FinalVision / models /model.py
phoebehxf
fix bug
bc63015
import torch
import torch.nn as nn
import torch.nn.functional as F
import os
import clip
import sys
import numpy as np
from models.seg_post_model.cellpose.models import CellposeModel
from torchvision.ops import roi_align
def crop_roi_feat(feat, boxes):
"""
feat: 1 x c x h x w
boxes: m x 4, 4: [y_tl, x_tl, y_br, x_br]
"""
_, _, h, w = feat.shape
out_stride = 512 / h
boxes_scaled = boxes / out_stride
boxes_scaled[:, :2] = torch.floor(boxes_scaled[:, :2]) # y_tl, x_tl: floor
boxes_scaled[:, 2:] = torch.ceil(boxes_scaled[:, 2:]) # y_br, x_br: ceil
boxes_scaled[:, :2] = torch.clamp_min(boxes_scaled[:, :2], 0)
boxes_scaled[:, 2] = torch.clamp_max(boxes_scaled[:, 2], h)
boxes_scaled[:, 3] = torch.clamp_max(boxes_scaled[:, 3], w)
feat_boxes = []
for idx_box in range(0, boxes.shape[0]):
y_tl, x_tl, y_br, x_br = boxes_scaled[idx_box]
y_tl, x_tl, y_br, x_br = int(y_tl), int(x_tl), int(y_br), int(x_br)
feat_box = feat[:, :, y_tl : (y_br + 1), x_tl : (x_br + 1)]
feat_boxes.append(feat_box)
return feat_boxes
class Counting_with_SD_features(nn.Module):
def __init__(self, scale_factor):
super(Counting_with_SD_features, self).__init__()
self.adapter = adapter_roi()
# self.regressor = regressor_with_SD_features()
class Counting_with_SD_features_loca(nn.Module):
def __init__(self, scale_factor):
super(Counting_with_SD_features_loca, self).__init__()
self.adapter = adapter_roi_loca()
self.regressor = regressor_with_SD_features()
class Counting_with_SD_features_dino_vit_c3(nn.Module):
def __init__(self, scale_factor, vit=None):
super(Counting_with_SD_features_dino_vit_c3, self).__init__()
self.adapter = adapter_roi_loca()
self.regressor = regressor_with_SD_features_seg_vit_c3()
class Counting_with_SD_features_track(nn.Module):
def __init__(self, scale_factor, vit=None):
super(Counting_with_SD_features_track, self).__init__()
self.adapter = adapter_roi_loca()
self.regressor = regressor_with_SD_features_tra()
class adapter_roi(nn.Module):
def __init__(self, pool_size=[3, 3]):
super(adapter_roi, self).__init__()
self.pool_size = pool_size
self.conv1 = nn.Conv2d(256, 256, kernel_size=3, padding=1)
# self.relu = nn.ReLU()
# self.conv2 = nn.Conv2d(256, 256, kernel_size=3, padding=1)
self.pool = nn.MaxPool2d(2)
self.fc = nn.Linear(256 * 3 * 3, 768)
# **new
self.fc1 = nn.Sequential(
nn.ReLU(),
nn.Linear(768, 768 // 4, bias=False),
nn.ReLU()
)
self.fc2 = nn.Sequential(
nn.Linear(768 // 4, 768, bias=False),
# nn.ReLU()
)
self.initialize_weights()
def forward(self, x, boxes):
num_of_boxes = boxes.shape[1]
rois = []
bs, _, h, w = x.shape
boxes = torch.cat([
torch.arange(
bs, requires_grad=False
).to(boxes.device).repeat_interleave(num_of_boxes).reshape(-1, 1),
boxes.flatten(0, 1),
], dim=1)
rois = roi_align(
x,
boxes=boxes, output_size=3,
spatial_scale=1.0 / 8, aligned=True
)
rois = torch.mean(rois, dim=0, keepdim=True)
x = self.conv1(rois)
x = x.view(x.size(0), -1)
x = self.fc(x)
x = self.fc1(x)
x = self.fc2(x)
return x
def initialize_weights(self):
for m in self.modules():
if isinstance(m, nn.Conv2d) or isinstance(m, nn.Linear):
nn.init.xavier_normal_(m.weight)
if m.bias is not None:
nn.init.constant_(m.bias, 0)
class adapter_roi_loca(nn.Module):
def __init__(self, pool_size=[3, 3]):
super(adapter_roi_loca, self).__init__()
self.pool_size = pool_size
self.conv1 = nn.Conv2d(256, 256, kernel_size=3, padding=1)
self.pool = nn.MaxPool2d(2)
self.fc = nn.Linear(256 * 3 * 3, 768)
self.initialize_weights()
