# coding=utf-8 # Copyright 2024 The HuggingFace Inc. team. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """RT-DETR model configuration""" from ...configuration_utils import PretrainedConfig from ...utils import logging from ...utils.backbone_utils import verify_backbone_config_arguments from ..auto import CONFIG_MAPPING from .configuration_rt_detr_resnet import RTDetrResNetConfig logger = logging.get_logger(__name__) class RTDetrConfig(PretrainedConfig): r""" This is the configuration class to store the configuration of a [`RTDetrModel`]. It is used to instantiate a RT-DETR model according to the specified arguments, defining the model architecture. Instantiating a configuration with the defaults will yield a similar configuration to that of the RT-DETR [checkpoing/todo](https://huggingface.co/checkpoing/todo) architecture. Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the documentation from [`PretrainedConfig`] for more information. Args: initializer_range (`float`, *optional*, defaults to 0.01): The standard deviation of the truncated_normal_initializer for initializing all weight matrices. initializer_bias_prior_prob (`float`, *optional*): The prior probability used by the bias initializer to initialize biases for `enc_score_head` and `class_embed`. If `None`, `prior_prob` computed as `prior_prob = 1 / (num_labels + 1)` while initializing model weights. layer_norm_eps (`float`, *optional*, defaults to 1e-05): The epsilon used by the layer normalization layers. batch_norm_eps (`float`, *optional*, defaults to 1e-05): The epsilon used by the batch normalization layers. backbone_config (`Dict`, *optional*, defaults to `RTDetrResNetConfig()`): The configuration of the backbone model. backbone (`str`, *optional*): Name of backbone to use when `backbone_config` is `None`. If `use_pretrained_backbone` is `True`, this will load the corresponding pretrained weights from the timm or transformers library. If `use_pretrained_backbone` is `False`, this loads the backbone's config and uses that to initialize the backbone with random weights. use_pretrained_backbone (`bool`, *optional*, defaults to `False`): Whether to use pretrained weights for the backbone. use_timm_backbone (`bool`, *optional*, defaults to `False`): Whether to load `backbone` from the timm library. If `False`, the backbone is loaded from the transformers library. freeze_backbone_batch_norms (`bool`, *optional*, defaults to `True`): Whether to freeze the batch normalization layers in the backbone. backbone_kwargs (`dict`, *optional*): Keyword arguments to be passed to AutoBackbone when loading from a checkpoint e.g. `{'out_indices': (0, 1, 2, 3)}`. Cannot be specified if `backbone_config` is set. encoder_hidden_dim (`int`, *optional*, defaults to 256): Dimension of the layers in hybrid encoder. encoder_in_channels (`list`, *optional*, defaults to `[512, 1024, 2048]`): Multi level features input for encoder. feat_strides (`List[int]`, *optional*, defaults to `[8, 16, 32]`): Strides used in each feature map. encoder_layers (`int`, *optional*, defaults to 1): Total of layers to be used by the encoder. encoder_ffn_dim (`int`, *optional*, defaults to 1024): Dimension of the "intermediate" (often named feed-forward) layer in decoder. encoder_attention_heads (`int`, *optional*, defaults to 8): Number of attention heads for each attention layer in the Transformer encoder. dropout (`float`, *optional*, defaults to 0.0): The ratio for all dropout layers. activation_dropout (`float`, *optional*, defaults to 0.0): The dropout ratio for activations inside the fully connected layer. encode_proj_layers (`List[int]`, *optional*, defaults to `[2]`): Indexes of the projected layers to be used in the encoder. positional_encoding_temperature (`int`, *optional*, defaults to 10000): The temperature parameter used to create the positional encodings. encoder_activation_function (`str`, *optional*, defaults to `"gelu"`): The non-linear activation function (function or string) in the encoder and pooler. If string, `"gelu"`, `"relu"`, `"silu"` and `"gelu_new"` are supported. activation_function (`str`, *optional*, defaults to `"silu"`): The non-linear activation function (function or string) in the general layer. If string, `"gelu"`, `"relu"`, `"silu"` and `"gelu_new"` are supported. eval_size (`Tuple[int, int]`, *optional*): Height and width used to computes the effective height and width of the position embeddings after taking into account the stride. normalize_before (`bool`, *optional*, defaults to `False`): Determine whether to apply layer normalization in the transformer encoder layer before self-attention and feed-forward modules. hidden_expansion (`float`, *optional*, defaults to 1.0): Expansion ratio to enlarge the dimension size of RepVGGBlock and CSPRepLayer. d_model (`int`, *optional*, defaults to 256): Dimension of the