feat(model): 重构模型并添加新功能

- 重新组织了模型结构,增加了新的特征融合模块
- 添加了深度可分离卷积块和新的细节特征提取模块
- 更新了数据处理流程,使用了新的数据集路径
- 调整了训练参数,增加了训练轮次和学习率- 优化了损失函数,使用了Huber损失替代MSE损失
This commit is contained in:
zjut 2024-11-12 10:37:56 +08:00
parent e1a339e04b
commit fa8106838e
5 changed files with 226 additions and 124 deletions

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@ -1,2 +1,5 @@
.idea/ .idea/
status.md status.md
data/
test_img/
test_result/

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@ -39,16 +39,17 @@ def is_low_contrast(image, fraction_threshold=0.1, lower_percentile=10,
ratio = (limits[1] - limits[0]) / limits[1] ratio = (limits[1] - limits[0]) / limits[1]
return ratio < fraction_threshold return ratio < fraction_threshold
data_name="MSRS_train" data_name="YYX_sar_opr_data"
img_size=128 #patch size img_size=256 #patch size
stride=200 #patch stride stride=200 #patch stride
IR_files = sorted(get_img_file(r"MSRS_train/MSRS-main/train/ir")) IR_files = sorted(get_img_file(r"/media/star/8TB/whaiDownload/YYX-OPT-SAR-main/SAR_1"))
VIS_files = sorted(get_img_file(r"MSRS_train/MSRS-main/train/vi")) VIS_files = sorted(get_img_file(r"/media/star/8TB/whaiDownload/YYX-OPT-SAR-main/OPR_1"))
assert len(IR_files) == len(VIS_files) assert len(IR_files) == len(VIS_files)
h5f = h5py.File(os.path.join('.\\data', h5path= os.path.join('/home/star/whaiDir/PFCFuse/data/',
data_name+'_imgsize_'+str(img_size)+"_stride_"+str(stride)+'.h5'), data_name+'_imgsize_'+str(img_size)+"_stride_"+str(stride)+'.h5')
h5f = h5py.File(h5path,
'w') 'w')
h5_ir = h5f.create_group('ir_patchs') h5_ir = h5f.create_group('ir_patchs')
h5_vis = h5f.create_group('vis_patchs') h5_vis = h5f.create_group('vis_patchs')
@ -80,8 +81,7 @@ for i in tqdm(range(len(IR_files))):
h5f.close() h5f.close()
with h5py.File(os.path.join('data', with h5py.File(h5path,"r") as f:
data_name+'_imgsize_'+str(img_size)+"_stride_"+str(stride)+'.h5'),"r") as f:
for key in f.keys(): for key in f.keys():
print(f[key], key, f[key].name) print(f[key], key, f[key].name)

271
net.py
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@ -148,8 +148,28 @@ class PoolMlp(nn.Module):
# x = x + self.drop_path(self.token_mixer(self.norm1(x))) # 匹配cddfuse # x = x + self.drop_path(self.token_mixer(self.norm1(x))) # 匹配cddfuse
# x = x + self.drop_path(self.poolmlp(self.norm2(x))) # x = x + self.drop_path(self.poolmlp(self.norm2(x)))
# return x # return x
class DetailFeatureFusion(nn.Module):
def __init__(self, num_layers=3):
super(DetailFeatureFusion, self).__init__()
INNmodules = [DetailNode(useBlock=2) for _ in range(num_layers)]
self.net = nn.Sequential(*INNmodules)
self.enhancement_module = WTConv2d(32, 32)
class BaseFeatureExtraction(nn.Module): def forward(self, x): # 1 64 128 128