def forward(self, x, boxes):
num_of_boxes = boxes.shape[1]
rois = []
bs, _, h, w = x.shape
if h != 512 or w != 512:
x = F.interpolate(x, size=(512, 512), mode='bilinear', align_corners=False)
if bs == 1:
boxes = torch.cat([
torch.arange(
bs, requires_grad=False
).to(boxes.device).repeat_interleave(num_of_boxes).reshape(-1, 1),
boxes.flatten(0, 1),
], dim=1)
rois = roi_align(
x,
boxes=boxes, output_size=3,
spatial_scale=1.0 / 8, aligned=True
)
rois = torch.mean(rois, dim=0, keepdim=True)
else:
boxes = torch.cat([
boxes.flatten(0, 1),
], dim=1).split(num_of_boxes, dim=0)
rois = roi_align(
x,
boxes=boxes, output_size=3,
spatial_scale=1.0 / 8, aligned=True
)
rois = rois.split(num_of_boxes, dim=0)
rois = torch.stack(rois, dim=0)
rois = torch.mean(rois, dim=1, keepdim=False)
x = self.conv1(rois)
x = x.view(x.size(0), -1)
x = self.fc(x)
return x
def forward_boxes(self, x, boxes):
num_of_boxes = boxes.shape[1]
rois = []
bs, _, h, w = x.shape
if h != 512 or w != 512:
x = F.interpolate(x, size=(512, 512), mode='bilinear', align_corners=False)
if bs == 1:
boxes = torch.cat([
torch.arange(
bs, requires_grad=False
).to(boxes.device).repeat_interleave(num_of_boxes).reshape(-1, 1),
boxes.flatten(0, 1),
], dim=1)
rois = roi_align(
x,
boxes=boxes, output_size=3,
spatial_scale=1.0 / 8, aligned=True
)
# rois = torch.mean(rois, dim=0, keepdim=True)
else:
raise NotImplementedError
x = self.conv1(rois)
x = x.view(x.size(0), -1)
x = self.fc(x)
return x
def initialize_weights(self):
for m in self.modules():
if isinstance(m, nn.Conv2d) or isinstance(m, nn.Linear):
nn.init.xavier_normal_(m.weight)
if m.bias is not None:
nn.init.constant_(m.bias, 0)
class regressor1(nn.Module):
def __init__(self):
super(regressor1, self).__init__()
self.conv1 = nn.Conv2d(4, 4, kernel_size=3, stride=1, padding=1)
self.conv2 = nn.Conv2d(4, 4, kernel_size=3, stride=1, padding=1)
self.conv3 = nn.Conv2d(4, 1, kernel_size=3, stride=1, padding=1)
self.upsampler = nn.UpsamplingBilinear2d(scale_factor=2)
self.leaky_relu = nn.LeakyReLU()
self.relu = nn.ReLU()
self.initialize_weights()
def forward(self, x):
x_ = self.conv1(x)
x_ = self.leaky_relu(x_)
x_ = self.upsampler(x_)
x_ = self.conv2(x_)
x_ = self.leaky_relu(x_)
x_ = self.upsampler(x_)
x_ = self.conv3(x_)
x_ = self.relu(x_)
out = x_
return out
def initialize_weights(self):
for m in self.modules():
if isinstance(m, nn.Conv2d) or isinstance(m, nn.Linear):
nn.init.xavier_normal_(m.weight)
if m.bias is not None:
nn.init.constant_(m.bias, 0)
class regressor1(nn.Module):
def __init__(self):
super(regressor1, self).__init__()
self.conv1 = nn.Conv2d(4, 4, kernel_size=3, stride=1, padding=1)
self.conv2 = nn.Conv2d(4, 4, kernel_size=3, stride=1, padding=1)
self.conv3 = nn.Conv2d(4, 1, kernel_size=3, stride=1, padding=1)
self.upsampler = nn.UpsamplingBilinear2d(scale_factor=2)
self.leaky_relu = nn.LeakyReLU()
self.relu = nn.ReLU()
def forward(self, x):
x_ = self.conv1(x)
x_ = self.leaky_relu(x_)
x_ = self.upsampler(x_)
x_ = self.conv2(x_)
x_ = self.leaky_relu(x_)
x_ = self.upsampler(x_)
x_ = self.conv3(x_)
x_ = self.relu(x_)
out = x_
return out
def initialize_weights(self):
for m in self.modules():
if isinstance(m, nn.Conv2d) or isinstance(m, nn.Linear):
nn.init.xavier_normal_(m.weight)
if m.bias is not None:
nn.init.constant_(m.bias, 0)
class regressor_with_SD_features(nn.Module):
def __init__(self):
super(regressor_with_SD_features, self).__init__()
self.layer1 = nn.Sequential(
nn.Conv2d(324, 256, kernel_size=1, stride=1),
nn.LeakyReLU(),
nn.LayerNorm((64, 64))