layers exclude hybrid encoder. num_queries (`int`, *optional*, defaults to 300): Number of object queries. decoder_in_channels (`list`, *optional*, defaults to `[256, 256, 256]`): Multi level features dimension for decoder decoder_ffn_dim (`int`, *optional*, defaults to 1024): Dimension of the "intermediate" (often named feed-forward) layer in decoder. num_feature_levels (`int`, *optional*, defaults to 3): The number of input feature levels. decoder_n_points (`int`, *optional*, defaults to 4): The number of sampled keys in each feature level for each attention head in the decoder. decoder_layers (`int`, *optional*, defaults to 6): Number of decoder layers. decoder_attention_heads (`int`, *optional*, defaults to 8): Number of attention heads for each attention layer in the Transformer decoder. decoder_activation_function (`str`, *optional*, defaults to `"relu"`): The non-linear activation function (function or string) in the decoder. If string, `"gelu"`, `"relu"`, `"silu"` and `"gelu_new"` are supported. attention_dropout (`float`, *optional*, defaults to 0.0): The dropout ratio for the attention probabilities. num_denoising (`int`, *optional*, defaults to 100): The total number of denoising tasks or queries to be used for contrastive denoising. label_noise_ratio (`float`, *optional*, defaults to 0.5): The fraction of denoising labels to which random noise should be added. box_noise_scale (`float`, *optional*, defaults to 1.0): Scale or magnitude of noise to be added to the bounding boxes. learn_initial_query (`bool`, *optional*, defaults to `False`): Indicates whether the initial query embeddings for the decoder should be learned during training anchor_image_size (`Tuple[int, int]`, *optional*): Height and width of the input image used during evaluation to generate the bounding box anchors. If None, automatic generate anchor is applied. disable_custom_kernels (`bool`, *optional*, defaults to `True`): Whether to disable custom kernels. with_box_refine (`bool`, *optional*, defaults to `True`): Whether to apply iterative bounding box refinement, where each decoder layer refines the bounding boxes based on the predictions from the previous layer. is_encoder_decoder (`bool`, *optional*, defaults to `True`): Whether the architecture has an encoder decoder structure. matcher_alpha (`float`, *optional*, defaults to 0.25): Parameter alpha used by the Hungarian Matcher. matcher_gamma (`float`, *optional*, defaults to 2.0): Parameter gamma used by the Hungarian Matcher. matcher_class_cost (`float`, *optional*, defaults to 2.0): The relative weight of the class loss used by the Hungarian Matcher. matcher_bbox_cost (`float`, *optional*, defaults to 5.0): The relative weight of the bounding box loss used by the Hungarian Matcher. matcher_giou_cost (`float`, *optional*, defaults to 2.0): The relative weight of the giou loss of used by the Hungarian Matcher. use_focal_loss (`bool`, *optional*, defaults to `True`): Parameter informing if focal focal should be used. auxiliary_loss (`bool`, *optional*, defaults to `True`): Whether auxiliary decoding losses (loss at each decoder layer) are to be used. focal_loss_alpha (`float`, *optional*, defaults to 0.75): Parameter alpha used to compute the focal loss. focal_loss_gamma (`float`, *optional*, defaults to 2.0): Parameter gamma used to compute the focal loss. weight_loss_vfl (`float`, *optional*, defaults to 1.0): Relative weight of the varifocal loss in the object detection loss. weight_loss_bbox (`float`, *optional*, defaults to 5.0): Relative weight of the L1 bounding box loss in the object detection loss. weight_loss_giou (`float`, *optional*, defaults to 2.0): Relative weight of the generalized IoU loss in the object detection loss. eos_coefficient (`float`, *optional*, defaults to 0.0001): Relative classification weight of the 'no-object' class in the object detection loss. Examples: ```python >>> from transformers import RTDetrConfig, RTDetrModel >>> # Initializing a RT-DETR configuration >>> configuration = RTDetrConfig() >>> # Initializing a model (with random weights) from the configuration >>> model = RTDetrModel(configuration) >>> # Accessing the model configuration >>> configuration = model.config ```""" model_type = "rt_detr" layer_types = ["basic", "bottleneck"] attribute_map = { "hidden_size": "d_model", "num_attention_heads": "encoder_attention_heads", } def __init__( self, initializer_range=0.01, initializer_bias_prior_prob=None, layer_norm_eps=1e-5, batch_norm_eps=1e-5, # backbone backbone_config=None, backbone=None, use_pretrained_backbone=False, use_timm_backbone=False, freeze_backbone_batch_norms=True, backbone_kwargs=None, # encoder HybridEncoder encoder_hidden_dim=256, encoder_in_channels=[512, 1024, 2048], feat_strides=[8, 16, 