z1, z2 = x[:, :x.shape[1] // 2], x[:, x.shape[1] // 2:x.shape[1]] # 1 32 128 128
# 增强并添加残差连接
enhanced_z1 = self.enhancement_module(z1)
enhanced_z2 = self.enhancement_module(z2)
for layer in self.net:
z1, z2 = layer(z1, z2)
# 残差连接
z1 = z1 + enhanced_z1
z2 = z2 + enhanced_z2
return torch.cat((z1, z2), dim=1)
class BaseFeatureFusion(nn.Module):
def __init__(self, dim, pool_size=3, mlp_ratio=4., def __init__(self, dim, pool_size=3, mlp_ratio=4.,
act_layer=nn.GELU, act_layer=nn.GELU,
# norm_layer=nn.LayerNorm, # norm_layer=nn.LayerNorm,
@ -158,7 +178,6 @@ class BaseFeatureExtraction(nn.Module):
super().__init__() super().__init__()
self.WTConv2d = WTConv2d(dim, dim)
self.norm1 = LayerNorm(dim, 'WithBias') self.norm1 = LayerNorm(dim, 'WithBias')
# self.token_mixer = SMFA(dim=dim) # self.token_mixer = SMFA(dim=dim)
self.token_mixer = SCSA(dim=dim,head_num=8) self.token_mixer = SCSA(dim=dim,head_num=8)
@ -184,7 +203,7 @@ class BaseFeatureExtraction(nn.Module):
def forward(self, x): # 1 64 128 128 def forward(self, x): # 1 64 128 128
if self.use_layer_scale: if self.use_layer_scale:
# self.layer_scale_1(64,) # self.layer_scale_1(64,)
wtConvX = self.WTConv2d(x) # wtConvX = self.WTConv2d(x)
tmp1 = self.layer_scale_1.unsqueeze(-1).unsqueeze(-1) # 64 1 1 tmp1 = self.layer_scale_1.unsqueeze(-1).unsqueeze(-1) # 64 1 1
normal = self.norm1(x) # 1 64 128 128 normal = self.norm1(x) # 1 64 128 128
@ -192,16 +211,124 @@ class BaseFeatureExtraction(nn.Module):
x = (x + x = (x +
self.drop_path( self.drop_path(tmp1 * token_mix)
tmp1 * token_mix
)
# 该表达式将 self.layer_scale_1 这个一维张量(或变量)在维度末尾添加两个新的维度,使其从一维变为三维。这通常用于使其能够与三维的特征图进行广播操作,如元素相乘。具体用途可能包括调整卷积层或注意力机制中的权重。 # 该表达式将 self.layer_scale_1 这个一维张量(或变量)在维度末尾添加两个新的维度,使其从一维变为三维。这通常用于使其能够与三维的特征图进行广播操作,如元素相乘。具体用途可能包括调整卷积层或注意力机制中的权重。
) )
pol = self.poolmlp(self.norm2(x)) # pol = self.poolmlp(self.norm2(x))
#
# x = x + self.drop_path(
# self.layer_scale_2.unsqueeze(-1).unsqueeze(-1)
# * pol)
else:
x = x + self.drop_path(self.token_mixer(self.norm1(x))) # 匹配cddfuse
x = x + self.drop_path(self.poolmlp(self.norm2(x)))
return x
x = wtConvX + self.drop_path(
self.layer_scale_2.unsqueeze(-1).unsqueeze(-1)
* pol) class BaseFeatureExtraction(nn.Module):
def __init__(self, dim, pool_size=3, mlp_ratio=4.,
act_layer=nn.GELU,
# norm_layer=nn.LayerNorm,
drop=0., drop_path=0.,
use_layer_scale=True, layer_scale_init_value=1e-5):
super().__init__()
self.norm1 = LayerNorm(dim, 'WithBias')
self.token_mixer = Pooling(kernel_size=pool_size) # vits是msaMLPs是mlp这个用pool来替代
self.norm2 = LayerNorm(dim, 'WithBias')
mlp_hidden_dim = int(dim * mlp_ratio)
self.poolmlp = PoolMlp(in_features=dim, hidden_features=mlp_hidden_dim,
act_layer=act_layer, drop=drop)
