mmagic.models.editors.animatediff.unet_3d

Module Contents

Classes

UNet3DConditionOutput	Output of UNet3DCondtion.
UNet3DConditionMotionModel

Attributes

logger

mmagic.models.editors.animatediff.unet_3d.logger

class mmagic.models.editors.animatediff.unet_3d.UNet3DConditionOutput

Bases: diffusers.utils.BaseOutput

Output of UNet3DCondtion.

sample: torch.FloatTensor

class mmagic.models.editors.animatediff.unet_3d.UNet3DConditionMotionModel(sample_size: Optional[int] = None, in_channels: int = 4, out_channels: int = 4, center_input_sample: bool = False, flip_sin_to_cos: bool = True, freq_shift: int = 0, down_block_types: Tuple[str] = ('CrossAttnDownBlock3D', 'CrossAttnDownBlock3D', 'CrossAttnDownBlock3D', 'DownBlock3D'), mid_block_type: str = 'UNetMidBlock3DCrossAttn', up_block_types: Tuple[str] = ('UpBlock3D', 'CrossAttnUpBlock3D', 'CrossAttnUpBlock3D', 'CrossAttnUpBlock3D'), only_cross_attention: Union[bool, Tuple[bool]] = False, block_out_channels: Tuple[int] = (320, 640, 1280, 1280), layers_per_block: int = 2, downsample_padding: int = 1, mid_block_scale_factor: float = 1, act_fn: str = 'silu', norm_num_groups: int = 32, norm_eps: float = 1e-05, cross_attention_dim: int = 768, attention_head_dim: Union[int, Tuple[int]] = 8, dual_cross_attention: bool = False, use_linear_projection: bool = False, class_embed_type: Optional[str] = None, num_class_embeds: Optional[int] = None, upcast_attention: bool = False, resnet_time_scale_shift: str = 'default', use_inflated_groupnorm=False, use_motion_module=False, motion_module_resolutions=(1, 2, 4, 8), motion_module_mid_block=False, motion_module_decoder_only=False, motion_module_type=None, motion_module_kwargs={}, unet_use_cross_frame_attention=None, unet_use_temporal_attention=None, subfolder=None, from_pretrained=None, unet_addtion_kwargs=None)

Bases: diffusers.models.modeling_utils.ModelMixin, diffusers.configuration_utils.ConfigMixin

_supports_gradient_checkpointing = True

Implementation of UNet3DConditionMotionModel

init_weights(subfolder=None, from_pretrained=None)

Init weights for models.

We just use the initialization method proposed in the original paper.

参数

pretrained (str, optional) – Path for pretrained weights. If given None, pretrained weights will not be loaded. Defaults to None.

set_attention_slice(slice_size)

Enable sliced attention computation.

When this option is enabled, the attention module will split the input tensor in slices, to compute attention in several steps. This is useful to save some memory in exchange for a small speed decrease.

参数

slice_size (str or int or `list(int) – defaults to “auto”): When “auto”, halves the input to the attention heads, so attention will be computed in two steps. If “max”, maximum amount of memory will be saved by running only one slice at a time. If a number is provided, uses as many slices as attention_head_dim // slice_size. In this case, attention_head_dim’ must be a multiple of `slice_size.

_set_gradient_checkpointing(module, value=False)

set gradient checkpoint.

forward(sample: torch.FloatTensor, timestep: Union[torch.Tensor, float, int], encoder_hidden_states: torch.Tensor, class_labels: Optional[torch.Tensor] = None, attention_mask: Optional[torch.Tensor] = None, return_dict: bool = True) → Union[UNet3DConditionOutput, Tuple]

参数

• sample (torch.FloatTensor) – (batch, channel, height, width)

• tensor (noisy inputs) –

• timestep (torch.FloatTensor or float or int) –

• timesteps ((batch)) –

• encoder_hidden_states (torch.FloatTensor) –

• (batch –

• sequence_length –

• states (feature_dim) encoder hidden) –

• return_dict (bool, optional, defaults to True) – Whether or not to return a [UNet3DConditionOutput] instead of a plain tuple.

返回

[UNet3DConditionOutput] if return_dict is True, otherwise a tuple. When returning a tuple, the first element is the sample tensor.

返回类型

[UNet3DConditionOutput] or tuple

classmethod from_pretrained_2d(pretrained_model_path, subfolder=None, unet_additional_kwargs=None)

a class method for initialization.