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[7주차 / 임종우 / 논문리뷰] ViTPose: Simple Vision Transformer Baselines for Human Pose Estimation
본문
- 지난 주차 ViTPose 논문 리뷰에 이어 official github의 코드 리뷰를 진행하였음.
- 공식 github
1. Backbone - ViT
Patch Embedding
class PatchEmbed(nn.Module): """ Image to Patch Embedding """ def __init__(self, img_size=224, patch_size=16, in_chans=3, embed_dim=768, ratio=1): super().__init__() img_size = to_2tuple(img_size) patch_size = to_2tuple(patch_size) num_patches = (img_size[1] // patch_size[1]) * (img_size[0] // patch_size[0]) * (ratio ** 2) self.patch_shape = (int(img_size[0] // patch_size[0] * ratio), int(img_size[1] // patch_size[1] * ratio)) self.origin_patch_shape = (int(img_size[0] // patch_size[0]), int(img_size[1] // patch_size[1])) self.img_size = img_size self.patch_size = patch_size self.num_patches = num_patches self.proj = nn.Conv2d(in_chans, embed_dim, kernel_size=patch_size, stride=(patch_size[0] // ratio), padding=4 + 2 * (ratio//2-1)) def forward(self, x, **kwargs): B, C, H, W = x.shape x = self.proj(x) Hp, Wp = x.shape[2], x.shape[3] x = x.flatten(2).transpose(1, 2) return x, (Hp, Wp)MLP
class Mlp(nn.Module): def __init__(self, in_features, hidden_features=None, out_features=None, act_layer=nn.GELU, drop=0.): super().__init__() out_features = out_features or in_features hidden_features = hidden_features or in_features self.fc1 = nn.Linear(in_features, hidden_features) self.act = act_layer() self.fc2 = nn.Linear(hidden_features, out_features) self.drop = nn.Dropout(drop) def forward(self, x): x = self.fc1(x) x = self.act(x) x = self.fc2(x) x = self.drop(x) return xAttention(multi head)
class Attention(nn.Module): def __init__( self, dim, num_heads=8, qkv_bias=False, qk_scale=None, attn_drop=0., proj_drop=0., attn_head_dim=None,): super().__init__() self.num_heads = num_heads head_dim = dim // num_heads self.dim = dim if attn_head_dim is not None: head_dim = attn_head_dim all_head_dim = head_dim * self.num_heads self.scale = qk_scale or head_dim ** -0.5 self.qkv = nn.Linear(dim, all_head_dim * 3, bias=qkv_bias) self.attn_drop = nn.Dropout(attn_drop) self.proj = nn.Linear(all_head_dim, dim) self.proj_drop = nn.Dropout(proj_drop) def forward(self, x): B, N, C = x.shape qkv = self.qkv(x) qkv = qkv.reshape(B, N, 3, self.num_heads, -1).permute(2, 0, 3, 1, 4) q, k, v = qkv[0], qkv[1], qkv[2] # make torchscript happy (cannot use tensor as tuple) q = q * self.scale attn = (q @ k.transpose(-2, -1)) attn = attn.softmax(dim=-1) attn = self.attn_drop(attn) x = (attn @ v).transpose(1, 2).reshape(B, N, -1) x = self.proj(x) x = self.proj_drop(x) return xBlock (Transformer block)
class Block(nn.Module): def __init__(self, dim, num_heads, mlp_ratio=4., qkv_bias=False, qk_scale=None, drop=0., attn_drop=0., drop_path=0., act_layer=nn.GELU, norm_layer=nn.LayerNorm, attn_head_dim=None ): super().__init__() self.norm1 = norm_layer(dim) self.attn = Attention( dim, num_heads=num_heads, qkv_bias=qkv_bias, qk_scale=qk_scale, attn_drop=attn_drop, proj_drop=drop, attn_head_dim=attn_head_dim ) # NOTE: drop path for stochastic depth, we shall see if this is better than dropout here self.drop_path = DropPath(drop_path) if drop_path > 0. else nn.Identity() self.norm2 = norm_layer(dim) mlp_hidden_dim = int(dim * mlp_ratio) self.mlp = Mlp(in_features=dim, hidden_features=mlp_hidden_dim, act_layer=act_layer, drop=drop) def forward(self, x): x = x + self.drop_path(self.attn(self.norm1(x))) x = x + self.drop_path(self.mlp(self.norm2(x))) return xViT