)
self.layer2 = nn.Sequential(
nn.Conv2d(256, 128, kernel_size=3, padding=1),
nn.LeakyReLU(),
nn.ConvTranspose2d(in_channels=128, out_channels=128, kernel_size=4, stride=2, padding=1),
)
self.layer3 = nn.Sequential(
nn.Conv2d(128, 64, kernel_size=3, padding=1),
nn.ReLU(),
nn.ConvTranspose2d(in_channels=64, out_channels=64, kernel_size=4, stride=2, padding=1),
)
self.layer4 = nn.Sequential(
nn.Conv2d(64, 32, kernel_size=3, padding=1),
nn.LeakyReLU(),
nn.ConvTranspose2d(in_channels=32, out_channels=32, kernel_size=4, stride=2, padding=1),
)
self.conv = nn.Sequential(
nn.Conv2d(32, 1, kernel_size=1),
nn.ReLU()
)
self.norm = nn.LayerNorm(normalized_shape=(64, 64))
self.initialize_weights()
def forward(self, attn_stack, feature_list):
attn_stack = self.norm(attn_stack)
unet_feature = feature_list[-1]
attn_stack_mean = torch.mean(attn_stack, dim=1, keepdim=True)
unet_feature = unet_feature * attn_stack_mean
unet_feature = torch.cat([unet_feature, attn_stack], dim=1) # [1, 324, 64, 64]
x = self.layer1(unet_feature)
x = self.layer2(x)
x = self.layer3(x)
x = self.layer4(x)
out = self.conv(x)
return out / 100
def initialize_weights(self):
for m in self.modules():
if isinstance(m, nn.Conv2d) or isinstance(m, nn.Linear):
nn.init.xavier_normal_(m.weight)
if m.bias is not None:
nn.init.constant_(m.bias, 0)
class regressor_with_SD_features_seg(nn.Module):
def __init__(self):
super(regressor_with_SD_features_seg, self).__init__()
self.layer1 = nn.Sequential(
nn.Conv2d(324, 256, kernel_size=1, stride=1),
nn.LeakyReLU(),
nn.LayerNorm((64, 64))
)
self.layer2 = nn.Sequential(
nn.Conv2d(256, 128, kernel_size=3, padding=1),
nn.LeakyReLU(),
nn.ConvTranspose2d(in_channels=128, out_channels=128, kernel_size=4, stride=2, padding=1),
)
self.layer3 = nn.Sequential(
nn.Conv2d(128, 64, kernel_size=3, padding=1),
nn.ReLU(),
nn.ConvTranspose2d(in_channels=64, out_channels=64, kernel_size=4, stride=2, padding=1),
)
self.layer4 = nn.Sequential(
nn.Conv2d(64, 32, kernel_size=3, padding=1),
nn.LeakyReLU(),
nn.ConvTranspose2d(in_channels=32, out_channels=32, kernel_size=4, stride=2, padding=1),
)
self.conv = nn.Sequential(
nn.Conv2d(32, 2, kernel_size=1),
# nn.ReLU()
)
self.norm = nn.LayerNorm(normalized_shape=(64, 64))
self.initialize_weights()
def forward(self, attn_stack, feature_list):
attn_stack = self.norm(attn_stack)
unet_feature = feature_list[-1]
attn_stack_mean = torch.mean(attn_stack, dim=1, keepdim=True)
unet_feature = unet_feature * attn_stack_mean
unet_feature = torch.cat([unet_feature, attn_stack], dim=1) # [1, 324, 64, 64]
x = self.layer1(unet_feature)
x = self.layer2(x)
x = self.layer3(x)
x = self.layer4(x)
out = self.conv(x)
return out
def initialize_weights(self):
for m in self.modules():
if isinstance(m, nn.Conv2d) or isinstance(m, nn.Linear):
nn.init.xavier_normal_(m.weight)
if m.bias is not None:
nn.init.constant_(m.bias, 0)
from models.enc_model.unet_parts import *
class regressor_with_SD_features_seg_vit_c3(nn.Module):
def __init__(self, n_channels=3, n_classes=2, bilinear=False):
super(regressor_with_SD_features_seg_vit_c3, self).__init__()
self.n_channels = n_channels
self.n_classes = n_classes
self.bilinear = bilinear
self.norm = nn.LayerNorm(normalized_shape=(64, 64))
self.inc_0 = nn.Conv2d(n_channels, 3, kernel_size=3, padding=1)
self.vit_model = CellposeModel(gpu=True, nchan=3, pretrained_model="", use_bfloat16=False)
self.vit = self.vit_model.net
def forward(self, img, attn_stack, feature_list):
attn_stack = attn_stack[:, [1,3], ...]
