开发环境

• python–3.7
• torch–1.8+cu101
• torchsummary
• torchvision–0.6.1+cu101
• PIL
• numpy
• opencv-python
• pillow

准备工作

Inception-ResNet-v2预训练模型权重下载地址：
https://data.lip6.fr/cadene/pretrainedmodels/inceptionresnetv2-520b38e4.pth
Inception-V4预训练模型权重下载地址：
https://data.lip6.fr/cadene/pretrainedmodels/inceptionv4-8e4777a0.pth

项目代码结构

• data文件夹存储了Inception-ResNet-v2预训练模型权重文件、Inception-V4预训练模型权重文件和推理demo相关文件
• src存储了Inception-ResNet-v2推理程序文件和Inception-V4推理程序文件
• tools存储了Inception-ResNet-v2和Inception-V4的模型构建文件。

Inception-V4网络结构定义程序

整体结构图及stem部分

从左到右分别为Inception-v4中的 Inception Ａ、 Inception Ｂ、 Inception Ｃ模块

Inception-v4中的 Reduction模块

from __future__ import print_function, division, absolute_import
import torch
import torch.nn as nn
import torch.nn.functional as F
import torch.utils.model_zoo as model_zoo


class InceptionV4(nn.Module):

    def __init__(self, num_classes=1001):
        super(InceptionV4, self).__init__()
        # Special attributs
        self.input_space = None
        self.input_size = (299, 299, 3)
        self.mean = None
        self.std = None
        # Modules
        self.features = nn.Sequential(
            # 1/6: Stem
            BasicConv2d(3, 32, kernel_size=3, stride=2),                # marked with V
            BasicConv2d(32, 32, kernel_size=3, stride=1),               # marked with V
            BasicConv2d(32, 64, kernel_size=3, stride=1, padding=1),    # not marked with V
            Mixed_3a(),
            Mixed_4a(),
            Mixed_5a(),

            # 2/6 Inception-A
            Inception_A(),
            Inception_A(),
            Inception_A(),
            Inception_A(),

            # 3/6 Reduction-A
            Reduction_A(),  # Mixed_6a

            # 4/6 Inception-B
            Inception_B(),
            Inception_B(),
            Inception_B(),
            Inception_B(),
            Inception_B(),
            Inception_B(),
            Inception_B(),

            # 5/6 Reduction-B
            Reduction_B(),  # Mixed_7a

            # 6/6 Inception-C
            Inception_C(),
            Inception_C(),
            Inception_C()
        )
        self.last_linear = nn.Linear(1536, num_classes)

    def logits(self, features):
        # Allows image of any size to be processed
        adaptiveAvgPoolWidth = features.shape[2]                        # 这两行代码实现特征图池化到1*1大小
        x = F.avg_pool2d(features, kernel_size=adaptiveAvgPoolWidth)    # 这两行代码实现特征图池化到1*1大小
        x = x.view(x.size(0), -1)
        x = self.last_linear(x)
        return x

    def forward(self, input):
        x = self.features(input)
        x = self.logits(x)
        return x


class BasicConv2d(nn.Module):

    def __init__(self, in_planes, out_planes, kernel_size, stride, padding=0):
        super(BasicConv2d, self).__init__()
        self.conv = nn.Conv2d(in_planes,
                              out_planes,
                              kernel_size=kernel_size,
                              stride=stride,
                              padding=(padding, ),
                              bias=False)  # verify bias false
        self.bn = nn.BatchNorm2d(out_planes,
                                 eps=0.001,  # value found in tensorflow
                                 momentum=0.1,  # default pytorch value
                                 affine=True)
        self.relu = nn.ReLU(inplace=True)

    def forward(self, x):
        x = self.conv(x)
        x = self.bn(x)
        x = self.relu(x)
        return x