class ViT(BaseBackbone): def __init__(self, img_size=224, patch_size=16, in_chans=3, num_classes=80, embed_dim=768, depth=12, num_heads=12, mlp_ratio=4., qkv_bias=False, qk_scale=None, drop_rate=0., attn_drop_rate=0., drop_path_rate=0., hybrid_backbone=None, norm_layer=None, use_checkpoint=False, frozen_stages=-1, ratio=1, last_norm=True, patch_padding='pad', freeze_attn=False, freeze_ffn=False, ): # Protect mutable default arguments super(ViT, self).__init__() norm_layer = norm_layer or partial(nn.LayerNorm, eps=1e-6) self.num_classes = num_classes self.num_features = self.embed_dim = embed_dim # num_features for consistency with other models self.frozen_stages = frozen_stages self.use_checkpoint = use_checkpoint self.patch_padding = patch_padding self.freeze_attn = freeze_attn self.freeze_ffn = freeze_ffn self.depth = depth if hybrid_backbone is not None: self.patch_embed = HybridEmbed( hybrid_backbone, img_size=img_size, in_chans=in_chans, embed_dim=embed_dim) else: self.patch_embed = PatchEmbed( img_size=img_size, patch_size=patch_size, in_chans=in_chans, embed_dim=embed_dim, ratio=ratio) num_patches = self.patch_embed.num_patches # since the pretraining model has class token self.pos_embed = nn.Parameter(torch.zeros(1, num_patches + 1, embed_dim)) dpr = [x.item() for x in torch.linspace(0, drop_path_rate, depth)] # stochastic depth decay rule self.blocks = nn.ModuleList([ Block( dim=embed_dim, num_heads=num_heads, mlp_ratio=mlp_ratio, qkv_bias=qkv_bias, qk_scale=qk_scale, drop=drop_rate, attn_drop=attn_drop_rate, drop_path=dpr[i], norm_layer=norm_layer, ) for i in range(depth)]) self.last_norm = norm_layer(embed_dim) if last_norm else nn.Identity() if self.pos_embed is not None: trunc_normal_(self.pos_embed, std=.02) self._freeze_stages() def _freeze_stages(self): """Freeze parameters.""" if self.frozen_stages >= 0: self.patch_embed.eval() for param in self.patch_embed.parameters(): param.requires_grad = False for i in range(1, self.frozen_stages + 1): m = self.blocks[i] m.eval() for param in m.parameters(): param.requires_grad = False if self.freeze_attn: for i in range(0, self.depth): m = self.blocks[i] m.attn.eval() m.norm1.eval() for param in m.attn.parameters(): param.requires_grad = False for param in m.norm1.parameters(): param.requires_grad = False if self.freeze_ffn: self.pos_embed.requires_grad = False self.patch_embed.eval() for param in self.patch_embed.parameters(): param.requires_grad = False for i in range(0, self.depth): m = self.blocks[i] m.mlp.eval() m.norm2.eval() for param in m.mlp.parameters(): param.requires_grad = False for param in m.norm2.parameters(): param.requires_grad = False def init_weights(self, pretrained=None): """Initialize the weights in backbone. Args: pretrained (str, optional): Path to pre-trained weights. Defaults to None. """ super().init_weights(pretrained, patch_padding=self.patch_padding) if pretrained is None: def _init_weights(m): if isinstance(m, nn.Linear): trunc_normal_(m.weight, std=.02) if isinstance(m, nn.Linear) and m.bias is not None: nn.init.constant_(m.bias, 0) elif isinstance(m, nn.LayerNorm): nn.init.constant_(m.bias, 0) nn.init.constant_(m.weight, 1.0) self.apply(_init_weights) def get_num_layers(self): return len(self.blocks) @torch.jit.ignore def no_weight_decay(self): return {'pos_embed', 'cls_token'} def forward_features(self, x): B, C, H, W = x.shape x, (Hp, Wp) = self.patch_embed(x) if self.pos_embed is not None: # fit for multiple GPU training # since the first element for pos embed (sin-cos manner) is zero, it will cause no difference x = x + self.pos_embed[:, 1:] + self.pos_embed[:, :1] for blk in self.blocks: if self.use_checkpoint: x = checkpoint.checkpoint(blk, x) else: x = blk(x) x = self.last_norm(x) xp = x.permute(0, 2, 1).reshape(B, -1, Hp, Wp).contiguous() return xp def forward(self, x): x = self.forward_features(x) return x def train(self, mode=True): """Convert the model into training mode.""" super().train(mode) self._freeze_stages()
2. Head
