initial commit

Author: swathikirans

.gitignore

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+*.pyc
+*.jpg
+*.png

MyConvLSTMCell.py

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+import torch
+import torch.nn as nn
+from torch.autograd import Variable
+import torch.nn.functional as F
+
+class MyConvLSTMCell(nn.Module):
+
+    def __init__(self, input_size, hidden_size, kernel_size=3, stride=1, padding=1):
+        super(MyConvLSTMCell, self).__init__()
+        self.input_size = input_size
+        self.hidden_size = hidden_size
+        self.kernel_size = kernel_size
+        self.stride = stride
+        self.padding = padding
+        self.conv_i_xx = nn.Conv2d(input_size, hidden_size, kernel_size=kernel_size, stride=stride, padding=padding)
+        self.conv_i_hh = nn.Conv2d(hidden_size, hidden_size, kernel_size=kernel_size, stride=stride, padding=padding,
+                                   bias=False)
+
+        self.conv_f_xx = nn.Conv2d(input_size, hidden_size, kernel_size=kernel_size, stride=stride, padding=padding)
+        self.conv_f_hh = nn.Conv2d(hidden_size, hidden_size, kernel_size=kernel_size, stride=stride, padding=padding,
+                                   bias=False)
+
+        self.conv_c_xx = nn.Conv2d(input_size, hidden_size, kernel_size=kernel_size, stride=stride, padding=padding)
+        self.conv_c_hh = nn.Conv2d(hidden_size, hidden_size, kernel_size=kernel_size, stride=stride, padding=padding,
+                                   bias=False)
+
+        self.conv_o_xx = nn.Conv2d(input_size, hidden_size, kernel_size=kernel_size, stride=stride, padding=padding)
+        self.conv_o_hh = nn.Conv2d(hidden_size, hidden_size, kernel_size=kernel_size, stride=stride, padding=padding,
+                                   bias=False)
+
+        torch.nn.init.xavier_normal(self.conv_i_xx.weight)
+        torch.nn.init.constant(self.conv_i_xx.bias, 0)
+        torch.nn.init.xavier_normal(self.conv_i_hh.weight)
+
+        torch.nn.init.xavier_normal(self.conv_f_xx.weight)
+        torch.nn.init.constant(self.conv_f_xx.bias, 0)
+        torch.nn.init.xavier_normal(self.conv_f_hh.weight)
+
+        torch.nn.init.xavier_normal(self.conv_c_xx.weight)
+        torch.nn.init.constant(self.conv_c_xx.bias, 0)
+        torch.nn.init.xavier_normal(self.conv_c_hh.weight)
+
+        torch.nn.init.xavier_normal(self.conv_o_xx.weight)
+        torch.nn.init.constant(self.conv_o_xx.bias, 0)
+        torch.nn.init.xavier_normal(self.conv_o_hh.weight)
+
+    def forward(self, x, state):
+        if state is None:
+            state = (Variable(torch.randn(x.size(0), x.size(1), x.size(2), x.size(3)).cuda()),
+                     Variable(torch.randn(x.size(0), x.size(1), x.size(2), x.size(3)).cuda()))
+        ht_1, ct_1 = state
+        it = F.sigmoid(self.conv_i_xx(x) + self.conv_i_hh(ht_1))
+        ft = F.sigmoid(self.conv_f_xx(x) + self.conv_f_hh(ht_1))
+        ct_tilde = F.tanh(self.conv_c_xx(x) + self.conv_c_hh(ht_1))
+        ct = (ct_tilde * it) + (ct_1 * ft)
+        ot = F.sigmoid(self.conv_o_xx(x) + self.conv_o_hh(ht_1))
+        ht = ot * F.tanh(ct)
+        return ht, ct