# Stem
class Mixed_3a(nn.Module):

    def __init__(self):
        super(Mixed_3a, self).__init__()
        self.maxpool = nn.MaxPool2d(3, stride=2)
        self.conv = BasicConv2d(64, 96, kernel_size=3, stride=2)

    def forward(self, x):
        x0 = self.maxpool(x)
        x1 = self.conv(x)
        out = torch.cat((x0, x1), 1)
        return out


# Stem
class Mixed_4a(nn.Module):

    def __init__(self):
        super(Mixed_4a, self).__init__()

        self.branch0 = nn.Sequential(
            BasicConv2d(160, 64, kernel_size=1, stride=1),
            BasicConv2d(64, 96, kernel_size=3, stride=1)
        )

        self.branch1 = nn.Sequential(
            BasicConv2d(160, 64, kernel_size=1, stride=1),
            BasicConv2d(64, 64, kernel_size=(1, 7), stride=1, padding=(0, 3)),
            BasicConv2d(64, 64, kernel_size=(7, 1), stride=1, padding=(3, 0)),
            BasicConv2d(64, 96, kernel_size=(3, 3), stride=1)
        )

    def forward(self, x):
        x0 = self.branch0(x)
        x1 = self.branch1(x)
        out = torch.cat((x0, x1), 1)
        return out


# Stem
class Mixed_5a(nn.Module):

    def __init__(self):
        super(Mixed_5a, self).__init__()
        self.conv = BasicConv2d(192, 192, kernel_size=3, stride=2)
        self.maxpool = nn.MaxPool2d(3, stride=2)

    def forward(self, x):
        x0 = self.conv(x)
        x1 = self.maxpool(x)
        out = torch.cat((x0, x1), 1)
        return out


class Inception_A(nn.Module):

    def __init__(self):
        super(Inception_A, self).__init__()
        self.branch0 = BasicConv2d(384, 96, kernel_size=1, stride=1)

        self.branch1 = nn.Sequential(
            BasicConv2d(384, 64, kernel_size=1, stride=1),
            BasicConv2d(64, 96, kernel_size=3, stride=1, padding=1)
        )

        self.branch2 = nn.Sequential(
            BasicConv2d(384, 64, kernel_size=1, stride=1),
            BasicConv2d(64, 96, kernel_size=3, stride=1, padding=1),
            BasicConv2d(96, 96, kernel_size=3, stride=1, padding=1)
        )

        self.branch3 = nn.Sequential(
            nn.AvgPool2d(3, stride=1, padding=1, count_include_pad=False),
            BasicConv2d(384, 96, kernel_size=1, stride=1)
        )

    def forward(self, x):
        x0 = self.branch0(x)
        x1 = self.branch1(x)
        x2 = self.branch2(x)
        x3 = self.branch3(x)
        out = torch.cat((x0, x1, x2, x3), 1)
        return out


class Reduction_A(nn.Module):

    def __init__(self):
        super(Reduction_A, self).__init__()
        self.branch0 = BasicConv2d(384, 384, kernel_size=3, stride=2)

        self.branch1 = nn.Sequential(
            BasicConv2d(384, 192, kernel_size=1, stride=1),
            BasicConv2d(192, 224, kernel_size=3, stride=1, padding=1),
            BasicConv2d(224, 256, kernel_size=3, stride=2)
        )

        self.branch2 = nn.MaxPool2d(3, stride=2)

    def forward(self, x):
        x0 = self.branch0(x)
        x1 = self.branch1(x)
        x2 = self.branch2(x)
        out = torch.cat((x0, x1, x2), 1)
        return out


class Inception_B(nn.Module):

    def __init__(self):
        super(Inception_B, self).__init__()
        self.branch0 = BasicConv2d(1024, 384, kernel_size=1, stride=1)

        self.branch1 = nn.Sequential(
            BasicConv2d(1024, 192, kernel_size=1, stride=1),
            BasicConv2d(192, 224, kernel_size=(1, 7), stride=1, padding=(0, 3)),
            BasicConv2d(224, 256, kernel_size=(7, 1), stride=1, padding=(3, 0))
        )