code
# Copyright (c) OpenMMLab. All rights reserved. import torch import torch.nn as nn from mmcv.cnn import (build_conv_layer, build_norm_layer, build_upsample_layer, constant_init, normal_init) from mmpose.core.evaluation import pose_pck_accuracy from mmpose.core.post_processing import flip_back from mmpose.models.builder import build_loss from mmpose.models.utils.ops import resize from ..builder import HEADS import torch.nn.functional as F from .topdown_heatmap_base_head import TopdownHeatmapBaseHead @HEADS.register_module() class TopdownHeatmapSimpleHead(TopdownHeatmapBaseHead): """Top-down heatmap simple head. paper ref: Bin Xiao et al. ``Simple Baselines for Human Pose Estimation and Tracking``. TopdownHeatmapSimpleHead is consisted of (>=0) number of deconv layers and a simple conv2d layer. Args: in_channels (int): Number of input channels out_channels (int): Number of output channels num_deconv_layers (int): Number of deconv layers. num_deconv_layers should >= 0. Note that 0 means no deconv layers. num_deconv_filters (list|tuple): Number of filters. If num_deconv_layers > 0, the length of num_deconv_kernels (list|tuple): Kernel sizes. in_index (int|Sequence[int]): Input feature index. Default: 0 input_transform (str|None): Transformation type of input features. Options: 'resize_concat', 'multiple_select', None. Default: None. - 'resize_concat': Multiple feature maps will be resized to the same size as the first one and then concat together. Usually used in FCN head of HRNet. - 'multiple_select': Multiple feature maps will be bundle into a list and passed into decode head. - None: Only one select feature map is allowed. align_corners (bool): align_corners argument of F.interpolate. Default: False. loss_keypoint (dict): Config for keypoint loss. Default: None. """ def __init__(self, in_channels, out_channels, num_deconv_layers=3, num_deconv_filters=(256, 256, 256), num_deconv_kernels=(4, 4, 4), extra=None, in_index=0, input_transform=None, align_corners=False, loss_keypoint=None, train_cfg=None, test_cfg=None, upsample=0,): super().__init__() self.in_channels = in_channels self.loss = build_loss(loss_keypoint) self.upsample = upsample self.train_cfg = {} if train_cfg is None else train_cfg self.test_cfg = {} if test_cfg is None else test_cfg self.target_type = self.test_cfg.get('target_type', 'GaussianHeatmap') self._init_inputs(in_channels, in_index, input_transform) self.in_index = in_index self.align_corners = align_corners if extra is not None and not isinstance(extra, dict): raise TypeError('extra should be dict or None.') if num_deconv_layers > 0: self.deconv_layers = self._make_deconv_layer( num_deconv_layers, num_deconv_filters, num_deconv_kernels, ) elif num_deconv_layers == 0: self.deconv_layers = nn.Identity() else: raise ValueError( f'num_deconv_layers ({num_deconv_layers}) should >= 0.') identity_final_layer = False if extra is not None and 'final_conv_kernel' in extra: assert extra['final_conv_kernel'] in [0, 1, 3] if extra['final_conv_kernel'] == 3: padding = 1 elif extra['final_conv_kernel'] == 1: padding = 0 else: # 0 for Identity mapping. identity_final_layer = True kernel_size = extra['final_conv_kernel'] else: kernel_size = 1 padding = 0 if identity_final_layer: self.final_layer = nn.Identity() else: conv_channels = num_deconv_filters[ -1] if num_deconv_layers > 0 else self.in_channels layers = [] if extra is not None: num_conv_layers = extra.get('num_conv_layers', 0) num_conv_kernels = extra.get('num_conv_kernels', [1] * num_conv_layers) for i in range(num_conv_layers): layers.append( build_conv_layer( dict(type='Conv2d'), in_channels=conv_channels, out_channels=conv_channels, kernel_size=num_conv_kernels[i], stride=1, padding=(num_conv_kernels[i] - 1) // 