# SSD: Single Shot MultiBox Object Detector, in PyTorch
A [PyTorch](http://pytorch.org/) implementation of [Single Shot MultiBox Detector](http://arxiv.org/abs/1512.02325) from the 2016 paper by Wei Liu, Dragomir Anguelov, Dumitru Erhan, Christian Szegedy, Scott Reed, Cheng-Yang, and Alexander C. Berg. The official and original Caffe code can be found [here](https://github.com/weiliu89/caffe/tree/ssd).
<img align="right" src= "https://github.com/amdegroot/ssd.pytorch/blob/master/doc/ssd.png" height = 400/>
### Table of Contents
- <a href='#installation'>Installation</a>
- <a href='#datasets'>Datasets</a>
- <a href='#training-ssd'>Train</a>
- <a href='#evaluation'>Evaluate</a>
- <a href='#performance'>Performance</a>
- <a href='#demos'>Demos</a>
- <a href='#todo'>Future Work</a>
- <a href='#references'>Reference</a>
## Installation
- Install [PyTorch](http://pytorch.org/) by selecting your environment on the website and running the appropriate command.
- Clone this repository.
* Note: We currently only support Python 3+.
- Then download the dataset by following the [instructions](#datasets) below.
- We now support [Visdom](https://github.com/facebookresearch/visdom) for real-time loss visualization during training!
* To use Visdom in the browser:
```Shell
# First install Python server and client
pip install visdom
# Start the server (probably in a screen or tmux)
python -m visdom.server
```
* Then (during training) navigate to http://localhost:8097/ (see the Train section below for training details).
- Note: For training, we currently support [VOC](http://host.robots.ox.ac.uk/pascal/VOC/) and [COCO](http://mscoco.org/), and aim to add [ImageNet](http://www.image-net.org/) support soon.
## Datasets
To make things easy, we provide bash scripts to handle the dataset downloads and setup for you. We also provide simple dataset loaders that inherit `torch.utils.data.Dataset`, making them fully compatible with the `torchvision.datasets` [API](http://pytorch.org/docs/torchvision/datasets.html).
### COCO
Microsoft COCO: Common Objects in Context
##### Download COCO 2014
```Shell
# specify a directory for dataset to be downloaded into, else default is ~/data/
sh data/scripts/COCO2014.sh
```
### VOC Dataset
PASCAL VOC: Visual Object Classes
##### Download VOC2007 trainval & test
```Shell
# specify a directory for dataset to be downloaded into, else default is ~/data/
sh data/scripts/VOC2007.sh # <directory>
```
##### Download VOC2012 trainval
```Shell
# specify a directory for dataset to be downloaded into, else default is ~/data/
sh data/scripts/VOC2012.sh # <directory>
```
## Training SSD
- First download the fc-reduced [VGG-16](https://arxiv.org/abs/1409.1556) PyTorch base network weights at: https://s3.amazonaws.com/amdegroot-models/vgg16_reducedfc.pth
- By default, we assume you have downloaded the file in the `ssd.pytorch/weights` dir:
```Shell
mkdir weights
cd weights
wget https://s3.amazonaws.com/amdegroot-models/vgg16_reducedfc.pth
```
- To train SSD using the train script simply specify the parameters listed in `train.py` as a flag or manually change them.
```Shell
python train.py
```
- Note:
* For training, an NVIDIA GPU is strongly recommended for speed.
* For instructions on Visdom usage/installation, see the <a href='#installation'>Installation</a> section.
* You can pick-up training from a checkpoint by specifying the path as one of the training parameters (again, see `train.py` for options)
## Evaluation
To evaluate a trained network:
```Shell
python eval.py
```
You can specify the parameters listed in the `eval.py` file by flagging them or manually changing them.
<img align="left" src= "https://github.com/amdegroot/ssd.pytorch/blob/master/doc/detection_examples.png">
## Performance
#### VOC2007 Test
##### mAP
| Original | Converted weiliu89 weights | From scratch w/o data aug | From scratch w/ data aug |
|:-:|:-:|:-:|:-:|
| 77.2 % | 77.26 % | 58.12% | 77.43 % |
##### FPS
**GTX 1060:** ~45.45 FPS
## Demos
### Use a pre-trained SSD network for detection
#### Download a pre-trained network
- We are trying to provide PyTorch `state_dicts` (dict of weight tensors) of the latest SSD model definitions trained on different datasets.
- Currently, we provide the following PyTorch models:
* SSD300 trained on VOC0712 (newest PyTorch weights)
- https://s3.amazonaws.com/amdegroot-models/ssd300_mAP_77.43_v2.pth
* SSD300 trained on VOC0712 (original Caffe weights)
- https://s3.amazonaws.com/amdegroot-models/ssd_300_VOC0712.pth
- Our goal is to reproduce this table from the [original paper](http://arxiv.org/abs/1512.02325)
<p align="left">
<img src="http://www.cs.unc.edu/~wliu/papers/ssd_results.png" alt="SSD results on multiple datasets" width="800px"></p>
### Try the demo notebook
- Make sure you have [jupyter notebook](http://jupyter.readthedocs.io/en/latest/install.html) installed.