        self.branch2 = nn.Sequential(
            BasicConv2d(1024, 192, kernel_size=1, stride=1),
            BasicConv2d(192, 192, kernel_size=(7, 1), stride=1, padding=(3, 0)),
            BasicConv2d(192, 224, kernel_size=(1, 7), stride=1, padding=(0, 3)),
            BasicConv2d(224, 224, kernel_size=(7, 1), stride=1, padding=(3, 0)),
            BasicConv2d(224, 256, kernel_size=(1, 7), stride=1, padding=(0, 3))
        )

        self.branch3 = nn.Sequential(
            nn.AvgPool2d(3, stride=1, padding=1, count_include_pad=False),
            BasicConv2d(1024, 128, kernel_size=1, stride=1)
        )

    def forward(self, x):
        x0 = self.branch0(x)
        x1 = self.branch1(x)
        x2 = self.branch2(x)
        x3 = self.branch3(x)
        out = torch.cat((x0, x1, x2, x3), 1)
        return out


class Reduction_B(nn.Module):

    def __init__(self):
        super(Reduction_B, self).__init__()

        self.branch0 = nn.Sequential(
            BasicConv2d(1024, 192, kernel_size=1, stride=1),
            BasicConv2d(192, 192, kernel_size=3, stride=2)
        )

        self.branch1 = nn.Sequential(
            BasicConv2d(1024, 256, kernel_size=1, stride=1),
            BasicConv2d(256, 256, kernel_size=(1, 7), stride=1, padding=(0, 3)),
            BasicConv2d(256, 320, kernel_size=(7, 1), stride=1, padding=(3, 0)),
            BasicConv2d(320, 320, kernel_size=3, stride=2)
        )

        self.branch2 = nn.MaxPool2d(3, stride=2)

    def forward(self, x):
        x0 = self.branch0(x)
        x1 = self.branch1(x)
        x2 = self.branch2(x)
        out = torch.cat((x0, x1, x2), 1)
        return out


class Inception_C(nn.Module):

    def __init__(self):
        super(Inception_C, self).__init__()

        self.branch0 = BasicConv2d(1536, 256, kernel_size=1, stride=1)

        self.branch1_0 = BasicConv2d(1536, 384, kernel_size=1, stride=1)
        self.branch1_1a = BasicConv2d(384, 256, kernel_size=(1, 3), stride=1, padding=(0, 1))
        self.branch1_1b = BasicConv2d(384, 256, kernel_size=(3, 1), stride=1, padding=(1, 0))

        self.branch2_0 = BasicConv2d(1536, 384, kernel_size=1, stride=1)
        self.branch2_1 = BasicConv2d(384, 448, kernel_size=(3, 1), stride=1, padding=(1, 0))
        self.branch2_2 = BasicConv2d(448, 512, kernel_size=(1, 3), stride=1, padding=(0, 1))
        self.branch2_3a = BasicConv2d(512, 256, kernel_size=(1, 3), stride=1, padding=(0, 1))
        self.branch2_3b = BasicConv2d(512, 256, kernel_size=(3, 1), stride=1, padding=(1, 0))

        self.branch3 = nn.Sequential(
            nn.AvgPool2d(3, stride=1, padding=1, count_include_pad=False),
            BasicConv2d(1536, 256, kernel_size=1, stride=1)
        )

    def forward(self, x):
        x0 = self.branch0(x)

        x1_0 = self.branch1_0(x)
        x1_1a = self.branch1_1a(x1_0)
        x1_1b = self.branch1_1b(x1_0)
        x1 = torch.cat((x1_1a, x1_1b), 1)

        x2_0 = self.branch2_0(x)
        x2_1 = self.branch2_1(x2_0)
        x2_2 = self.branch2_2(x2_1)
        x2_3a = self.branch2_3a(x2_2)
        x2_3b = self.branch2_3b(x2_2)
        x2 = torch.cat((x2_3a, x2_3b), 1)

        x3 = self.branch3(x)