2)) layers.append( build_norm_layer(dict(type='BN'), conv_channels)[1]) layers.append(nn.ReLU(inplace=True)) layers.append( build_conv_layer( cfg=dict(type='Conv2d'), in_channels=conv_channels, out_channels=out_channels, kernel_size=kernel_size, stride=1, padding=padding)) if len(layers) > 1: self.final_layer = nn.Sequential(*layers) else: self.final_layer = layers[0] def get_loss(self, output, target, target_weight): """Calculate top-down keypoint loss. Note: - batch_size: N - num_keypoints: K - heatmaps height: H - heatmaps weight: W Args: output (torch.Tensor[N,K,H,W]): Output heatmaps. target (torch.Tensor[N,K,H,W]): Target heatmaps. target_weight (torch.Tensor[N,K,1]): Weights across different joint types. """ losses = dict() assert not isinstance(self.loss, nn.Sequential) assert target.dim() == 4 and target_weight.dim() == 3 losses['heatmap_loss'] = self.loss(output, target, target_weight) return losses def get_accuracy(self, output, target, target_weight): """Calculate accuracy for top-down keypoint loss. Note: - batch_size: N - num_keypoints: K - heatmaps height: H - heatmaps weight: W Args: output (torch.Tensor[N,K,H,W]): Output heatmaps. target (torch.Tensor[N,K,H,W]): Target heatmaps. target_weight (torch.Tensor[N,K,1]): Weights across different joint types. """ accuracy = dict() if self.target_type == 'GaussianHeatmap': _, avg_acc, _ = pose_pck_accuracy( output.detach().cpu().numpy(), target.detach().cpu().numpy(), target_weight.detach().cpu().numpy().squeeze(-1) > 0) accuracy['acc_pose'] = float(avg_acc) return accuracy def forward(self, x): """Forward function.""" x = self._transform_inputs(x) x = self.deconv_layers(x) x = self.final_layer(x) return x def inference_model(self, x, flip_pairs=None): """Inference function. Returns: output_heatmap (np.ndarray): Output heatmaps. Args: x (torch.Tensor[N,K,H,W]): Input features. flip_pairs (None | list[tuple]): Pairs of keypoints which are mirrored. """ output = self.forward(x) if flip_pairs is not None: output_heatmap = flip_back( output.detach().cpu().numpy(), flip_pairs, target_type=self.target_type) # feature is not aligned, shift flipped heatmap for higher accuracy if self.test_cfg.get('shift_heatmap', False): output_heatmap[:, :, :, 1:] = output_heatmap[:, :, :, :-1] else: output_heatmap = output.detach().cpu().numpy() return output_heatmap def _init_inputs(self, in_channels, in_index, input_transform): """Check and initialize input transforms. The in_channels, in_index and input_transform must match. Specifically, when input_transform is None, only single feature map will be selected. So in_channels and in_index must be of type int. When input_transform is not None, in_channels and in_index must be list or tuple, with the same length. Args: in_channels (int|Sequence[int]): Input channels. in_index (int|Sequence[int]): Input feature index. input_transform (str|None): Transformation type of input features. Options: 'resize_concat', 'multiple_select', None. - 'resize_concat': Multiple feature maps will be resize to the same size as first one and than concat together. Usually used in FCN head of HRNet. - 'multiple_select': Multiple feature maps will be bundle into a list and passed into decode head. - None: Only one select feature map is allowed. """ if input_transform is not None: assert input_transform in ['resize_concat', 'multiple_select'] self.input_transform = input_transform self.in_index = in_index if input_transform is not None: assert isinstance(in_channels, (list, tuple)) assert isinstance(in_index, (list, tuple)) assert len(in_channels) == len(in_index) if input_transform == 'resize_concat': self.in_channels = sum(in_channels) else: self.in_channels = in_channels else: assert isinstance(in_channels, int) assert