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ultralytics 8.0.239 Ultralytics Actions and hub-sdk adoption (#7431)

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Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>
Co-authored-by: UltralyticsAssistant <web@ultralytics.com>
Co-authored-by: Burhan <62214284+Burhan-Q@users.noreply.github.com>
Co-authored-by: Kayzwer <68285002+Kayzwer@users.noreply.github.com>
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Glenn Jocher 2024-01-10 03:16:08 +01:00 • committed by GitHub
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commit fe27db2f6e
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168
ultralytics/models/sam/modules/tiny_encoder.py
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@ -28,11 +28,11 @@ class Conv2d_BN(torch.nn.Sequential):
drop path.
"""
super().__init__()
self.add_module('c', torch.nn.Conv2d(a, b, ks, stride, pad, dilation, groups, bias=False))
self.add_module("c", torch.nn.Conv2d(a, b, ks, stride, pad, dilation, groups, bias=False))
bn = torch.nn.BatchNorm2d(b)
torch.nn.init.constant_(bn.weight, bn_weight_init)
torch.nn.init.constant_(bn.bias, 0)
self.add_module('bn', bn)
self.add_module("bn", bn)
class PatchEmbed(nn.Module):
@ -146,11 +146,11 @@ class ConvLayer(nn.Module):
input_resolution,
depth,
activation,
drop_path=0.,
drop_path=0.0,
downsample=None,
use_checkpoint=False,
out_dim=None,
conv_expand_ratio=4.,
conv_expand_ratio=4.0,
):
"""
Initializes the ConvLayer with the given dimensions and settings.
@ -173,18 +173,25 @@ class ConvLayer(nn.Module):
self.use_checkpoint = use_checkpoint
# Build blocks
self.blocks = nn.ModuleList([
MBConv(
dim,
dim,
conv_expand_ratio,
activation,
drop_path[i] if isinstance(drop_path, list) else drop_path,
) for i in range(depth)])
self.blocks = nn.ModuleList(
[
MBConv(
dim,
dim,
conv_expand_ratio,
activation,
drop_path[i] if isinstance(drop_path, list) else drop_path,
)
for i in range(depth)
]
)
# Patch merging layer
self.downsample = None if downsample is None else downsample(
input_resolution, dim=dim, out_dim=out_dim, activation=activation)
self.downsample = (
None
if downsample is None
else downsample(input_resolution, dim=dim, out_dim=out_dim, activation=activation)
)
def forward(self, x):
"""Processes the input through a series of convolutional layers and returns the activated output."""
@ -200,7 +207,7 @@ class Mlp(nn.Module):
This layer takes an input with in_features, applies layer normalization and two fully-connected layers.
"""
def __init__(self, in_features, hidden_features=None, out_features=None, act_layer=nn.GELU, drop=0.):
def __init__(self, in_features, hidden_features=None, out_features=None, act_layer=nn.GELU, drop=0.0):
"""Initializes Attention module with the given parameters including dimension, key_dim, number of heads, etc."""
super().__init__()
out_features = out_features or in_features
@ -232,12 +239,12 @@ class Attention(torch.nn.Module):
"""
def __init__(
self,
dim,
key_dim,
num_heads=8,
attn_ratio=4,
resolution=(14, 14),
self,
dim,
key_dim,
num_heads=8,
attn_ratio=4,
resolution=(14, 14),
):
"""
Initializes the Attention module.
@ -256,7 +263,7 @@ class Attention(torch.nn.Module):
assert isinstance(resolution, tuple) and len(resolution) == 2
self.num_heads = num_heads
self.scale = key_dim ** -0.5
self.scale = key_dim**-0.5
self.key_dim = key_dim
self.nh_kd = nh_kd = key_dim * num_heads
self.d = int(attn_ratio * key_dim)
@ -279,13 +286,13 @@ class Attention(torch.nn.Module):
attention_offsets[offset] = len(attention_offsets)
idxs.append(attention_offsets[offset])
self.attention_biases = torch.nn.Parameter(torch.zeros(num_heads, len(attention_offsets)))
self.register_buffer('attention_bias_idxs', torch.LongTensor(idxs).view(N, N), persistent=False)
self.register_buffer("attention_bias_idxs", torch.LongTensor(idxs).view(N, N), persistent=False)
@torch.no_grad()
def train(self, mode=True):
"""Sets the module in training mode and handles attribute 'ab' based on the mode."""