        out = torch.cat((x0, x1, x2, x3), 1)
        return out

InceptionResNetV2网络结构程序

from __future__ import print_function, division, absolute_import
import torch
import torch.nn as nn
import torch.utils.model_zoo as model_zoo

class InceptionResNetV2(nn.Module):

    def __init__(self, num_classes=1001):
        super(InceptionResNetV2, self).__init__()
        # Special attributs
        self.input_space = None
        self.input_size = (299, 299, 3)
        self.mean = None
        self.std = None
        # Modules
        # 1/6 Stem
        self.conv2d_1a = BasicConv2d(3, 32, kernel_size=3, stride=2)                 # marked with V
        self.conv2d_2a = BasicConv2d(32, 32, kernel_size=3, stride=1)                # marked with V
        self.conv2d_2b = BasicConv2d(32, 64, kernel_size=3, stride=1, padding=1)     # not marked with V
        self.maxpool_3a = nn.MaxPool2d(3, stride=2)
        self.conv2d_3b = BasicConv2d(64, 80, kernel_size=1, stride=1)
        self.conv2d_4a = BasicConv2d(80, 192, kernel_size=3, stride=1)
        self.maxpool_5a = nn.MaxPool2d(3, stride=2)

        # 2/6
        self.mixed_5b = Mixed_5b()      # 额外增加的
        self.repeat = nn.Sequential(    # Inception-resnet-A * 10, 论文是*5
            Block35(scale=0.17),
            Block35(scale=0.17),
            Block35(scale=0.17),
            Block35(scale=0.17),
            Block35(scale=0.17),
            Block35(scale=0.17),
            Block35(scale=0.17),
            Block35(scale=0.17),
            Block35(scale=0.17),
            Block35(scale=0.17)
        )

        # 3/6 Reduction-A figure7.
        self.mixed_6a = Mixed_6a()

        # 4/6 Inception-resnet-B  * 20， figure17.
        self.repeat_1 = nn.Sequential(
            Block17(scale=0.10),
            Block17(scale=0.10),
            Block17(scale=0.10),
            Block17(scale=0.10),
            Block17(scale=0.10),
            Block17(scale=0.10),
            Block17(scale=0.10),
            Block17(scale=0.10),
            Block17(scale=0.10),
            Block17(scale=0.10),
            Block17(scale=0.10),
            Block17(scale=0.10),
            Block17(scale=0.10),
            Block17(scale=0.10),
            Block17(scale=0.10),
            Block17(scale=0.10),
            Block17(scale=0.10),
            Block17(scale=0.10),
            Block17(scale=0.10),
            Block17(scale=0.10)
        )

        # 5/6 Reduction-B figure 18.   8*8*1792
        self.mixed_7a = Mixed_7a()

        # 6/6 Inception-C *9    figure 19.
        self.repeat_2 = nn.Sequential(
            Block8(scale=0.20),
            Block8(scale=0.20),
            Block8(scale=0.20),
            Block8(scale=0.20),
            Block8(scale=0.20),
            Block8(scale=0.20),
            Block8(scale=0.20),
            Block8(scale=0.20),
            Block8(scale=0.20)
        )
        self.block8 = Block8(noReLU=True)
        self.conv2d_7b = BasicConv2d(2080, 1536, kernel_size=1, stride=1)
        self.avgpool_1a = nn.AvgPool2d(8, count_include_pad=False)
        self.last_linear = nn.Linear(1536, num_classes)

    def features(self, input):

        # 1/6 Stem: figure 14.
        x = self.conv2d_1a(input)   # 149*149*32
        x = self.conv2d_2a(x)       # 147*147*32
        x = self.conv2d_2b(x)       # 149*149*64
        x = self.maxpool_3a(x)      # 73*73*64
        x = self.conv2d_3b(x)       # 73*73*80
        x = self.conv2d_4a(x)       # 71*71*192
        x = self.maxpool_5a(x)      # 35*35*192

        # 2/6 Inception-resnet-A： figure 16.
        x = self.mixed_5b(x)        # 35*35*320 标准Inception moudle, 额外增加的
        x = self.repeat(x)          # 35*35*320 论文是35*35*384

