幽灵资源网 Design By www.bzswh.com
Pytorch提取模型特征向量
# -*- coding: utf-8 -*- """ dj """ import torch import torch.nn as nn import os from torchvision import models, transforms from torch.autograd import Variable import numpy as np from PIL import Image import torchvision.models as models import pretrainedmodels import pandas as pd class FCViewer(nn.Module): def forward(self, x): return x.view(x.size(0), -1) class M(nn.Module): def __init__(self, backbone1, drop, pretrained=True): super(M,self).__init__() if pretrained: img_model = pretrainedmodels.__dict__[backbone1](num_classes=1000, pretrained='imagenet') else: img_model = pretrainedmodels.__dict__[backbone1](num_classes=1000, pretrained=None) self.img_encoder = list(img_model.children())[:-2] self.img_encoder.append(nn.AdaptiveAvgPool2d(1)) self.img_encoder = nn.Sequential(*self.img_encoder) if drop > 0: self.img_fc = nn.Sequential(FCViewer()) else: self.img_fc = nn.Sequential( FCViewer()) def forward(self, x_img): x_img = self.img_encoder(x_img) x_img = self.img_fc(x_img) return x_img model1=M('resnet18',0,pretrained=True) features_dir = '/home/cc/Desktop/features' transform1 = transforms.Compose([ transforms.Resize(256), transforms.CenterCrop(224), transforms.ToTensor()]) file_path='/home/cc/Desktop/picture' names = os.listdir(file_path) print(names) for name in names: pic=file_path+'/'+name img = Image.open(pic) img1 = transform1(img) x = Variable(torch.unsqueeze(img1, dim=0).float(), requires_grad=False) y = model1(x) y = y.data.numpy() y = y.tolist() #print(y) test=pd.DataFrame(data=y) #print(test) test.to_csv("/home/cc/Desktop/features/3.csv",mode='a+',index=None,header=None)
jiazaixunlianhaodemoxing
import torch import torch.nn.functional as F import torch.nn as nn import torch.optim as optim import torchvision import torchvision.transforms as transforms import argparse class ResidualBlock(nn.Module): def __init__(self, inchannel, outchannel, stride=1): super(ResidualBlock, self).__init__() self.left = nn.Sequential( nn.Conv2d(inchannel, outchannel, kernel_size=3, stride=stride, padding=1, bias=False), nn.BatchNorm2d(outchannel), nn.ReLU(inplace=True), nn.Conv2d(outchannel, outchannel, kernel_size=3, stride=1, padding=1, bias=False), nn.BatchNorm2d(outchannel) ) self.shortcut = nn.Sequential() if stride != 1 or inchannel != outchannel: self.shortcut = nn.Sequential( nn.Conv2d(inchannel, outchannel, kernel_size=1, stride=stride, bias=False), nn.BatchNorm2d(outchannel) ) def forward(self, x): out = self.left(x) out += self.shortcut(x) out = F.relu(out) return out class ResNet(nn.Module): def __init__(self, ResidualBlock, num_classes=10): super(ResNet, self).__init__() self.inchannel = 64 self.conv1 = nn.Sequential( nn.Conv2d(3, 64, kernel_size=3, stride=1, padding=1, bias=False), nn.BatchNorm2d(64), nn.ReLU(), ) self.layer1 = self.make_layer(ResidualBlock, 64, 2, stride=1) self.layer2 = self.make_layer(ResidualBlock, 128, 2, stride=2) self.layer3 = self.make_layer(ResidualBlock, 256, 2, stride=2) self.layer4 = self.make_layer(ResidualBlock, 512, 2, stride=2) self.fc = nn.Linear(512, num_classes) def make_layer(self, block, channels, num_blocks, stride): strides = [stride] + [1] * (num_blocks - 1) #strides=[1,1] layers = [] for stride in strides: layers.append(block(self.inchannel, channels, stride)) self.inchannel = channels return nn.Sequential(*layers) def forward(self, x): out = self.conv1(x) out = self.layer1(out) out = self.layer2(out) out = self.layer3(out) out = self.layer4(out) out = F.avg_pool2d(out, 4) out = out.view(out.size(0), -1) out = self.fc(out) return out def ResNet18(): return ResNet(ResidualBlock) import os from torchvision import models, transforms from torch.autograd import Variable import numpy as np from PIL import Image import torchvision.models as models import pretrainedmodels import pandas as pd class FCViewer(nn.Module): def forward(self, x): return x.view(x.size(0), -1) class M(nn.Module): def __init__(self, backbone1, drop, pretrained=True): super(M,self).__init__() if pretrained: img_model = pretrainedmodels.__dict__[backbone1](num_classes=1000, pretrained='imagenet') else: img_model = ResNet18() we='/home/cc/Desktop/dj/model1/incption--7' # 模型定义-ResNet #net = ResNet18().to(device) img_model.load_state_dict(torch.load(we))#diaoyong self.img_encoder = list(img_model.children())[:-2] self.img_encoder.append(nn.AdaptiveAvgPool2d(1)) self.img_encoder = nn.Sequential(*self.img_encoder) if drop > 0: self.img_fc = nn.Sequential(FCViewer()) else: self.img_fc = nn.Sequential( FCViewer()) def forward(self, x_img): x_img = self.img_encoder(x_img) x_img = self.img_fc(x_img) return x_img model1=M('resnet18',0,pretrained=None) features_dir = '/home/cc/Desktop/features' transform1 = transforms.Compose([ transforms.Resize(56), transforms.CenterCrop(32), transforms.ToTensor()]) file_path='/home/cc/Desktop/picture' names = os.listdir(file_path) print(names) for name in names: pic=file_path+'/'+name img = Image.open(pic) img1 = transform1(img) x = Variable(torch.unsqueeze(img1, dim=0).float(), requires_grad=False) y = model1(x) y = y.data.numpy() y = y.tolist() #print(y) test=pd.DataFrame(data=y) #print(test) test.to_csv("/home/cc/Desktop/features/3.csv",mode='a+',index=None,header=None)
以上这篇Pytorch提取模型特征向量保存至csv的例子就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持。
幽灵资源网 Design By www.bzswh.com
广告合作:本站广告合作请联系QQ:858582 申请时备注:广告合作(否则不回)
免责声明:本站文章均来自网站采集或用户投稿,网站不提供任何软件下载或自行开发的软件! 如有用户或公司发现本站内容信息存在侵权行为,请邮件告知! 858582#qq.com
免责声明:本站文章均来自网站采集或用户投稿,网站不提供任何软件下载或自行开发的软件! 如有用户或公司发现本站内容信息存在侵权行为,请邮件告知! 858582#qq.com
幽灵资源网 Design By www.bzswh.com
暂无评论...
P70系列延期,华为新旗舰将在下月发布
3月20日消息,近期博主@数码闲聊站 透露,原定三月份发布的华为新旗舰P70系列延期发布,预计4月份上市。
而博主@定焦数码 爆料,华为的P70系列在定位上已经超过了Mate60,成为了重要的旗舰系列之一。它肩负着重返影像领域顶尖的使命。那么这次P70会带来哪些令人惊艳的创新呢?
根据目前爆料的消息来看,华为P70系列将推出三个版本,其中P70和P70 Pro采用了三角形的摄像头模组设计,而P70 Art则采用了与上一代P60 Art相似的不规则形状设计。这样的外观是否好看见仁见智,但辨识度绝对拉满。