- Two alternatives for installing jupyter notebook:
1. If you installed PyTorch with [conda](https://www.continuum.io/downloads) (recommended), then you should already have it. (Just navigate to the ssd.pytorch cloned repo and run):
`jupyter notebook`
2. If using [pip](https://pypi.python.org/pypi/pip):
```Shell
# make sure pip is upgraded
pip3 install --upgrade pip
# install jupyter notebook
pip install jupyter
# Run this inside ssd.pytorch
jupyter notebook
```
- Now navigate to `demo/demo.ipynb` at http://localhost:8888 (by default) and have at it!
### Try the webcam demo
- Works on CPU (may have to tweak `cv2.waitkey` for optimal fps) or on an NVIDIA GPU
- This demo currently requires opencv2+ w/ python bindings and an onboard webcam
* You can change the default webcam in `demo/live.py`
- Install the [imutils](https://github.com/jrosebr1/imutils) package to leverage multi-threading on CPU:
* `pip install imutils`
- Running `python -m demo.live` opens the webcam and begins detecting!
## TODO
We have accumulated the following to-do list, which we hope to complete in the near future
- Still to come:
* [x] Support for the MS COCO dataset
* [ ] Support for SSD512 training and testing
* [ ] Support for training on custom datasets
## Authors
* [**Max deGroot**](https://github.com/amdegroot)
* [**Ellis Brown**](http://github.com/ellisbrown)
***Note:*** Unfortunately, this is just a hobby of ours and not a full-time job, so we'll do our best to keep things up to date, but no guarantees. That being said, thanks to everyone for your continued help and feedback as it is really appreciated. We will try to address everything as soon as possible.
## References
- Wei Liu, et al. "SSD: Single Shot MultiBox Detector." [ECCV2016]((http://arxiv.org/abs/1512.02325)).
- [Original Implementation (CAFFE)](https://github.com/weiliu89/caffe/tree/ssd)
- A huge thank you to [Alex Koltun](https://github.com/alexkoltun) and his team at [Webyclip](http://www.webyclip.com) for their help in finishing the data augmentation portion.
- A list of other great SSD ports that were sources of inspiration (especially the Chainer repo):
* [Chainer](https://github.com/Hakuyume/chainer-ssd), [Keras](https://github.com/rykov8/ssd_keras), [MXNet](https://github.com/zhreshold/mxnet-ssd), [Tensorflow](https://github.com/balancap/SSD-Tensorflow)
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大学生创新创业训练项目-矿井救援机器人.zip
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大学生创新创业训练项目-矿井救援机器人.zip (85个子文件)
大学生创新创业训练项目-矿井救援机器人
.gitattributes 66B
WebAPP_saver.zip 10.74MB
docs
申报书-计算机学院--创新训练项目.pdf 900KB
结项时所填.pdf 697KB
中期报告-矿井救援机器人.pdf 299KB
矿井救援机器人--答辩--20190315_03.pdf 3.71MB
ImagesAndVideos
images
电机驱动.jpg 3.94MB
摄像头.jpg 2.7MB
正面.jpg 3.19MB
主板-正面.jpg 3.03MB
主板-背面.jpg 3.57MB
底部.jpg 4.44MB
人体红外传感器.jpg 2.3MB
侧面.jpg 3.21MB
马达.jpg 2.72MB
俯视.jpg 3.17MB
后视.jpg 2.61MB
videos
机器人-超声波.mp4 7.1MB
机器人-红外感应障碍物.mp4 26.94MB
摄像头-夜里拍的-2.mp4 3.99MB
机器人-转弯.mp4 41.81MB
摄像头-夜里拍的-1.mp4 4.05MB
机器人-直线行进.mp4 5.97MB
机器人-回头调车.mp4 8.56MB
pi_codes
others
try.py 605B
ras.py 4KB
ras_origin.py 2KB
duoji_shexiangtou.py 605B
hongwai_ganyingren.py 780B
control
main.py 735B
dates
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ops
__init__.py 0B
ras.py 3KB
duoji_shexiangtou.py 678B
hongwai_ganyingren.py 780B
config
__init__.py 0B
ssd_pytorch
layers
__init__.py 48B
modules
__init__.py 105B
multibox_loss.py.bak 5KB
multibox_loss.py 5KB
multibox_loss - 副本.py 5KB
l2norm.py 759B
box_utils.py 9KB
functions
__init__.py 97B
prior_box.py 2KB
detection.py 3KB
eval.py 16KB
.gitattributes 110B
doc
detection_example.png 365KB
detection_examples.png 1.96MB
SSD.jpg 47KB
ssd.png 71KB
detection_example2.png 319KB
data
__init__.py 1KB
coco_labels.txt 1KB
voc0712.py 6KB
coco.py 7KB
voc0712.py.bak 6KB
VOCDevkit
readme.md 21B
coco
coco_labels.txt 1KB
example.jpg 137KB
config.py 1KB
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VOC2007.sh 971B
train2014.zip 6KB
VOC2012.sh 765B
COCO2014.sh 2KB
VOC2012.sh.bak 733B
LICENSE 1KB
demo
__init__.py 0B
live.py 3KB
demo.ipynb 755KB
utils
__init__.py 42B
augmentations.py 13KB
evalvoc1
test.txt 0B
train.py.bak 9KB
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ssd.py 7KB
train.py 9KB
test.py 4KB
README.md 7KB
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README.md 69B
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