        # 3/6 Reduction-A  figure7.
        x = self.mixed_6a(x)        # 17*17*1088

        # 4/6 Inception-resnet-B  figure17.
        x = self.repeat_1(x)        # 17*17*1088

        # 5/6 Reduction-B figure 18.
        x = self.mixed_7a(x)        # 8*8*2080

        # 6/6 Inception-C figure 19.
        x = self.repeat_2(x)        # 8*8*2080
        x = self.block8(x)          # 该模块输出前未用Relu，原因未知

        # 1*1卷积压缩特征图厚度：2080 --> 1536
        x = self.conv2d_7b(x)       # 8*8*1536

        return x

    def logits(self, features):
        x = self.avgpool_1a(features)       # 1*1*1536
        x = x.view(x.size(0), -1)           # 1536
        x = self.last_linear(x)             # 1000
        return x

    def forward(self, input):
        x = self.features(input)
        x = self.logits(x)
        return x

class BasicConv2d(nn.Module):

    def __init__(self, in_planes, out_planes, kernel_size, stride, padding=0):
        super(BasicConv2d, self).__init__()
        self.conv = nn.Conv2d(in_planes, out_planes,
                              kernel_size=kernel_size,
                              stride=stride,
                              padding=(padding,),
                              bias=False)  # verify bias false
        self.bn = nn.BatchNorm2d(out_planes,
                                 eps=0.001,  # value found in tensorflow
                                 momentum=0.1,  # default pytorch value
                                 affine=True)
        self.relu = nn.ReLU(inplace=False)

    def forward(self, x):
        x = self.conv(x)
        x = self.bn(x)
        x = self.relu(x)
        return x


# 标准Inception module
class Mixed_5b(nn.Module):

    def __init__(self):
        super(Mixed_5b, self).__init__()

        # branch0: 1*1
        self.branch0 = BasicConv2d(192, 96, kernel_size=1, stride=1)

        # branch1: 1*1, 5*5
        self.branch1 = nn.Sequential(
            BasicConv2d(192, 48, kernel_size=1, stride=1),
            BasicConv2d(48, 64, kernel_size=5, stride=1, padding=2)
        )

        # branch2: 1*1, 3*3, 3*3
        self.branch2 = nn.Sequential(
            BasicConv2d(192, 64, kernel_size=1, stride=1),
            BasicConv2d(64, 96, kernel_size=3, stride=1, padding=1),
            BasicConv2d(96, 96, kernel_size=3, stride=1, padding=1)
        )

        # branch3: avgPool, 1*1
        self.branch3 = nn.Sequential(
            nn.AvgPool2d(3, stride=1, padding=1, count_include_pad=False),
            BasicConv2d(192, 64, kernel_size=1, stride=1)
        )

    def forward(self, x):
        x0 = self.branch0(x)
        x1 = self.branch1(x)
        x2 = self.branch2(x)
        x3 = self.branch3(x)
        out = torch.cat((x0, x1, x2, x3), 1)       # 96+64+96+64 = 320
        return out

# figure 16.
class Block35(nn.Module):

    def __init__(self, scale=1.0):
        super(Block35, self).__init__()

        self.scale = scale

        self.branch0 = BasicConv2d(320, 32, kernel_size=1, stride=1)

        self.branch1 = nn.Sequential(
            BasicConv2d(320, 32, kernel_size=1, stride=1),
            BasicConv2d(32, 32, kernel_size=3, stride=1, padding=1)
        )

        self.branch2 = nn.Sequential(
            BasicConv2d(320, 32, kernel_size=1, stride=1),
            BasicConv2d(32, 48, kernel_size=3, stride=1, padding=1),
            BasicConv2d(48, 64, kernel_size=3, stride=1, padding=1)
        )

        self.conv2d = nn.Conv2d(128, 320, kernel_size=(1,), stride=(1,))
        self.relu = nn.ReLU(inplace=False)

    def forward(self, x):
        x0 = self.branch0(x)
        x1 = self.branch1(x)
        x2 = self.branch2(x)
        out = torch.cat((x0, x1, x2), 1)
        out = self.conv2d(out)
        out = out * self.scale + x
        out = self.relu(out)
        return out