attn_stack = self.norm(attn_stack)
unet_feature = feature_list[-1]
unet_feature_mean = torch.mean(unet_feature, dim=1, keepdim=True)
x = torch.cat([unet_feature_mean, attn_stack], dim=1) # [1, 324, 64, 64]
if x.shape[-1] != 512:
x = F.interpolate(x, size=(512, 512), mode="bilinear")
x = self.inc_0(x)
out = self.vit_model.eval(img.squeeze().cpu().numpy(), feat=x.squeeze().cpu().numpy())[0]
if out.dtype == np.uint16:
out = out.astype(np.int16)
out = torch.from_numpy(out).unsqueeze(0).to(x.device)
return out
def initialize_weights(self):
for m in self.modules():
if isinstance(m, nn.Conv2d) or isinstance(m, nn.Linear):
nn.init.xavier_normal_(m.weight)
if m.bias is not None:
nn.init.constant_(m.bias, 0)
class regressor_with_SD_features_tra(nn.Module):
def __init__(self, n_channels=2, n_classes=2, bilinear=False):
super(regressor_with_SD_features_tra, self).__init__()
self.n_channels = n_channels
self.n_classes = n_classes
self.bilinear = bilinear
self.norm = nn.LayerNorm(normalized_shape=(64, 64))
# segmentation
self.inc_0 = nn.Conv2d(3, 3, kernel_size=3, padding=1)
self.vit_model = CellposeModel(gpu=True, nchan=3, pretrained_model="", use_bfloat16=False)
self.vit = self.vit_model.net
self.inc_1 = nn.Conv2d(n_channels, 1, kernel_size=3, padding=1)
self.mlp = nn.Linear(64 * 64, 320)
# self.vit = self.vit_model.net.float()
def forward_seg(self, img, attn_stack, feature_list, mask, training=False):
attn_stack = attn_stack[:, [1,3], ...]
