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ltt :调通了deeplab, 修改了backbone/mobilenet中的问题,添加了输入batch处理,待完成train,test…
…,evaluate模块
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*.pyc | ||
*.pth | ||
/__pycache__ |
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# -BUAA_FRB_- | ||
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这里是由阳神带领的冯如小队,完毕! | ||
# FRB_lttprivate | ||
save code of myself |
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import math | ||
import torch | ||
import torch.nn as nn | ||
import torch.nn.functional as F | ||
from modeling.sync_batchnorm.batchnorm import SynchronizedBatchNorm2d | ||
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class _ASPPModule(nn.Module): | ||
def __init__(self, inplanes, planes, kernel_size, padding, dilation, BatchNorm): | ||
super(_ASPPModule, self).__init__() | ||
self.atrous_conv = nn.Conv2d(inplanes, planes, kernel_size=kernel_size, | ||
stride=1, padding=padding, dilation=dilation, bias=False) | ||
self.bn = BatchNorm(planes) | ||
self.relu = nn.ReLU() | ||
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self._init_weight() | ||
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def forward(self, x): | ||
x = self.atrous_conv(x) | ||
x = self.bn(x) | ||
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return self.relu(x) | ||
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def _init_weight(self): | ||
for m in self.modules(): | ||
if isinstance(m, nn.Conv2d): | ||
torch.nn.init.kaiming_normal_(m.weight) | ||
elif isinstance(m, SynchronizedBatchNorm2d): | ||
m.weight.data.fill_(1) | ||
m.bias.data.zero_() | ||
elif isinstance(m, nn.BatchNorm2d): | ||
m.weight.data.fill_(1) | ||
m.bias.data.zero_() | ||
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class ASPP(nn.Module): | ||
def __init__(self, backbone, output_stride, BatchNorm): | ||
super(ASPP, self).__init__() | ||
if backbone == 'drn': | ||
inplanes = 512 | ||
elif backbone == 'mobilenet': | ||
inplanes = 320 | ||
else: | ||
inplanes = 2048 | ||
if output_stride == 16: | ||
dilations = [1, 6, 12, 18] | ||
elif output_stride == 8: | ||
dilations = [1, 12, 24, 36] | ||
else: | ||
raise NotImplementedError | ||
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self.aspp1 = _ASPPModule(inplanes, 256, 1, padding=0, dilation=dilations[0], BatchNorm=BatchNorm) | ||
self.aspp2 = _ASPPModule(inplanes, 256, 3, padding=dilations[1], dilation=dilations[1], BatchNorm=BatchNorm) | ||
self.aspp3 = _ASPPModule(inplanes, 256, 3, padding=dilations[2], dilation=dilations[2], BatchNorm=BatchNorm) | ||
self.aspp4 = _ASPPModule(inplanes, 256, 3, padding=dilations[3], dilation=dilations[3], BatchNorm=BatchNorm) | ||
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self.global_avg_pool = nn.Sequential(nn.AdaptiveAvgPool2d((1, 1)), | ||
nn.Conv2d(inplanes, 256, 1, stride=1, bias=False), | ||
BatchNorm(256), | ||
nn.ReLU()) | ||
self.conv1 = nn.Conv2d(1280, 256, 1, bias=False) | ||
self.bn1 = BatchNorm(256) | ||
self.relu = nn.ReLU() | ||
self.dropout = nn.Dropout(0.5) | ||
self._init_weight() | ||
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def forward(self, x): | ||
x1 = self.aspp1(x) | ||
x2 = self.aspp2(x) | ||
x3 = self.aspp3(x) | ||
x4 = self.aspp4(x) | ||
x5 = self.global_avg_pool(x) | ||
x5 = F.interpolate(x5, size=x4.size()[2:], mode='bilinear', align_corners=True) | ||
x = torch.cat((x1, x2, x3, x4, x5), dim=1) | ||
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x = self.conv1(x) | ||
x = self.bn1(x) | ||
x = self.relu(x) | ||
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return self.dropout(x) | ||
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def _init_weight(self): | ||
for m in self.modules(): | ||
if isinstance(m, nn.Conv2d): | ||
# n = m.kernel_size[0] * m.kernel_size[1] * m.out_channels | ||
# m.weight.data.normal_(0, math.sqrt(2. / n)) | ||
torch.nn.init.kaiming_normal_(m.weight) | ||
elif isinstance(m, SynchronizedBatchNorm2d): | ||
m.weight.data.fill_(1) | ||
m.bias.data.zero_() | ||
elif isinstance(m, nn.BatchNorm2d): | ||
m.weight.data.fill_(1) | ||
m.bias.data.zero_() | ||
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def build_aspp(backbone, output_stride, BatchNorm): | ||
return ASPP(backbone, output_stride, BatchNorm) |
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from modeling.backbone import resnet, xception, drn, mobilenet | ||
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def build_backbone(backbone, output_stride, BatchNorm): | ||
if backbone == 'resnet': | ||
return resnet.ResNet101(output_stride, BatchNorm) | ||
elif backbone == 'xception': | ||
return xception.AlignedXception(output_stride, BatchNorm) | ||
elif backbone == 'drn': | ||
return drn.drn_d_54(BatchNorm) | ||
elif backbone == 'mobilenet': | ||
return mobilenet.MobileNetV2(output_stride, BatchNorm) | ||
else: | ||
raise NotImplementedError |
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