# Reduction-A figure7.
class Mixed_6a(nn.Module):

    def __init__(self):
        super(Mixed_6a, self).__init__()

        self.branch0 = BasicConv2d(320, 384, kernel_size=3, stride=2)

        self.branch1 = nn.Sequential(
            BasicConv2d(320, 256, kernel_size=1, stride=1),
            BasicConv2d(256, 256, kernel_size=3, stride=1, padding=1),
            BasicConv2d(256, 384, kernel_size=3, stride=2)
        )

        self.branch2 = nn.MaxPool2d(3, stride=2)

    def forward(self, x):
        x0 = self.branch0(x)
        x1 = self.branch1(x)
        x2 = self.branch2(x)
        out = torch.cat((x0, x1, x2), 1)
        return out


# Inception-resnet-B figure17.
class Block17(nn.Module):

    def __init__(self, scale=1.0):
        super(Block17, self).__init__()

        self.scale = scale

        self.branch0 = BasicConv2d(1088, 192, kernel_size=1, stride=1)

        self.branch1 = nn.Sequential(
            BasicConv2d(1088, 128, kernel_size=1, stride=1),
            BasicConv2d(128, 160, kernel_size=(1, 7), stride=1, padding=(0, 3)),
            BasicConv2d(160, 192, kernel_size=(7, 1), stride=1, padding=(3, 0))
        )

        self.conv2d = nn.Conv2d(384, 1088, kernel_size=1, stride=1)     # 论文为1154，此处为1088，这个参数必须与输入的一样
        self.relu = nn.ReLU(inplace=False)

    def forward(self, x):
        x0 = self.branch0(x)
        x1 = self.branch1(x)
        out = torch.cat((x0, x1), 1)
        out = self.conv2d(out)
        out = out * self.scale + x
        out = self.relu(out)
        return out


# Reduction-B figure 18.
class Mixed_7a(nn.Module):

    def __init__(self):
        super(Mixed_7a, self).__init__()

        self.branch0 = nn.Sequential(
            BasicConv2d(1088, 256, kernel_size=1, stride=1),
            BasicConv2d(256, 384, kernel_size=3, stride=2)
        )

        self.branch1 = nn.Sequential(
            BasicConv2d(1088, 256, kernel_size=1, stride=1),
            BasicConv2d(256, 288, kernel_size=3, stride=2)
        )

        self.branch2 = nn.Sequential(
            BasicConv2d(1088, 256, kernel_size=1, stride=1),
            BasicConv2d(256, 288, kernel_size=3, stride=1, padding=1),
            BasicConv2d(288, 320, kernel_size=3, stride=2)
        )

        self.branch3 = nn.MaxPool2d(3, stride=2)

    def forward(self, x):
        x0 = self.branch0(x)
        x1 = self.branch1(x)
        x2 = self.branch2(x)
        x3 = self.branch3(x)
        out = torch.cat((x0, x1, x2, x3), 1)
        return out


# Inception-C figure 19.
class Block8(nn.Module):

    def __init__(self, scale=1.0, noReLU=False):
        super(Block8, self).__init__()

        self.scale = scale
        self.noReLU = noReLU

        self.branch0 = BasicConv2d(2080, 192, kernel_size=1, stride=1)

        self.branch1 = nn.Sequential(
            BasicConv2d(2080, 192, kernel_size=1, stride=1),
            BasicConv2d(192, 224, kernel_size=(1, 3), stride=1, padding=(0, 1)),
            BasicConv2d(224, 256, kernel_size=(3, 1), stride=1, padding=(1, 0))
        )