32], encoder_layers=1, encoder_ffn_dim=1024, encoder_attention_heads=8, dropout=0.0, activation_dropout=0.0, encode_proj_layers=[2], positional_encoding_temperature=10000, encoder_activation_function="gelu", activation_function="silu", eval_size=None, normalize_before=False, hidden_expansion=1.0, # decoder RTDetrTransformer d_model=256, num_queries=300, decoder_in_channels=[256, 256, 256], decoder_ffn_dim=1024, num_feature_levels=3, decoder_n_points=4, decoder_layers=6, decoder_attention_heads=8, decoder_activation_function="relu", attention_dropout=0.0, num_denoising=100, label_noise_ratio=0.5, box_noise_scale=1.0, learn_initial_query=False, anchor_image_size=None, disable_custom_kernels=True, with_box_refine=True, is_encoder_decoder=True, # Loss matcher_alpha=0.25, matcher_gamma=2.0, matcher_class_cost=2.0, matcher_bbox_cost=5.0, matcher_giou_cost=2.0, use_focal_loss=True, auxiliary_loss=True, focal_loss_alpha=0.75, focal_loss_gamma=2.0, weight_loss_vfl=1.0, weight_loss_bbox=5.0, weight_loss_giou=2.0, eos_coefficient=1e-4, **kwargs, ): self.initializer_range = initializer_range self.initializer_bias_prior_prob = initializer_bias_prior_prob self.layer_norm_eps = layer_norm_eps self.batch_norm_eps = batch_norm_eps # backbone if backbone_config is None and backbone is None: logger.info( "`backbone_config` and `backbone` are `None`. Initializing the config with the default `RTDetr-ResNet` backbone." ) backbone_config = RTDetrResNetConfig( num_channels=3, embedding_size=64, hidden_sizes=[256, 512, 1024, 2048], depths=[3, 4, 6, 3], layer_type="bottleneck", hidden_act="relu", downsample_in_first_stage=False, downsample_in_bottleneck=False, out_features=None, out_indices=[2, 3, 4], ) elif isinstance(backbone_config, dict): backbone_model_type = backbone_config.pop("model_type") config_class = CONFIG_MAPPING[backbone_model_type] backbone_config = config_class.from_dict(backbone_config) verify_backbone_config_arguments( use_timm_backbone=use_timm_backbone, use_pretrained_backbone=use_pretrained_backbone, backbone=backbone, backbone_config=backbone_config, backbone_kwargs=backbone_kwargs, ) self.backbone_config = backbone_config self.backbone = backbone self.use_pretrained_backbone = use_pretrained_backbone self.use_timm_backbone = use_timm_backbone self.freeze_backbone_batch_norms = freeze_backbone_batch_norms self.backbone_kwargs = backbone_kwargs # encoder self.encoder_hidden_dim = encoder_hidden_dim self.encoder_in_channels = encoder_in_channels self.feat_strides = feat_strides self.encoder_attention_heads = encoder_attention_heads self.encoder_ffn_dim = encoder_ffn_dim self.dropout = dropout self.activation_dropout = activation_dropout self.encode_proj_layers = encode_proj_layers self.encoder_layers = encoder_layers self.positional_encoding_temperature = positional_encoding_temperature self.eval_size = eval_size self.normalize_before = normalize_before self.encoder_activation_function = encoder_activation_function self.activation_function = activation_function self.hidden_expansion = hidden_expansion # decoder self.d_model = d_model self.num_queries = num_queries self.decoder_ffn_dim = decoder_ffn_dim self.decoder_in_channels = decoder_in_channels self.num_feature_levels = num_feature_levels self.decoder_n_points = decoder_n_points self.decoder_layers = decoder_layers self.decoder_attention_heads = decoder_attention_heads self.decoder_activation_function = decoder_activation_function self.attention_dropout = attention_dropout self.num_denoising = num_denoising self.label_noise_ratio = label_noise_ratio self.box_noise_scale = box_noise_scale self.learn_initial_query = learn_initial_query self.anchor_image_size = anchor_image_size self.auxiliary_loss = auxiliary_loss self.disable_custom_kernels = disable_custom_kernels self.with_box_refine = with_box_refine # Loss self.matcher_alpha = matcher_alpha self.matcher_gamma = matcher_gamma self.matcher_class_cost = matcher_class_cost self.matcher_bbox_cost = matcher_bbox_cost self.matcher_giou_cost = matcher_giou_cost self.use_focal_loss = use_focal_loss self.focal_loss_alpha = focal_loss_alpha self.focal_loss_gamma = focal_loss_gamma self.weight_loss_vfl = weight_loss_vfl self.weight_loss_bbox = weight_loss_bbox self.weight_loss_giou = weight_loss_giou self.eos_coefficient = eos_coefficient super().__init__(is_encoder_decoder=is_encoder_decoder, **kwargs) @property def num_attention_heads(self) -> int: return self.encoder_attention_heads @property def hidden_size(self) -> int: return self.d_model @classmethod def from_backbone_configs(cls, backbone_config: PretrainedConfig, **kwargs): """Instantiate a [`RTDetrConfig`] (or a derived class) from a pre-trained backbone model configuration and DETR model configuration. Args: backbone_config ([`PretrainedConfig`]): The backbone configuration. Returns: [`RTDetrConfig`]: An instance of a configuration object """ return cls( backbone_config=backbone_config, **kwargs, ) __all__ = ["RTDetrConfig"]