Z pretrained)rT)rr)rrrr,cKszt|}ddddddddddddddddgddddddddddddddddgddddddddddddddddggd d d ggd d d gggggggggggd d d gggd d d gd d d gd d d gd d d gd d d gd d d gd d d gd d d gd d d gd d d gd d d gd d d gd d d gd d d gd d d gd d d gggdddggdddgggggggggggdddgggdddgdddgdddgdddgdddgdddgdddgdddgdddgdddgdddgdddgdddgdddgdddgdddggd }g}tt|d D]Z}|t|d ||d ||d ||d||d||d||d|d qtfdd|dd|dd||d|S)a Constructs a base MViTV1 architecture from `Multiscale Vision Transformers `__. .. betastatus:: video module Args: weights (:class:`~torchvision.models.video.MViT_V1_B_Weights`, optional): The pretrained weights to use. See :class:`~torchvision.models.video.MViT_V1_B_Weights` below for more details, and possible values. By default, no pre-trained weights are used. progress (bool, optional): If True, displays a progress bar of the download to stderr. Default is True. **kwargs: parameters passed to the ``torchvision.models.video.MViT`` base class. Please refer to the `source code `_ for more details about this class. .. autoclass:: torchvision.models.video.MViT_V1_B_Weights :members: r.rrO`r rrrr r!r"r#rrrr r!r"r#rrFr皙?)rrrrr|rrr)rverifyrangerrErrrrrrconfigrir)r)r*rs """44,          cKst|}ddddddddddddddddgddddddddddddddddgddddddddddddddddgd d d gd d d gd d d gd d d gd d d gd d d gd d d gd d d gd d d gd d d gd d d gd d d gd d d gd d d gd d d gd d d ggd d d gd d d gd d d gd d d gd d d gd d d gd d d gd d d gd d d gd d d gd d d gd d d gd d d gd d d gd d d gd d d ggdddgdddgdddgdddgdddgdddgdddgdddgdddgdddgdddgdddgdddgdddgdddgdddggdddgdddgdddgdddgdddgdddgdddgdddgdddgdddgdddgdddgdddgdddgdddgdddggd }g}tt|d D]Z}|t|d ||d ||d ||d||d||d||d|d qtfdd|dddd|dd||d |S)aCConstructs a small MViTV2 architecture from `Multiscale Vision Transformers `__ and `MViTv2: Improved Multiscale Vision Transformers for Classification and Detection `__. .. betastatus:: video module Args: weights (:class:`~torchvision.models.video.MViT_V2_S_Weights`, optional): The pretrained weights to use. See :class:`~torchvision.models.video.MViT_V2_S_Weights` below for more details, and possible values. By default, no pre-trained weights are used. progress (bool, optional): If True, displays a progress bar of the download to stderr. Default is True. **kwargs: parameters passed to the ``torchvision.models.video.MViT`` base class. Please refer to the `source code `_ for more details about this class. .. autoclass:: torchvision.models.video.MViT_V2_S_Weights :members: r.rrOrrrrrr rrrrr r!r"r#rrTFrr) rrrrr|rrrrr)rrrrrErrrrr)r)r*rs """N          );r dataclassesr functoolsrtypingrrrrrr r rTZtorch.fxZtorch.nnrFZopsr r Ztransforms._presetsrutilsrZ_apirrr_metarZ_utilsrr__all__rr'r1rcr;r=Zfxwraprar>rjrzrbr~rrrrrrrrrrrr)r)r)r*sx  $         ,   <  H !!!$`