super().train(mode)
if mode and hasattr(self, 'ab'):
if mode and hasattr(self, "ab"):
del self.ab
else:
self.ab = self.attention_biases[:, self.attention_bias_idxs]
@ -306,8 +313,9 @@ class Attention(torch.nn.Module):
v = v.permute(0, 2, 1, 3)
self.ab = self.ab.to(self.attention_biases.device)
attn = ((q @ k.transpose(-2, -1)) * self.scale +
(self.attention_biases[:, self.attention_bias_idxs] if self.training else self.ab))
attn = (q @ k.transpose(-2, -1)) * self.scale + (
self.attention_biases[:, self.attention_bias_idxs] if self.training else self.ab
)
attn = attn.softmax(dim=-1)
x = (attn @ v).transpose(1, 2).reshape(B, N, self.dh)
return self.proj(x)
@ -322,9 +330,9 @@ class TinyViTBlock(nn.Module):
input_resolution,
num_heads,
window_size=7,
mlp_ratio=4.,
drop=0.,
drop_path=0.,
mlp_ratio=4.0,
drop=0.0,
drop_path=0.0,
local_conv_size=3,
activation=nn.GELU,
):
@ -350,7 +358,7 @@ class TinyViTBlock(nn.Module):
self.dim = dim
self.input_resolution = input_resolution
self.num_heads = num_heads
assert window_size > 0, 'window_size must be greater than 0'
assert window_size > 0, "window_size must be greater than 0"
self.window_size = window_size
self.mlp_ratio = mlp_ratio
@ -358,7 +366,7 @@ class TinyViTBlock(nn.Module):
# self.drop_path = DropPath(drop_path) if drop_path > 0. else nn.Identity()
self.drop_path = nn.Identity()
assert dim % num_heads == 0, 'dim must be divisible by num_heads'
assert dim % num_heads == 0, "dim must be divisible by num_heads"
head_dim = dim // num_heads
window_resolution = (window_size, window_size)
@ -377,7 +385,7 @@ class TinyViTBlock(nn.Module):
"""
H, W = self.input_resolution
B, L, C = x.shape
assert L == H * W, 'input feature has wrong size'
assert L == H * W, "input feature has wrong size"
res_x = x
if H == self.window_size and W == self.window_size:
x = self.attn(x)
@ -394,8 +402,11 @@ class TinyViTBlock(nn.Module):
nH = pH // self.window_size
nW = pW // self.window_size
# Window partition
x = x.view(B, nH, self.window_size, nW, self.window_size,
C).transpose(2, 3).reshape(B * nH * nW, self.window_size * self.window_size, C)
x = (
x.view(B, nH, self.window_size, nW, self.window_size, C)
.transpose(2, 3)
.reshape(B * nH * nW, self.window_size * self.window_size, C)
)
x = self.attn(x)
# Window reverse
x = x.view(B, nH, nW, self.window_size, self.window_size, C).transpose(2, 3).reshape(B, pH, pW, C)
@ -417,8 +428,10 @@ class TinyViTBlock(nn.Module):
"""Returns a formatted string representing the TinyViTBlock's parameters: dimension, input resolution, number of
attentions heads, window size, and MLP ratio.
"""
return f'dim={self.dim}, input_resolution={self.input_resolution}, num_heads={self.num_heads}, ' \
f'window_size={self.window_size}, mlp_ratio={self.mlp_ratio}'
return (
f"dim={self.dim}, input_resolution={self.input_resolution}, num_heads={self.num_heads}, "
f"window_size={self.window_size}, mlp_ratio={self.mlp_ratio}"
)
class BasicLayer(nn.Module):
@ -431,9 +444,9 @@ class BasicLayer(nn.Module):
depth,
num_heads,
window_size,
mlp_ratio=4.,
drop=0.,
drop_path=0.,
mlp_ratio=4.0,
drop=0.0,
drop_path=0.0,
downsample=None,
use_checkpoint=False,
local_conv_size=3,
@ -468,22 +481,29 @@ class BasicLayer(nn.Module):
self.use_checkpoint = use_checkpoint
# Build blocks
self.blocks = nn.ModuleList([
TinyViTBlock(
dim=dim,
input_resolution=input_resolution,
num_heads=num_heads,
window_size=window_size,
mlp_ratio=mlp_ratio,
drop=drop,
drop_path=drop_path[i] if isinstance(drop_path, list) else drop_path,
local_conv_size=local_conv_size,
activation=activation,
) for i in range(depth)])
self.blocks = nn.ModuleList(
[
TinyViTBlock(
dim=dim,
input_resolution=input_resolution,
num_heads=num_heads,
window_size=window_size,
mlp_ratio=mlp_ratio,
drop=drop,
drop_path=drop_path[i] if isinstance(drop_path, list) else drop_path,
local_conv_size=local_conv_size,
activation=activation,
)
for i in range(depth)
]
)
# Patch merging layer
self.downsample = None if downsample is None else downsample(
input_resolution, dim=dim, out_dim=out_dim, activation=activation)
self.downsample = (
None
if downsample is None
else downsample(input_resolution, dim=dim, out_dim=out_dim, activation=activation)
)
def forward(self, x):
"""Performs forward propagation on the input tensor and returns a normalized tensor."""