isinstance(in_index, int) self.in_channels = in_channels def _transform_inputs(self, inputs): """Transform inputs for decoder. Args: inputs (list[Tensor] | Tensor): multi-level img features. Returns: Tensor: The transformed inputs """ if not isinstance(inputs, list): if not isinstance(inputs, list): if self.upsample > 0: inputs = resize( input=F.relu(inputs), scale_factor=self.upsample, mode='bilinear', align_corners=self.align_corners ) return inputs if self.input_transform == 'resize_concat': inputs = [inputs[i] for i in self.in_index] upsampled_inputs = [ resize( input=x, size=inputs[0].shape[2:], mode='bilinear', align_corners=self.align_corners) for x in inputs ] inputs = torch.cat(upsampled_inputs, dim=1) elif self.input_transform == 'multiple_select': inputs = [inputs[i] for i in self.in_index] else: inputs = inputs[self.in_index] return inputs def _make_deconv_layer(self, num_layers, num_filters, num_kernels): """Make deconv layers.""" if num_layers != len(num_filters): error_msg = f'num_layers({num_layers}) ' \ f'!= length of num_filters({len(num_filters)})' raise ValueError(error_msg) if num_layers != len(num_kernels): error_msg = f'num_layers({num_layers}) ' \ f'!= length of num_kernels({len(num_kernels)})' raise ValueError(error_msg) layers = [] for i in range(num_layers): kernel, padding, output_padding = \ self._get_deconv_cfg(num_kernels[i]) planes = num_filters[i] layers.append( build_upsample_layer( dict(type='deconv'), in_channels=self.in_channels, out_channels=planes, kernel_size=kernel, stride=2, padding=padding, output_padding=output_padding, bias=False)) layers.append(nn.BatchNorm2d(planes)) layers.append(nn.ReLU(inplace=True)) self.in_channels = planes return nn.Sequential(*layers) def init_weights(self): """Initialize model weights.""" for _, m in self.deconv_layers.named_modules(): if isinstance(m, nn.ConvTranspose2d): normal_init(m, std=0.001) elif isinstance(m, nn.BatchNorm2d): constant_init(m, 1) for m in self.final_layer.modules(): if isinstance(m, nn.Conv2d): normal_init(m, std=0.001, bias=0) elif isinstance(m, nn.BatchNorm2d): constant_init(m, 1)config for classic head
keypoint_head=dict( type='TopdownHeatmapSimpleHead', in_channels=768, num_deconv_layers=2, num_deconv_filters=(256, 256), num_deconv_kernels=(4, 4), extra=dict(final_conv_kernel=1, ), out_channels=channel_cfg['num_output_channels'], loss_keypoint=dict(type='JointsMSELoss', use_target_weight=True))config for simple head
keypoint_head=dict( type='TopdownHeatmapSimpleHead', in_channels=768, num_deconv_layers=0, num_deconv_filters=[], num_deconv_kernels=[], upsample=4, extra=dict(final_conv_kernel=3, ), out_channels=channel_cfg['num_output_channels'], loss_keypoint=dict(type='JointsMSELoss', use_target_weight=True)),
3. Detector(total model)
- Top-down method
code
# Copyright (c) OpenMMLab. All rights reserved. import warnings import mmcv import numpy as np from mmcv.image import imwrite from mmcv.utils.misc import deprecated_api_warning from mmcv.visualization.image import imshow from mmpose.core import imshow_bboxes, imshow_keypoints from .. import builder from ..builder import POSENETS from .base import BasePose try: from mmcv.runner import auto_fp16 except ImportError: warnings.warn('auto_fp16 from mmpose will be deprecated from v0.15.0' 'Please install mmcv>=1.1.4') from mmpose.core import auto_fp16 @POSENETS.register_module() class TopDown(BasePose): """Top-down pose detectors. Args: backbone (dict): Backbone modules to extract feature. keypoint_head (dict): Keypoint head to process feature. train_cfg (dict): Config for training. Default: None. test_cfg (dict): Config for testing. Default: None. pretrained (str): Path to the pretrained models. loss_pose (None): Deprecated arguments. Please use `loss_keypoint` for heads instead. """ def __init__(self, backbone, neck=None, keypoint_head=None, train_cfg=None, test_cfg=None, pretrained=None, loss_pose=None): super().