README.md

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+# Object-centric Attention for Egocentric Activity Recognition
+
+The git contains the source code associated with our BMVC 2018 paper:
+"Attention is All We Need: Nailing Down Object-centric Attention for Egocentric Activity Recognition"
+The paper is available in [here](https://arxiv.org/pdf/1807.11794.pdf).
+
+#### Prerequisites
+
+* Python 3.5
+* Pytorch 0.3.1
+  #### 
+
+*Training code will be released soon!*
+
+#### **Evaluating the models**
+
+* ##### **RGB**
+* ```
+  python eval-run-rgb.py --dataset gtea61 
+  --datasetDir ./dataset/gtea_61/split2/test 
+  --modelStateDict best_model_state_rgb.pth 
+  --seqLen 25 
+  --memSize 512
+  ```
+* ##### **Flow**
+* ```
+  python eval-run-rgb.py --dataset gtea61 
+  --datasetDir ./dataset/gtea_61/split2/test 
+  --modelStateDict best_model_state_flow.pth 
+  --stackSize 5 
+  --numSegs 5
+  ```
+* ##### **Two Stream**
+* ```
+  python eval-run-twoStream-joint.py --dataset gtea61 
+  --datasetDir ./dataset/gtea_61/split2/test 
+  --modelStateDict best_model_state_twoStream.pth 
+  --seqLen 25 
+  --stackSize 5 
+  --memSize 512
+  ```
+
+#### **Pretrained models**
+
+The models trained on the fixed split \(S2\) of GTEA 61 can be downloaded from the following links
+
+* RGB model [https://drive.google.com/open?id=1B7Xh6hQ9Py8fmL-pjmLzlCent6dnuex5](https://drive.google.com/open?id=1B7Xh6hQ9Py8fmL-pjmLzlCent6dnuex5 "RGB model")
+* Flow model [https://drive.google.com/open?id=1eG-ZF1IwOtYJqpIIeMASURB0uyCM\_cFd](https://drive.google.com/open?id=1eG-ZF1IwOtYJqpIIeMASURB0uyCM_cFd "Flow model")
+* Two stream model [https://drive.google.com/open?id=11U5xbrOr8GtEhpkxY2lpPsyFDFJ8savp](https://drive.google.com/open?id=11U5xbrOr8GtEhpkxY2lpPsyFDFJ8savp "Two stream model")
+
+The dataset can be downloaded from the following link:
+
+[http://www.cbi.gatech.edu/fpv/](http://www.cbi.gatech.edu/fpv/)
+
+Once the videos are downloaded, extract the frames and optical flow using the following implementation:
+
+[https://github.com/yjxiong/dense\_flow](https://github.com/yjxiong/dense_flow)
+
+Run 'prepareGTEA61Dataset.py' script to make the dataset.
+
+Alternatively, the frames and the corresponding warp optical flow of the GTEA 61 dataset can be downloaded from the following link
+
+* [https://drive.google.com/file/d/1\_y8Y3PnCXsngmZVMqZbg-AfJyIdOeQ2\_/view?usp=sharing](https://drive.google.com/file/d/1_y8Y3PnCXsngmZVMqZbg-AfJyIdOeQ2_/view?usp=sharing "GTEA61")
+
+
+

eval-run-flow.py

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+from __future__ import print_function, division
+from flow_resnet import *
+from spatial_transforms import (Compose, ToTensor, CenterCrop, Scale, Normalize)
+from torch.autograd import Variable
+from torch.utils.data.sampler import WeightedRandomSampler
+from makeDatasetFlow import *
+from sklearn.metrics import confusion_matrix
+import matplotlib.pyplot as plt
+import argparse
+import sys
+
+def main_run(dataset, model_state_dict, dataset_dir, stackSize, numSeg):
+
+    if dataset == 'gtea61':
+        num_classes = 61
+    elif dataset == 'gtea71':
+        num_classes = 71
+    elif dataset == 'gtea_gaze':
+        num_classes = 44
+    elif dataset == 'egtea':
+        num_classes = 106
+
+    mean=[0.485, 0.456, 0.406]
+    std=[0.229, 0.224, 0.225]
+
+    normalize = Normalize(mean=mean, std=std)
+
+    spatial_transform = Compose([Scale(256), CenterCrop(224), ToTensor(), normalize])
+
+    vid_seq_test = makeDataset(dataset_dir, spatial_transform=spatial_transform, sequence=True,
+                               numSeg=numSeg, stackSize=stackSize, fmt='.jpg', phase='Test')
+
+    test_loader = torch.utils.data.DataLoader(vid_seq_test, batch_size=1,
+                            shuffle=False, num_workers=2, pin_memory=True)
+
+    model = flow_resnet34(False, channels=2*stackSize, num_classes=num_classes)
+    model.load_state_dict(torch.load(model_state_dict))
+    for params in model.parameters():
+        params.requires_grad = False
+
+    model.train(False)
+    model.cuda()
+    test_samples = vid_seq_test.__len__()
+    print('Number of samples = {}'.format(test_samples))
+    print('Evaluating...')
+    numCorr = 0
+    true_labels = []
+    predicted_labels = []
+
+    for j, (inputs, targets) in enumerate(test_loader):
+        inputVariable = Variable(inputs[0].cuda(), volatile=True)
+        output_label, _ = model(inputVariable)
+        output_label_mean = torch.mean(output_label.data, 0, True)
+        _, predicted = torch.max(output_label_mean, 1)
+        numCorr += (predicted == targets[0]).sum()
+        true_labels.append(targets)
+        predicted_labels.append(predicted)
+    test_accuracy = (numCorr / test_samples) * 100
+    print('Test Accuracy  = {}%'.format(test_accuracy))
+
+    cnf_matrix = confusion_matrix(true_labels, predicted_labels).astype(float)