# The following two techniques are useful to train deep PoolFormers.
self.drop_path = DropPath(drop_path) if drop_path > 0. \
else nn.Identity()
self.use_layer_scale = use_layer_scale
if use_layer_scale:
self.layer_scale_1 = nn.Parameter(
torch.ones(dim, dtype=torch.float32) * layer_scale_init_value)
self.layer_scale_2 = nn.Parameter(
torch.ones(dim, dtype=torch.float32) * layer_scale_init_value)
def forward(self, x): # 1 64 128 128
if self.use_layer_scale:
# self.layer_scale_1(64,)
# wtConvX = self.WTConv2d(x)
tmp1 = self.layer_scale_1.unsqueeze(-1).unsqueeze(-1) # 64 1 1
normal = self.norm1(x) # 1 64 128 128
token_mix = self.token_mixer(normal) # 1 64 128 128
x = (x +
self.drop_path(tmp1 * token_mix)
# 该表达式将 self.layer_scale_1 这个一维张量(或变量)在维度末尾添加两个新的维度,使其从一维变为三维。这通常用于使其能够与三维的特征图进行广播操作,如元素相乘。具体用途可能包括调整卷积层或注意力机制中的权重。
)
# pol = self.poolmlp(self.norm2(x))
#
# x = x + self.drop_path(
# self.layer_scale_2.unsqueeze(-1).unsqueeze(-1)
# * pol)
else:
x = x + self.drop_path(self.token_mixer(self.norm1(x))) # 匹配cddfuse
x = x + self.drop_path(self.poolmlp(self.norm2(x)))
return x
class BaseFeatureExtractionSAR(nn.Module):
def __init__(self, dim, pool_size=3, mlp_ratio=4.,
act_layer=nn.GELU,
# norm_layer=nn.LayerNorm,
drop=0., drop_path=0.,
use_layer_scale=True, layer_scale_init_value=1e-5):
super().__init__()
self.norm1 = LayerNorm(dim, 'WithBias')
# self.token_mixer = SMFA(dim=dim)
self.token_mixer = SCSA(dim=dim,head_num=8)
# self.token_mixer = Pooling(kernel_size=pool_size) # vits是msaMLPs是mlp这个用pool来替代
# self.norm2 = LayerNorm(dim, 'WithBias')
mlp_hidden_dim = int(dim * mlp_ratio)
# self.poolmlp = PoolMlp(in_features=dim, hidden_features=mlp_hidden_dim,
# act_layer=act_layer, drop=drop)
# The following two techniques are useful to train deep PoolFormers.
self.drop_path = DropPath(drop_path) if drop_path > 0. \
else nn.Identity()
self.use_layer_scale = use_layer_scale
if use_layer_scale:
self.layer_scale_1 = nn.Parameter(
torch.ones(dim, dtype=torch.float32) * layer_scale_init_value)
self.layer_scale_2 = nn.Parameter(
torch.ones(dim, dtype=torch.float32) * layer_scale_init_value)
def forward(self, x): # 1 64 128 128
if self.use_layer_scale:
# self.layer_scale_1(64,)
# wtConvX = self.WTConv2d(x)
tmp1 = self.layer_scale_1.unsqueeze(-1).unsqueeze(-1) # 64 1 1
normal = self.norm1(x) # 1 64 128 128
token_mix = self.token_mixer(normal) # 1 64 128 128
x = (x +
self.drop_path(tmp1 * token_mix)
# 该表达式将 self.layer_scale_1 这个一维张量(或变量)在维度末尾添加两个新的维度,使其从一维变为三维。这通常用于使其能够与三维的特征图进行广播操作,如元素相乘。具体用途可能包括调整卷积层或注意力机制中的权重。
)
# pol = self.poolmlp(self.norm2(x))
#
# x = x + self.drop_path(
# self.layer_scale_2.unsqueeze(-1).unsqueeze(-1)
# * pol)
else: else:
x = x + self.drop_path(self.token_mixer(self.norm1(x))) # 匹配cddfuse x = x + self.drop_path(self.token_mixer(self.norm1(x))) # 匹配cddfuse
x = x + self.drop_path(self.poolmlp(self.norm2(x))) x = x + self.drop_path(self.poolmlp(self.norm2(x)))
@ -228,12 +355,38 @@ class InvertedResidualBlock(nn.Module):
def forward(self, x): def forward(self, x):
return self.bottleneckBlock(x) return self.bottleneckBlock(x)
class DepthwiseSeparableConvBlock(nn.Module):
def __init__(self, inp, oup, kernel_size=3, stride=1, padding=1):
super(DepthwiseSeparableConvBlock, self).__init__()
self.depthwise = nn.Conv2d(inp, inp, kernel_size, stride, padding, groups=inp, bias=False)
self.pointwise = nn.Conv2d(inp, oup, 1, bias=False)
self.bn = nn.BatchNorm2d(oup)
self.relu = nn.ReLU(inplace=True)
def forward(self, x):
x = self.depthwise(x)
x = self.pointwise(x)
x = self.bn(x)
x = self.relu(x)
return x
class DetailNode(nn.Module): class DetailNode(nn.Module):