        self.conv2d = nn.Conv2d(448, 2080, kernel_size=1, stride=1)
        if not self.noReLU:
            self.relu = nn.ReLU(inplace=False)

    def forward(self, x):
        x0 = self.branch0(x)
        x1 = self.branch1(x)
        out = torch.cat((x0, x1), 1)
        out = self.conv2d(out)
        out = out * self.scale + x
        if not self.noReLU:
            out = self.relu(out)
        return out

inception_v4推理程序

import os
import time
import json
import torch
import torchvision.transforms as transforms
from PIL import Image
from matplotlib import pyplot as plt
from tools.common_tools import get_inception_v4

os.environ['NLS_LANG'] = 'SIMPLIFIED CHINESE_CHINA.UTF8'
BASE_DIR = os.path.dirname(os.path.abspath(__file__))
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")


def img_transform(img_rgb, transform=None):
    """
    将数据转换为模型读取的形式
    :param img_rgb: PIL Image
    :param transform: torchvision.transform
    :return: tensor
    """

    if transform is None:
        raise ValueError("找不到transform！必须有transform对img进行处理")

    img_t = transform(img_rgb)
    return img_t


def process_img(path_img):

    # hard code
    norm_mean = [0.485, 0.456, 0.406]
    norm_std = [0.229, 0.224, 0.225]
    inference_transform = transforms.Compose([
        # transforms.Resize(256),
        transforms.CenterCrop((299, 299)),
        transforms.ToTensor(),
        transforms.Normalize(norm_mean, norm_std),
    ])

    # path --> img
    img_rgb = Image.open(path_img).convert('RGB')

    # img --> tensor
    img_tensor = img_transform(img_rgb, inference_transform)
    img_tensor.unsqueeze_(0)        # chw --> bchw
    img_tensor = img_tensor.to(device)

    return img_tensor, img_rgb


def load_class_names(p_clsnames, p_clsnames_cn):
    """
    加载标签名
    :param p_clsnames:
    :param p_clsnames_cn:
    :return:
    """
    with open(p_clsnames, "r") as f:
        class_names = json.load(f)
    with open(p_clsnames_cn, encoding='UTF-8') as f:  # 设置文件对象
        class_names_cn = f.readlines()
    return class_names, class_names_cn


if __name__ == "__main__":

    # config
    path_state_dict_v4 = os.path.join(BASE_DIR, "..", "data", "inceptionv4-8e4777a0.pth")
    # path_img = os.path.join(BASE_DIR, "..", "data","Golden Retriever from baidu.jpg")
    path_img = os.path.join(BASE_DIR, "..", "data", "tiger cat.jpg")
    path_classnames = os.path.join(BASE_DIR, "..", "data", "imagenet1000.json")
    path_classnames_cn = os.path.join(BASE_DIR, "..", "data", "imagenet_classnames.txt")

    # load class names
    cls_n, cls_n_cn = load_class_names(path_classnames, path_classnames_cn)

    # 1/5 load img
    img_tensor, img_rgb = process_img(path_img)

    # 2/5 load model
    model = get_inception_v4(path_state_dict_v4, device, True)

    # 3/5 inference  tensor --> vector
    with torch.no_grad():
        time_tic = time.time()
        outputs = model(img_tensor)
        time_toc = time.time()

    # 4/5 index to class names
    _, pred_int = torch.max(outputs.data, 1)
    _, top5_idx = torch.topk(outputs.data, 5, dim=1)

    pred_idx = int(pred_int.cpu().numpy())
    pred_str, pred_cn = cls_n[pred_idx], cls_n_cn[pred_idx]
    print("img: {} is: {}\n{}".format(os.path.basename(path_img), pred_str, pred_cn))
    print("time consuming:{:.2f}s".format(time_toc - time_tic))