__init__() self.fp16_enabled = False self.backbone = builder.build_backbone(backbone) self.train_cfg = train_cfg self.test_cfg = test_cfg if neck is not None: self.neck = builder.build_neck(neck) if keypoint_head is not None: keypoint_head['train_cfg'] = train_cfg keypoint_head['test_cfg'] = test_cfg if 'loss_keypoint' not in keypoint_head and loss_pose is not None: warnings.warn( '`loss_pose` for TopDown is deprecated, ' 'use `loss_keypoint` for heads instead. See ' 'https://github.com/open-mmlab/mmpose/pull/382' ' for more information.', DeprecationWarning) keypoint_head['loss_keypoint'] = loss_pose self.keypoint_head = builder.build_head(keypoint_head) self.init_weights(pretrained=pretrained) @property def with_neck(self): """Check if has neck.""" return hasattr(self, 'neck') @property def with_keypoint(self): """Check if has keypoint_head.""" return hasattr(self, 'keypoint_head') def init_weights(self, pretrained=None): """Weight initialization for model.""" self.backbone.init_weights(pretrained) if self.with_neck: self.neck.init_weights() if self.with_keypoint: self.keypoint_head.init_weights() @auto_fp16(apply_to=('img', )) def forward(self, img, target=None, target_weight=None, img_metas=None, return_loss=True, return_heatmap=False, **kwargs): """Calls either forward_train or forward_test depending on whether return_loss=True. Note this setting will change the expected inputs. When `return_loss=True`, img and img_meta are single-nested (i.e. Tensor and List[dict]), and when `resturn_loss=False`, img and img_meta should be double nested (i.e. List[Tensor], List[List[dict]]), with the outer list indicating test time augmentations. Note: - batch_size: N - num_keypoints: K - num_img_channel: C (Default: 3) - img height: imgH - img width: imgW - heatmaps height: H - heatmaps weight: W Args: img (torch.Tensor[NxCximgHximgW]): Input images. target (torch.Tensor[NxKxHxW]): Target heatmaps. target_weight (torch.Tensor[NxKx1]): Weights across different joint types. img_metas (list(dict)): Information about data augmentation By default this includes: - "image_file: path to the image file - "center": center of the bbox - "scale": scale of the bbox - "rotation": rotation of the bbox - "bbox_score": score of bbox return_loss (bool): Option to `return loss`. `return loss=True` for training, `return loss=False` for validation & test. return_heatmap (bool) : Option to return heatmap. Returns: dict|tuple: if `return loss` is true, then return losses. \ Otherwise, return predicted poses, boxes, image paths \ and heatmaps. """ if return_loss: return self.forward_train(img, target, target_weight, img_metas, **kwargs) return self.forward_test( img, img_metas, return_heatmap=return_heatmap, **kwargs) def forward_train(self, img, target, target_weight, img_metas, **kwargs): """Defines the computation performed at every call when training.""" output = self.backbone(img) if self.with_neck: output = self.neck(output) if self.with_keypoint: output = self.keypoint_head(output) # if return loss losses = dict() if self.with_keypoint: keypoint_losses = self.keypoint_head.get_loss( output, target, target_weight) losses.update(keypoint_losses) keypoint_accuracy = self.keypoint_head.get_accuracy( output, target, target_weight) losses.update(keypoint_accuracy) return losses def forward_test(self, img, img_metas, return_heatmap=False, **kwargs): """Defines the computation performed at every call when testing.""" assert img.size(0) == len(img_metas) batch_size, _, img_height, img_width = img.shape if batch_size > 1: assert 'bbox_id' in img_metas[0] result = {} features = self.backbone(img) if self.with_neck: features = self.neck(features) if self.with_keypoint: output_heatmap = self.keypoint_head.inference_model( features, flip_pairs=None) if self.test_cfg.get('flip_test', True): img_flipped = img.flip(3) features_flipped = self.backbone(img_flipped) if self.with_neck: features_flipped = self.neck(features_flipped) if self.with_keypoint: output_flipped_heatmap = self.keypoint_head.inference_model( features_flipped, img_metas[0]['flip_pairs']) output_heatmap = (output_heatmap + output_flipped_heatmap) * 0.5 if self.with_keypoint: keypoint_result = self.keypoint_head.decode( img_metas, output_heatmap, img_size=[img_width, img_height]) result.update(keypoint_result) if not return_heatmap: output_heatmap = None result['output_heatmap'] = output_heatmap return result def forward_dummy(self, img): """Used for computing network FLOPs. See ``tools/get_flops.py``. Args: img (torch.Tensor): Input image. Returns: Tensor: Output heatmaps. """ output = self.backbone(img) if self.with_neck: output = self.neck(output) if self.with_keypoint: output = self.keypoint_head(output) return output @deprecated_api_warning({'pose_limb_color': 'pose_link_color'}, cls_name='TopDown') def show_result(self, img, result, skeleton=None, kpt_score_thr=0.3, bbox_color='green', pose_kpt_color=None, pose_link_color=None, text_color='white', radius=4, thickness=1, font_scale=0.5, bbox_thickness=1, win_name='', show=False, show_keypoint_weight=False, wait_time=0, out_file=None): """Draw `result` over `img`. Args: img (str or Tensor): The image to be displayed. result (list[dict]): The results to draw over `img` (bbox_result, pose_result). skeleton (list[list]): The connection of keypoints. skeleton is 0-based indexing. kpt_score_thr (float, optional): Minimum score of keypoints to be shown. Default: 0.3. bbox_color (str or tuple or :obj:`Color`): Color of bbox lines. pose_kpt_color (np.array[Nx3]`): Color of N keypoints. If None, do not draw keypoints. pose_link_color (np.array[Mx3]): Color of M links. If None, do not draw links. text_color (str or tuple or :obj:`Color`): Color of texts. radius (int): Radius of circles. thickness (int): Thickness of lines. font_scale (float): Font scales of texts. win_name (str): The window name. show (bool): Whether to show the image. Default: False. show_keypoint_weight (bool): Whether to change the transparency using the predicted confidence scores of keypoints. wait_time (int): Value of waitKey param. Default: 0. out_file (str or None): The filename to write the image. Default: None. Returns: Tensor: Visualized img, only if not `show` or `out_file`. """ img = mmcv.imread(img) img = img.copy() bbox_result = [] bbox_labels = [] pose_result = [] for res in result: if 'bbox' in res: bbox_result.append(res['bbox']) bbox_labels.append(res.get('label', None)) pose_result.append(res['keypoints']) if bbox_result: bboxes = np.vstack(bbox_result) # draw bounding boxes imshow_bboxes( img, bboxes, labels=bbox_labels, colors=bbox_color, text_color=text_color, thickness=bbox_thickness, font_scale=font_scale, show=False) if pose_result: imshow_keypoints(img, pose_result, skeleton, kpt_score_thr, pose_kpt_color, pose_link_color, radius, thickness) if show: imshow(img, win_name, wait_time) if out_file is not None: imwrite(img, out_file) return img
Config
cod