attn_stack = self.norm(attn_stack)
unet_feature = feature_list[-1]
unet_feature_mean = torch.mean(unet_feature, dim=1, keepdim=True)
x = torch.cat([unet_feature_mean, attn_stack], dim=1) # [1, 324, 64, 64]
if x.shape[-1] != 512:
x = F.interpolate(x, size=(512, 512), mode="bilinear")
x = self.inc_0(x)
feat = x
out = self.vit_model.eval(img.squeeze().cpu().numpy(), feat=x.squeeze().cpu().numpy())[0]
if out.dtype == np.uint16:
out = out.astype(np.int16)
out = torch.from_numpy(out).unsqueeze(0).to(x.device)
return out, 0., feat
def forward(self, attn_prev, feature_list_prev, attn_after, feature_list_after):
assert attn_prev.shape == attn_after.shape, "attn_prev and attn_after must have the same shape"
n_instances = attn_prev.shape[0]
attn_prev = self.norm(attn_prev) # [n_instances, 1, 64, 64]
attn_after = self.norm(attn_after)
x = torch.cat([attn_prev, attn_after], dim=1) # n_instances, 2, 64, 64
x = self.inc_1(x)
x = x.view(1, n_instances, -1) # Flatten the tensor to [n_instances, 64*64*4]
x = self.mlp(x) # Apply the MLP to get the output
return x # Output shape will be [n_instances, 4]
def initialize_weights(self):
for m in self.modules():
if isinstance(m, nn.Conv2d) or isinstance(m, nn.Linear):
nn.init.xavier_normal_(m.weight)
if m.bias is not None:
nn.init.constant_(m.bias, 0)
class regressor_with_SD_features_inst_seg_unet(nn.Module):
def __init__(self, n_channels=8, n_classes=3, bilinear=False):
super(regressor_with_SD_features_inst_seg_unet, self).__init__()
self.n_channels = n_channels
self.n_classes = n_classes
self.bilinear = bilinear
self.norm = nn.LayerNorm(normalized_shape=(64, 64))
self.inc_0 = (DoubleConv(n_channels, 3))
self.inc = (DoubleConv(3, 64))
self.down1 = (Down(64, 128))
self.down2 = (Down(128, 256))
self.down3 = (Down(256, 512))
factor = 2 if bilinear else 1
self.down4 = (Down(512, 1024 // factor))
self.up1 = (Up(1024, 512 // factor, bilinear))
self.up2 = (Up(512, 256 // factor, bilinear))
self.up3 = (Up(256, 128 // factor, bilinear))
self.up4 = (Up(128, 64, bilinear))
self.outc = (OutConv(64, n_classes))
def forward(self, img, attn_stack, feature_list):
attn_stack = self.norm(attn_stack)
unet_feature = feature_list[-1]
unet_feature_mean = torch.mean(unet_feature, dim=1, keepdim=True)
attn_stack_mean = torch.mean(attn_stack, dim=1, keepdim=True)
unet_feature_mean = unet_feature_mean * attn_stack_mean
x = torch.cat([unet_feature_mean, attn_stack], dim=1) # [1, 324, 64, 64]
if x.shape[-1] != 512:
x = F.interpolate(x, size=(512, 512), mode="bilinear")
x = torch.cat([img, x], dim=1) # [1, 8, 512, 512]
x = self.inc_0(x)
x1 = self.inc(x)
x2 = self.down1(x1)
x3 = self.down2(x2)
x4 = self.down3(x3)
x5 = self.down4(x4)
x = self.up1(x5, x4)
x = self.up2(x, x3)
x = self.up3(x, x2)
x = self.up4(x, x1)
out = self.outc(x)
return out
def initialize_weights(self):
for m in self.modules():
if isinstance(m, nn.Conv2d) or isinstance(m, nn.Linear):
nn.init.xavier_normal_(m.weight)
if m.bias is not None:
nn.init.constant_(m.bias, 0)
class regressor_with_SD_features_self(nn.Module):
def __init__(self):
super(regressor_with_SD_features_self, self).__init__()
self.layer = nn.Sequential(
nn.Conv2d(4096, 1024, kernel_size=1, stride=1),
nn.LeakyReLU(),
nn.LayerNorm((64, 64)),
nn.Conv2d(1024, 256, kernel_size=1, stride=1),
nn.LeakyReLU(),
nn.LayerNorm((64, 64)),
)
self.layer2 = nn.Sequential(
nn.Conv2d(256, 128, kernel_size=3, padding=1),
nn.LeakyReLU(),
nn.ConvTranspose2d(in_channels=128, out_channels=128, kernel_size=4, stride=2, padding=1),
)
self.layer3 = nn.Sequential(
nn.Conv2d(128, 64, kernel_size=3, padding=1),
nn.ReLU(),
nn.ConvTranspose2d(in_channels=64, out_channels=64, kernel_size=4, stride=2, padding=1),
)