    # 5/5 visualization
    plt.imshow(img_rgb)
    plt.title("predict:{}".format(pred_str))
    top5_num = top5_idx.cpu().numpy().squeeze()
    text_str = [cls_n[t] for t in top5_num]
    for idx in range(len(top5_num)):
        plt.text(5, 15+idx*30, "top {}:{}".format(idx+1, text_str[idx]), bbox=dict(fc='yellow'))
    plt.show()

inception_resnet_v2推理程序

import os
import time
import json
import torch
import torchvision.transforms as transforms
from PIL import Image
from matplotlib import pyplot as plt
from tools.common_tools import get_inception_resnet_v2

os.environ['NLS_LANG'] = 'SIMPLIFIED CHINESE_CHINA.UTF8'
BASE_DIR = os.path.dirname(os.path.abspath(__file__))
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")


def img_transform(img_rgb, transform=None):
    """
    将数据转换为模型读取的形式
    :param img_rgb: PIL Image
    :param transform: torchvision.transform
    :return: tensor
    """

    if transform is None:
        raise ValueError("找不到transform！必须有transform对img进行处理")

    img_t = transform(img_rgb)
    return img_t


def process_img(path_img):

    # hard code
    norm_mean = [0.485, 0.456, 0.406]
    norm_std = [0.229, 0.224, 0.225]
    inference_transform = transforms.Compose([
        # transforms.Resize(256),
        transforms.CenterCrop((299, 299)),
        transforms.ToTensor(),
        transforms.Normalize(norm_mean, norm_std),
    ])

    # path --> img
    img_rgb = Image.open(path_img).convert('RGB')

    # img --> tensor
    img_tensor = img_transform(img_rgb, inference_transform)
    img_tensor.unsqueeze_(0)        # chw --> bchw
    img_tensor = img_tensor.to(device)

    return img_tensor, img_rgb


def load_class_names(p_clsnames, p_clsnames_cn):
    """
    加载标签名
    :param p_clsnames:
    :param p_clsnames_cn:
    :return:
    """
    with open(p_clsnames, "r") as f:
        class_names = json.load(f)
    with open(p_clsnames_cn, encoding='UTF-8') as f:  # 设置文件对象
        class_names_cn = f.readlines()
    return class_names, class_names_cn


if __name__ == "__main__":

    # config
    path_state_dict_v2 = os.path.join(BASE_DIR, "..", "data", "inceptionresnetv2-520b38e4.pth")
    path_img = os.path.join(BASE_DIR, "..", "data","Golden Retriever from baidu.jpg")
    # path_img = os.path.join(BASE_DIR, "..", "data", "tiger cat.jpg")
    path_classnames = os.path.join(BASE_DIR, "..", "data", "imagenet1000.json")
    path_classnames_cn = os.path.join(BASE_DIR, "..", "data", "imagenet_classnames.txt")

    # load class names
    cls_n, cls_n_cn = load_class_names(path_classnames, path_classnames_cn)

    # 1/5 load img
    img_tensor, img_rgb = process_img(path_img)

    # 2/5 load model
    model = get_inception_resnet_v2(path_state_dict_v2, device, True)

    # 3/5 inference  tensor --> vector
    with torch.no_grad():
        time_tic = time.time()
        outputs = model(img_tensor)
        time_toc = time.time()

    # 4/5 index to class names
    _, pred_int = torch.max(outputs.data, 1)
    _, top5_idx = torch.topk(outputs.data, 5, dim=1)

    pred_idx = int(pred_int.cpu().numpy())
    pred_str, pred_cn = cls_n[pred_idx], cls_n_cn[pred_idx]
    print("img: {} is: {}\n{}".format(os.path.basename(path_img), pred_str, pred_cn))
    print("time consuming:{:.2f}s".format(time_toc - time_tic))

    # 5/5 visualization
    plt.imshow(img_rgb)
    plt.title("predict:{}".format(pred_str))
    top5_num = top5_idx.cpu().numpy().squeeze()
    text_str = [cls_n[t] for t in top5_num]
    for idx in range(len(top5_num)):
        plt.text(5, 15+idx*30, "top {}:{}".format(idx+1, text_str[idx]), bbox=dict(fc='yellow'))
        print(text_str[idx])
    plt.show()