+    cnf_matrix_normalized = cnf_matrix / cnf_matrix.sum(axis=1)[:, np.newaxis]
+
+    ticks = np.linspace(0, 60, num=61)
+    plt.imshow(cnf_matrix_normalized, interpolation='none', cmap='binary')
+    plt.colorbar()
+    plt.xticks(ticks, fontsize=6)
+    plt.yticks(ticks, fontsize=6)
+    plt.grid(True)
+    plt.clim(0, 1)
+    plt.savefig(dataset + '-flow.jpg', bbox_inches='tight')
+    plt.show()
+
+def __main__():
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--dataset', type=str, default='gtea61', help='Dataset')
+    parser.add_argument('--datasetDir', type=str, default='./dataset/gtea_warped_flow_61/split2/test',
+                        help='Dataset directory')
+    parser.add_argument('--modelStateDict', type=str,
+                        default='./models/gtea61/best_model_state_dict_flow_split2.pth',
+                        help='Model path')
+    parser.add_argument('--stackSize', type=int, default=5, help='Number of optical flow images in input')
+    parser.add_argument('--numSegs', type=int, default=5, help='Number of stacked optical flows')
+
+    args = parser.parse_args()
+
+    dataset = args.dataset
+    model_state_dict = args.modelStateDict
+    dataset_dir = args.datasetDir
+    stackSize = args.stackSize
+    numSegs = args.numSegs
+
+    main_run(dataset, model_state_dict, dataset_dir, stackSize, numSegs)
+
+__main__()

eval-run-rgb.py

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+from __future__ import print_function, division
+from objectAttentionModelConvLSTM import *
+from spatial_transforms import (Compose, ToTensor, CenterCrop, Scale, Normalize)
+from makeDatasetRGB import *
+from sklearn.metrics import confusion_matrix
+import matplotlib.pyplot as plt
+import argparse
+import sys
+
+def main_run(dataset, model_state_dict, dataset_dir, seqLen, memSize):
+
+    if dataset == 'gtea61':
+        num_classes = 61
+    elif dataset == 'gtea71':
+      num_classes = 71
+    elif dataset == 'gtea_gaze':
+        num_classes = 44
+    elif dataset == 'egtea':
+        num_classes = 106
+
+    mean=[0.485, 0.456, 0.406]
+    std=[0.229, 0.224, 0.225]
+
+    normalize = Normalize(mean=mean, std=std)
+    spatial_transform = Compose([Scale(256), CenterCrop(224), ToTensor(), normalize])
+
+    vid_seq_test = makeDataset(dataset_dir,
+                               spatial_transform=spatial_transform,
+                               seqLen=seqLen, fmt='.jpg')
+
+    test_loader = torch.utils.data.DataLoader(vid_seq_test, batch_size=1,
+                            shuffle=False, num_workers=2, pin_memory=True)
+
+    model = attentionModel(num_classes=num_classes, mem_size=memSize)
+    model.load_state_dict(torch.load(model_state_dict))
+
+    for params in model.parameters():
+        params.requires_grad = False
+
+    model.train(False)
+    model.cuda()
+    test_samples = vid_seq_test.__len__()
+    print('Number of samples = {}'.format(test_samples))
+    print('Evaluating...')
+    numCorr = 0
+    true_labels = []
+    predicted_labels = []
+    for j, (inputs, targets) in enumerate(test_loader):
+            inputVariable = Variable(inputs.permute(1, 0, 2, 3, 4).cuda(), volatile=True)
+            output_label, _ = model(inputVariable)
+            _, predicted = torch.max(output_label.data, 1)
+            numCorr += (predicted == targets.cuda()).sum()
+            true_labels.append(targets)
+            predicted_labels.append(predicted)
+    test_accuracy = (numCorr / test_samples) * 100
+    print('Test Accuracy = {}%'.format(test_accuracy))
+
+    cnf_matrix = confusion_matrix(true_labels, predicted_labels).astype(float)
+    cnf_matrix_normalized = cnf_matrix / cnf_matrix.sum(axis=1)[:, np.newaxis]
+
+    ticks = np.linspace(0, 60, num=61)
+    plt.imshow(cnf_matrix_normalized, interpolation='none', cmap='binary')
+    plt.colorbar()
+    plt.xticks(ticks, fontsize=6)
+    plt.yticks(ticks, fontsize=6)
+    plt.grid(True)
+    plt.clim(0, 1)
+    plt.savefig(dataset + '-rgb.jpg', bbox_inches='tight')
+    plt.show()
+
+def __main__():
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--dataset', type=str, default='gtea61', help='Dataset')
+    parser.add_argument('--datasetDir', type=str, default='./dataset/gtea_warped_flow_61/split2/test',
+                        help='Dataset directory')
+    parser.add_argument('--modelStateDict', type=str, default='./models/gtea61/best_model_state_dict_rgb_split2.pth',
+                        help='Model path')
+    parser.add_argument('--seqLen', type=int, default=25, help='Length of sequence')
+    parser.add_argument('--memSize', type=int, default=512, help='ConvLSTM hidden state size')
+
+    args = parser.parse_args()
+
+    dataset = args.dataset
+    model_state_dict = args.modelStateDict
+    dataset_dir = args.datasetDir
+    seqLen = args.seqLen
+    memSize = args.memSize
+
+    main_run(dataset, model_state_dict, dataset_dir, seqLen, memSize)
+
+__main__()