@ -493,7 +513,7 @@ class BasicLayer(nn.Module):
def extra_repr(self) -> str:
"""Returns a string representation of the extra_repr function with the layer's parameters."""
return f'dim={self.dim}, input_resolution={self.input_resolution}, depth={self.depth}'
return f"dim={self.dim}, input_resolution={self.input_resolution}, depth={self.depth}"
class LayerNorm2d(nn.Module):
@ -549,8 +569,8 @@ class TinyViT(nn.Module):
depths=[2, 2, 6, 2],
num_heads=[3, 6, 12, 24],
window_sizes=[7, 7, 14, 7],
mlp_ratio=4.,
drop_rate=0.,
mlp_ratio=4.0,
drop_rate=0.0,
drop_path_rate=0.1,
use_checkpoint=False,
mbconv_expand_ratio=4.0,
@ -585,10 +605,9 @@ class TinyViT(nn.Module):
activation = nn.GELU
self.patch_embed = PatchEmbed(in_chans=in_chans,
embed_dim=embed_dims[0],
resolution=img_size,
activation=activation)
self.patch_embed = PatchEmbed(
in_chans=in_chans, embed_dim=embed_dims[0], resolution=img_size, activation=activation
)
patches_resolution = self.patch_embed.patches_resolution
self.patches_resolution = patches_resolution
@ -601,27 +620,30 @@ class TinyViT(nn.Module):
for i_layer in range(self.num_layers):
kwargs = dict(
dim=embed_dims[i_layer],
input_resolution=(patches_resolution[0] // (2 ** (i_layer - 1 if i_layer == 3 else i_layer)),
patches_resolution[1] // (2 ** (i_layer - 1 if i_layer == 3 else i_layer))),
input_resolution=(
patches_resolution[0] // (2 ** (i_layer - 1 if i_layer == 3 else i_layer)),
patches_resolution[1] // (2 ** (i_layer - 1 if i_layer == 3 else i_layer)),
),
# input_resolution=(patches_resolution[0] // (2 ** i_layer),
# patches_resolution[1] // (2 ** i_layer)),
depth=depths[i_layer],
drop_path=dpr[sum(depths[:i_layer]):sum(depths[:i_layer + 1])],
drop_path=dpr[sum(depths[:i_layer]) : sum(depths[: i_layer + 1])],
downsample=PatchMerging if (i_layer < self.num_layers - 1) else None,
use_checkpoint=use_checkpoint,
out_dim=embed_dims[min(i_layer + 1,
len(embed_dims) - 1)],
out_dim=embed_dims[min(i_layer + 1, len(embed_dims) - 1)],
activation=activation,
)
if i_layer == 0:
layer = ConvLayer(conv_expand_ratio=mbconv_expand_ratio, **kwargs)
else:
layer = BasicLayer(num_heads=num_heads[i_layer],
window_size=window_sizes[i_layer],
mlp_ratio=self.mlp_ratio,
drop=drop_rate,
local_conv_size=local_conv_size,
**kwargs)
layer = BasicLayer(
num_heads=num_heads[i_layer],
window_size=window_sizes[i_layer],
mlp_ratio=self.mlp_ratio,
drop=drop_rate,
local_conv_size=local_conv_size,
**kwargs,
)
self.layers.append(layer)
# Classifier head
@ -680,7 +702,7 @@ class TinyViT(nn.Module):
def _check_lr_scale(m):
"""Checks if the learning rate scale attribute is present in module's parameters."""
for p in m.parameters():
assert hasattr(p, 'lr_scale'), p.param_name
assert hasattr(p, "lr_scale"), p.param_name
self.apply(_check_lr_scale)
@ -698,7 +720,7 @@ class TinyViT(nn.Module):
@torch.jit.ignore
def no_weight_decay_keywords(self):
"""Returns a dictionary of parameter names where weight decay should not be applied."""
return {'attention_biases'}
return {"attention_biases"}
def forward_features(self, x):
"""Runs the input through the model layers and returns the transformed output."""