# <img src = "http://42.192.130.83:9000/picgo/imgs/小绿鲸英文文献阅读器_ELTITYqm5G.png" / > ' # <img src = "http://42.192.130.83:9000/picgo/imgs/小绿鲸英文文献阅读器_ELTITYqm5G.png" / > '
def __init__(self): def __init__(self,useBlock=0):
super(DetailNode, self).__init__() super(DetailNode, self).__init__()
if useBlock==0:
self.theta_phi = DepthwiseSeparableConvBlock(inp=32, oup=32)
self.theta_rho = DepthwiseSeparableConvBlock(inp=32, oup=32)
self.theta_eta = DepthwiseSeparableConvBlock(inp=32, oup=32)
elif useBlock==1:
self.theta_phi = InvertedResidualBlock(inp=32, oup=32, expand_ratio=2)
self.theta_rho = InvertedResidualBlock(inp=32, oup=32, expand_ratio=2)
self.theta_eta = InvertedResidualBlock(inp=32, oup=32, expand_ratio=2)
else:
self.theta_phi = InvertedResidualBlock(inp=32, oup=32, expand_ratio=2) self.theta_phi = InvertedResidualBlock(inp=32, oup=32, expand_ratio=2)
self.theta_rho = InvertedResidualBlock(inp=32, oup=32, expand_ratio=2) self.theta_rho = InvertedResidualBlock(inp=32, oup=32, expand_ratio=2)
self.theta_eta = InvertedResidualBlock(inp=32, oup=32, expand_ratio=2) self.theta_eta = InvertedResidualBlock(inp=32, oup=32, expand_ratio=2)
@ -251,26 +404,29 @@ class DetailNode(nn.Module):
z1 = z1 * torch.exp(self.theta_rho(z2)) + self.theta_eta(z2) z1 = z1 * torch.exp(self.theta_rho(z2)) + self.theta_eta(z2)
return z1, z2 return z1, z2
class DetailFeatureExtractionSAR(nn.Module):
def __init__(self, num_layers=3):
super(DetailFeatureExtractionSAR, self).__init__()
# useBlock = 1表示使用 invresblock
INNmodules = [DetailNode(useBlock=1) for _ in range(num_layers)]
self.net = nn.Sequential(*INNmodules)
def forward(self, x):
z1, z2 = x[:, :x.shape[1] // 2], x[:, x.shape[1] // 2:x.shape[1]]
for layer in self.net:
z1, z2 = layer(z1, z2)
return torch.cat((z1, z2), dim=1)
class DetailFeatureExtraction(nn.Module): class DetailFeatureExtraction(nn.Module):
def __init__(self, num_layers=3): def __init__(self, num_layers=3):
super(DetailFeatureExtraction, self).__init__() super(DetailFeatureExtraction, self).__init__()
INNmodules = [DetailNode() for _ in range(num_layers)] INNmodules = [DetailNode(useBlock=0) for _ in range(num_layers)]
self.net = nn.Sequential(*INNmodules) self.net = nn.Sequential(*INNmodules)
self.enhancement_module = WTConv2d(32, 32)
def forward(self, x): # 1 64 128 128
z1, z2 = x[:, :x.shape[1] // 2], x[:, x.shape[1] // 2:x.shape[1]] # 1 32 128 128
# 增强并添加残差连接
enhanced_z1 = self.enhancement_module(z1)
enhanced_z2 = self.enhancement_module(z2)
def forward(self, x):
z1, z2 = x[:, :x.shape[1] // 2], x[:, x.shape[1] // 2:x.shape[1]]
for layer in self.net: for layer in self.net:
z1, z2 = layer(z1, z2) z1, z2 = layer(z1, z2)
# 残差连接
z1 = z1 + enhanced_z1
z2 = z2 + enhanced_z2
return torch.cat((z1, z2), dim=1) return torch.cat((z1, z2), dim=1)
# ============================================================================= # =============================================================================
@ -435,78 +591,9 @@ class OverlapPatchEmbed(nn.Module):
return x return x
class BaseFeatureExtractionSAR(nn.Module):
def __init__(self, dim, pool_size=3, mlp_ratio=4.,
act_layer=nn.GELU,
# norm_layer=nn.LayerNorm,
drop=0., drop_path=0.,
use_layer_scale=True, layer_scale_init_value=1e-5):
super().__init__()
self.WTConv2d = WTConv2d(dim, dim)
self.norm1 = LayerNorm(dim, 'WithBias')
self.token_mixer = Pooling(kernel_size=pool_size) # vits是msaMLPs是mlp这个用pool来替代
self.norm2 = LayerNorm(dim, 'WithBias')
mlp_hidden_dim = int(dim * mlp_ratio)
self.poolmlp = PoolMlp(in_features=dim, hidden_features=mlp_hidden_dim,
act_layer=act_layer, drop=drop)