_base_ = [ '../../../../_base_/default_runtime.py', '../../../../_base_/datasets/coco.py' ] evaluation = dict(interval=10, metric='mAP', save_best='AP') optimizer = dict(type='AdamW', lr=5e-4, betas=(0.9, 0.999), weight_decay=0.1, constructor='LayerDecayOptimizerConstructor', paramwise_cfg=dict( num_layers=32, layer_decay_rate=0.85, custom_keys={ 'bias': dict(decay_multi=0.), 'pos_embed': dict(decay_mult=0.), 'relative_position_bias_table': dict(decay_mult=0.), 'norm': dict(decay_mult=0.) } ) ) optimizer_config = dict(grad_clip=dict(max_norm=1., norm_type=2)) # learning policy lr_config = dict( policy='step', warmup='linear', warmup_iters=500, warmup_ratio=0.001, step=[170, 200]) total_epochs = 210 target_type = 'GaussianHeatmap' channel_cfg = dict( num_output_channels=17, dataset_joints=17, dataset_channel=[ [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16], ], inference_channel=[ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 ]) # model settings model = dict( type='TopDown', pretrained=None, backbone=dict( type='ViT', img_size=(256, 192), patch_size=16, embed_dim=1280, depth=32, num_heads=16, ratio=1, use_checkpoint=False, mlp_ratio=4, qkv_bias=True, drop_path_rate=0.55, ), keypoint_head=dict( type='TopdownHeatmapSimpleHead', in_channels=1280, num_deconv_layers=2, num_deconv_filters=(256, 256), num_deconv_kernels=(4, 4), extra=dict(final_conv_kernel=1, ), out_channels=channel_cfg['num_output_channels'], loss_keypoint=dict(type='JointsMSELoss', use_target_weight=True)), train_cfg=dict(), test_cfg=dict( flip_test=True, post_process='default', shift_heatmap=False, target_type=target_type, modulate_kernel=11, use_udp=True)) data_cfg = dict( image_size=[192, 256], heatmap_size=[48, 64], num_output_channels=channel_cfg['num_output_channels'], num_joints=channel_cfg['dataset_joints'], dataset_channel=channel_cfg['dataset_channel'], inference_channel=channel_cfg['inference_channel'], soft_nms=False, nms_thr=1.0, oks_thr=0.9, vis_thr=0.2, use_gt_bbox=False, det_bbox_thr=0.0, bbox_file='data/coco/person_detection_results/' 'COCO_val2017_detections_AP_H_56_person.json', ) train_pipeline = [ dict(type='LoadImageFromFile'), dict(type='TopDownRandomFlip', flip_prob=0.5), dict( type='TopDownHalfBodyTransform', num_joints_half_body=8, prob_half_body=0.3), dict( type='TopDownGetRandomScaleRotation', rot_factor=40, scale_factor=0.5), dict(type='TopDownAffine', use_udp=True), dict(type='ToTensor'), dict( type='NormalizeTensor', mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225]), dict( type='TopDownGenerateTarget', sigma=2, encoding='UDP', target_type=target_type), dict( type='Collect', keys=['img', 'target', 'target_weight'], meta_keys=[ 'image_file', 'joints_3d', 'joints_3d_visible', 'center', 'scale', 'rotation', 'bbox_score', 'flip_pairs' ]), ] val_pipeline = [ dict(type='LoadImageFromFile'), dict(type='TopDownAffine', use_udp=True), dict(type='ToTensor'), dict( type='NormalizeTensor', mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225]), dict( type='Collect', keys=['img'], meta_keys=[ 'image_file', 'center', 'scale', 'rotation', 'bbox_score', 'flip_pairs' ]), ] test_pipeline = val_pipeline data_root = 'data/coco' data = dict( samples_per_gpu=64, workers_per_gpu=4, val_dataloader=dict(samples_per_gpu=32), test_dataloader=dict(samples_per_gpu=32), train=dict( type='TopDownCocoDataset', ann_file=f'{data_root}/annotations/person_keypoints_train2017.json', img_prefix=f'{data_root}/train2017/', data_cfg=data_cfg, pipeline=train_pipeline, dataset_info={{_base_.dataset_info}}), val=dict( type='TopDownCocoDataset', ann_file=f'{data_root}/annotations/person_keypoints_val2017.json', img_prefix=f'{data_root}/val2017/', data_cfg=data_cfg, pipeline=val_pipeline, dataset_info={{_base_.dataset_info}}), test=dict( type='TopDownCocoDataset', ann_file=f'{data_root}/annotations/person_keypoints_val2017.json', img_prefix=f'{data_root}/val2017/', data_cfg=data_cfg, pipeline=test_pipeline, dataset_info={{_base_.dataset_info}}), )
Fine tuning
https://github.com/ViTAE-Transformer/ViTPose/tree/main
- weight들이 .pth 파일로 올라와있으므로, 이를 이용하여 fine-tuning이 가능함.
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