self.layer4 = nn.Sequential(
nn.Conv2d(64, 32, kernel_size=3, padding=1),
nn.LeakyReLU(),
nn.ConvTranspose2d(in_channels=32, out_channels=32, kernel_size=4, stride=2, padding=1),
)
self.conv = nn.Sequential(
nn.Conv2d(32, 1, kernel_size=1),
nn.ReLU()
)
self.norm = nn.LayerNorm(normalized_shape=(64, 64))
self.initialize_weights()
def forward(self, self_attn):
self_attn = self_attn.permute(2, 0, 1)
self_attn = self.layer(self_attn)
return self_attn
# attn_stack = self.norm(attn_stack)
# unet_feature = feature_list[-1]
# attn_stack_mean = torch.mean(attn_stack, dim=1, keepdim=True)
# unet_feature = unet_feature * attn_stack_mean
# unet_feature = torch.cat([unet_feature, attn_stack], dim=1) # [1, 324, 64, 64]
# x = self.layer(unet_feature)
# x = self.layer2(x)
# x = self.layer3(x)
# x = self.layer4(x)
# out = self.conv(x)
# return out / 100
def initialize_weights(self):
for m in self.modules():
if isinstance(m, nn.Conv2d) or isinstance(m, nn.Linear):
nn.init.xavier_normal_(m.weight)
if m.bias is not None:
nn.init.constant_(m.bias, 0)
class regressor_with_SD_features_latent(nn.Module):
def __init__(self):
super(regressor_with_SD_features_latent, self).__init__()
self.layer = nn.Sequential(
nn.Conv2d(4, 256, kernel_size=1, stride=1),
nn.LeakyReLU(),
nn.LayerNorm((64, 64))
)
self.layer2 = nn.Sequential(
nn.Conv2d(256, 128, kernel_size=3, padding=1),
nn.LeakyReLU(),
nn.ConvTranspose2d(in_channels=128, out_channels=128, kernel_size=4, stride=2, padding=1),
)
self.layer3 = nn.Sequential(
nn.Conv2d(128, 64, kernel_size=3, padding=1),
nn.ReLU(),
nn.ConvTranspose2d(in_channels=64, out_channels=64, kernel_size=4, stride=2, padding=1),
)
self.layer4 = nn.Sequential(
nn.Conv2d(64, 32, kernel_size=3, padding=1),
nn.LeakyReLU(),
nn.ConvTranspose2d(in_channels=32, out_channels=32, kernel_size=4, stride=2, padding=1),
)
self.conv = nn.Sequential(
nn.Conv2d(32, 1, kernel_size=1),
nn.ReLU()
)
self.norm = nn.LayerNorm(normalized_shape=(64, 64))
self.initialize_weights()
def forward(self, self_attn):
# self_attn = self_attn.permute(2, 0, 1)
self_attn = self.layer(self_attn)
return self_attn
# attn_stack = self.norm(attn_stack)
# unet_feature = feature_list[-1]
# attn_stack_mean = torch.mean(attn_stack, dim=1, keepdim=True)
# unet_feature = unet_feature * attn_stack_mean
# unet_feature = torch.cat([unet_feature, attn_stack], dim=1) # [1, 324, 64, 64]
# x = self.layer(unet_feature)
# x = self.layer2(x)
# x = self.layer3(x)
# x = self.layer4(x)
# out = self.conv(x)
# return out / 100
def initialize_weights(self):
for m in self.modules():
if isinstance(m, nn.Conv2d) or isinstance(m, nn.Linear):
nn.init.xavier_normal_(m.weight)
if m.bias is not None:
nn.init.constant_(m.bias, 0)
class regressor_with_deconv(nn.Module):
def __init__(self):
super(regressor_with_deconv, self).__init__()
self.conv1 = nn.Conv2d(4, 4, kernel_size=3, stride=1, padding=1)
self.conv2 = nn.Conv2d(4, 4, kernel_size=3, stride=1, padding=1)
self.conv3 = nn.Conv2d(4, 1, kernel_size=3, stride=1, padding=1)
self.deconv1 = nn.ConvTranspose2d(4, 4, kernel_size=4, stride=2, padding=1)
self.deconv2 = nn.ConvTranspose2d(4, 4, kernel_size=4, stride=2, padding=1)
self.leaky_relu = nn.LeakyReLU()
self.relu = nn.ReLU()
self.initialize_weights()
def forward(self, x):
x_ = self.conv1(x)
x_ = self.leaky_relu(x_)
x_ = self.deconv1(x_)
x_ = self.conv2(x_)
x_ = self.leaky_relu(x_)
x_ = self.deconv2(x_)
x_ = self.conv3(x_)
x_ = self.relu(x_)
out = x_
return out
def initialize_weights(self):
for m in self.modules():
if isinstance(m, nn.Conv2d) or isinstance(m, nn.ConvTranspose2d) or isinstance(m, nn.Linear):
nn.init.xavier_normal_(m.weight)
if m.bias is not None:
nn.init.constant_(m.bias, 0)