pytorch_MLEM

This is a simplified version of MELM with context in pytorch for the paper《Min-Entropy Latent Model for Weakly Supervised Object Detection》,which is a accepted paper in CVPR2018 and TPAMI.

This implementation is based on Winfrand's which is the official version based on torch7 and lua. This implementation is also based on ruotianluo's pytorch-faster-rcnn.

And trained on PASCAL_VOC 2007 trainval and tested on PASCAL_VOC test with VGG16 backbone, I got a performance mAP 47.98 a little better than the paper's result

If you find MELM useful and use this code, please cite our paper:

@inproceedings{wan2018min,
  title={Min-Entropy Latent Model for Weakly Supervised Object Detection},
  author={Wan, Fang and Wei, Pengxu and Jiao, Jianbin and Han, Zhenjun and Ye, Qixiang},
  booktitle={Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition},
  pages={1297--1306},
  year={2018}
}

@article{wan2019Pami,
  author    = {Fang Wan and 
               Pengxu Wei and
               Jianbin Jiao and
               Zhenjun Han and 
               Qixiang Ye},
  title     = {Min-Entropy Latent Model for Weakly Supervised Object Detection},
  journal   = {{IEEE} Trans. Pattern Anal. Mach. Intell.},
  volume       = {DOI:10.1109/TPAMI.2019.2898858},
  year      = {2019}
}

Prerequisites

• Nvidia GPU 1080Ti
• Ubuntu 16.04 LTS
• python 3.6
• pytorch 0.4 is required and we will update a new version for pytorch 1.0 soon.
• tensorflow, tensorboard and tensorboardX for visualizing training and validation curve.

Installation

1. Clone the repository

git clone https://github.com/vasgaowei/pytorch_MELM.git

2. Compile the modules(nms, roi_pooling, roi_ring_pooling and roi_align)

cd pytorch_MELM/lib
bash make.sh

Setup the data

1. Download the training, validation, test data and the VOCdevkit

cd pytorch_MELM/
mkdir data
cd data/
wget http://host.robots.ox.ac.uk/pascal/VOC/voc2007/VOCtrainval_06-Nov-2007.tar
wget http://host.robots.ox.ac.uk/pascal/VOC/voc2007/VOCtest_06-Nov-2007.tar
wget http://host.robots.ox.ac.uk/pascal/VOC/voc2007/VOCdevkit_08-Jun-2007.tar

2. Extract all of these tars into one directory named VOCdevkit

tar xvf VOCtrainval_06-Nov-2007.tar
tar xvf VOCtest_06-Nov-2007.tar
tar xvf VOCdevkit_08-Jun-2007.tar

3. Create symlinks for PASCAL VOC dataset or just rename the VOCdevkit to VOCdevkit2007

cd pytorch_MELM/data
ln -s VOCdevkit VOCdevkit2007

4. It should have this basic structure

$VOCdevkit2007/                     # development kit
$VOCdevkit2007/VOC2007/             # VOC utility code
$VOCdevkit2007/VOCcode/             # image sets, annodations, etc

And for PASCAL VOC 2010 and PASCAL VOC 2012, just following the similar steps.

Download the pre-trained ImageNet models

Downloa the pre-trained ImageNet models from https://drive.google.com/drive/folders/0B1_fAEgxdnvJSmF3YUlZcHFqWTQ or download from https://drive.google.com/drive/folders/1FV6ZOHOxLMQjE4ujTNOObI7lN8USH0v_?usp=sharing and put in in the data/imagenet_weights and rename it vgg16.pth. The folder has the following form.

$ data/imagenet_weights/vgg16.pth
$ data/imagenet_weights/res50.pth

Download the Selective Search proposals for PASCAL VOC 2007

Download it from: https://dl.dropboxusercontent.com/s/orrt7o6bp6ae0tc/selective_search_data.tgz and unzip it and the final folder has the following form

$ data/selective_search_data/voc_2007_train.mat
$ data/selective_search_data/voc_2007_test.mat
$ data/selective_search_data/voc_2007_trainval.mat

Train your own model

For vgg16 backbone, we can train the model using the following commands

./experiments/scripts/train_faster_rcnn.sh 0 pascal_voc vgg16

And for test, we can using the following commands

./experiments/scripts/test_faster_rcnn.sh 0 pascal_voc vgg16

Visualizing some detection results

I have pretrained MLEM_pytorch model on PASCAL VOC 2007 based on vgg16 backbone and you can download it from https://drive.google.com/drive/folders/1FV6ZOHOxLMQjE4ujTNOObI7lN8USH0v_?usp=sharing and put it in the folder output vgg16/voc_2007_trainval/default/vgg16_MELM.pth and run the following commands.

cd pytorch_MELM
python ./tools/demo.py --net vgg16 --dataset pascal_voc

Also you can visualize training and validation curve.

tensorboard --logdir tensorboard/vgg16/voc_2007_trainval/