# The following two techniques are useful to train deep PoolFormers.
self.drop_path = DropPath(drop_path) if drop_path > 0. \
else nn.Identity()
self.use_layer_scale = use_layer_scale
if use_layer_scale:
self.layer_scale_1 = nn.Parameter(
torch.ones(dim, dtype=torch.float32) * layer_scale_init_value)
self.layer_scale_2 = nn.Parameter(
torch.ones(dim, dtype=torch.float32) * layer_scale_init_value)
def forward(self, x): # 1 64 128 128
if self.use_layer_scale:
# self.layer_scale_1(64,)
tmp1 = self.layer_scale_1.unsqueeze(-1).unsqueeze(-1) # 64 1 1
normal = self.norm1(x) # 1 64 128 128
token_mix = self.token_mixer(normal) # 1 64 128 128
x = self.WTConv2d(x)
x = (x +
self.drop_path(
tmp1 * token_mix
)
# 该表达式将 self.layer_scale_1 这个一维张量(或变量)在维度末尾添加两个新的维度,使其从一维变为三维。这通常用于使其能够与三维的特征图进行广播操作,如元素相乘。具体用途可能包括调整卷积层或注意力机制中的权重。
)
x = x + self.drop_path(
self.layer_scale_2.unsqueeze(-1).unsqueeze(-1)
* self.poolmlp(self.norm2(x)))
else:
x = x + self.drop_path(self.token_mixer(self.norm1(x))) # 匹配cddfuse
x = x + self.drop_path(self.poolmlp(self.norm2(x)))
return x
class DetailFeatureExtractionSAR(nn.Module):
def __init__(self, num_layers=3):
super(DetailFeatureExtractionSAR, self).__init__()
INNmodules = [DetailNode() for _ in range(num_layers)]
self.net = nn.Sequential(*INNmodules)
self.enhancement_module = WTConv2d(32, 32)
def forward(self, x): # 1 64 128 128
z1, z2 = x[:, :x.shape[1] // 2], x[:, x.shape[1] // 2:x.shape[1]] # 1 32 128 128
# 增强并添加残差连接
enhanced_z1 = self.enhancement_module(z1)
enhanced_z2 = self.enhancement_module(z2)
# 残差连接
z1 = z1 + enhanced_z1
z2 = z2 + enhanced_z2
for layer in self.net:
z1, z2 = layer(z1, z2)
return torch.cat((z1, z2), dim=1)

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@ -17,9 +17,9 @@ current_time = datetime.datetime.now().strftime("%Y%m%d_%H%M%S")
os.environ["CUDA_VISIBLE_DEVICES"] = "0" os.environ["CUDA_VISIBLE_DEVICES"] = "0"
ckpt_path= r"/home/star/whaiDir/PFCFuse/models/whaiFusion10-08-16-20.pth" ckpt_path= r"/home/star/whaiDir/PFCFuse/models/whaiFusion11-11-20-36.pth"
for dataset_name in ["TNO","RoadScene"]: for dataset_name in ["sar"]:
print("\n"*2+"="*80) print("\n"*2+"="*80)
model_name="PFCFuse " model_name="PFCFuse "
print("The test result of "+dataset_name+' :') print("The test result of "+dataset_name+' :')

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@ -6,7 +6,8 @@ Import packages
------------------------------------------------------------------------------ ------------------------------------------------------------------------------
''' '''
from net import Restormer_Encoder, Restormer_Decoder, BaseFeatureExtraction, DetailFeatureExtraction from net import Restormer_Encoder, Restormer_Decoder, BaseFeatureExtraction, DetailFeatureExtraction, BaseFeatureFusion, \
DetailFeatureFusion
from utils.dataset import H5Dataset from utils.dataset import H5Dataset
import os import os
os.environ['KMP_DUPLICATE_LIB_OK'] = 'True' os.environ['KMP_DUPLICATE_LIB_OK'] = 'True'
@ -31,11 +32,11 @@ Configure our network
os.environ['CUDA_VISIBLE_DEVICES'] = '0' os.environ['CUDA_VISIBLE_DEVICES'] = '0'
criteria_fusion = Fusionloss() criteria_fusion = Fusionloss()
model_str = 'PFCFuse' model_str = 'WhaiFuse'
# . Set the hyper-parameters for training # . Set the hyper-parameters for training
num_epochs = 60 # total epoch num_epochs = 120 # total epoch
epoch_gap = 40 # epoches of Phase I epoch_gap = 80 # epoches of Phase I
lr = 1e-4 lr = 1e-4
weight_decay = 0 weight_decay = 0
@ -85,8 +86,8 @@ device = 'cuda' if torch.cuda.is_available() else 'cpu'
DIDF_Encoder = nn.DataParallel(Restormer_Encoder()).to(device) DIDF_Encoder = nn.DataParallel(Restormer_Encoder()).to(device)
DIDF_Decoder = nn.DataParallel(Restormer_Decoder()).to(device) DIDF_Decoder = nn.DataParallel(Restormer_Decoder()).to(device)
# BaseFuseLayer = nn.DataParallel(BaseFeatureExtraction(dim=64, num_heads=8)).to(device) # BaseFuseLayer = nn.DataParallel(BaseFeatureExtraction(dim=64, num_heads=8)).to(device)
BaseFuseLayer = nn.DataParallel(BaseFeatureExtraction(dim=64)).to(device) BaseFuseLayer = nn.DataParallel(BaseFeatureFusion(dim=64)).to(device)
DetailFuseLayer = nn.DataParallel(DetailFeatureExtraction(num_layers=1)).to(device) DetailFuseLayer = nn.DataParallel(DetailFeatureFusion(num_layers=1)).to(device)
# optimizer, scheduler and loss function # optimizer, scheduler and loss function
optimizer1 = torch.optim.Adam( optimizer1 = torch.optim.Adam(
@ -109,7 +110,7 @@ Loss_ssim = kornia.losses.SSIM(11, reduction='mean')
HuberLoss = nn.HuberLoss() HuberLoss = nn.HuberLoss()
# data loader # data loader
trainloader = DataLoader(H5Dataset(r"/home/star/whaiDir/CDDFuse/data/MSRS_train_imgsize_128_stride_200.h5"), trainloader = DataLoader(H5Dataset(r"/home/star/whaiDir/PFCFuse/data/YYX_sar_opr_data_imgsize_128_stride_200.h5"),
batch_size=batch_size, batch_size=batch_size,
shuffle=True, shuffle=True,
num_workers=0) num_workers=0)
@ -156,6 +157,7 @@ for epoch in range(num_epochs):
cc_loss_B = cc(feature_V_B, feature_I_B) cc_loss_B = cc(feature_V_B, feature_I_B)
cc_loss_D = cc(feature_V_D, feature_I_D) cc_loss_D = cc(feature_V_D, feature_I_D)
# HuberLoss 对比CDDFUSE的MSELoss
mse_loss_V = 5 * Loss_ssim(data_VIS, data_VIS_hat) + HuberLoss(data_VIS, data_VIS_hat) mse_loss_V = 5 * Loss_ssim(data_VIS, data_VIS_hat) + HuberLoss(data_VIS, data_VIS_hat)
mse_loss_I = 5 * Loss_ssim(data_IR, data_IR_hat) + HuberLoss(data_IR, data_IR_hat) mse_loss_I = 5 * Loss_ssim(data_IR, data_IR_hat) + HuberLoss(data_IR, data_IR_hat)
@ -169,6 +171,16 @@ for epoch in range(num_epochs):
loss_decomp = (cc_loss_D) ** 2/ (1.01 + cc_loss_B) loss_decomp = (cc_loss_D) ** 2/ (1.01 + cc_loss_B)
# print("loss_decomp", loss_decomp) # print("loss_decomp", loss_decomp)
"""
-Huber 损失函数是一种鲁棒的回归损失函数
结合了均方误差MSE和绝对误差MAE的优点
其设计目的是为了减少在数据中出现异常值outliers时对模型训练的影响
在传统的 MSE 损失函数中对大的误差给予较大的惩罚
MAE 则对所有误差给予同等的线性惩罚
然而MSE 在面对异常值时可能导致模型的不稳定
MAE 则可能导致梯度消失的问题
a-Huber 损失函数通过一个阈值 δ 来自适应地选择惩罚方式
"""
loss_rmi_v = relative_diff_loss(data_VIS, data_VIS_hat) loss_rmi_v = relative_diff_loss(data_VIS, data_VIS_hat)
loss_rmi_i = relative_diff_loss(data_IR, data_IR_hat) loss_rmi_i = relative_diff_loss(data_IR, data_IR_hat)