R-FCN: Object Detection via Region-based Fully Convolutional Networks
py-R-FCN now supports both joint training and alternative optimization.
The official R-FCN code (written in MATLAB) is available here.
py-R-FCN is modified from the offcial R-FCN implementation and py-faster-rcnn code, and the usage is quite similar to py-faster-rcnn.
There are slight differences between py-R-FCN and the official R-FCN implementation.
- py-R-FCN is ~10% slower at test-time, because some operations execute on the CPU in Python layers (e.g., 90ms / image vs. 99ms / image for ResNet-50)
- py-R-FCN supports both join training and alternative optimization of R-FCN.
The original py-faster-rcnn uses class-aware bounding box regression. However, R-FCN use class-agnostic bounding box regression to reduce model complexity. So I add a configuration AGNOSTIC into fast_rcnn/config.py, and the default value is False. You should set it to True both on train and test phase if you want to use class-agnostic training and test.
OHEM need all rois to select the hard examples, so I changed the sample strategy, set BATCH_SIZE: -1 for OHEM, otherwise OHEM would not take effect.
In conclusion:
AGNOSTIC: True is required for class-agnostic bounding box regression
BATCH_SIZE: -1 is required for OHEM
And I've already provided two configuration files for you(w/ OHEM and w/o OHEM) under experiments/cfgs folder, you could just use them and needn't change anything.
R-FCN is released under the MIT License (refer to the LICENSE file for details).
If you find R-FCN useful in your research, please consider citing:
@article{dai16rfcn,
Author = {Jifeng Dai, Yi Li, Kaiming He, Jian Sun},
Title = {{R-FCN}: Object Detection via Region-based Fully Convolutional Networks},
Journal = {arXiv preprint arXiv:1605.06409},
Year = {2016}
}
| training data | test data | mAP@0.5 | time/img (Titian X)
-------------------|:-------------------:|:---------------------:|:-----:|:------------------:| R-FCN, ResNet-50 | VOC 07+12 trainval | VOC 07 test | 77.6% | 0.099sec | R-FCN, ResNet-101 | VOC 07+12 trainval | VOC 07 test | 79.4% | 0.136sec |
| training data | test data | mAP@[0.5:0.95] | time/img (Titian X)
-------------------|:-------------------:|:---------------------:|:-----:|:------------------:| R-FCN, ResNet-101 | COCO 2014 train | COCO 2014 val | 27.9% | 0.0138sec |
| training data | test data | mAP@0.5 | time/img (Titian X)
-------------------|:-------------------:|:---------------------:|:-----:|:------------------:| R-FCN, ResNet-50 | VOC 07+12 trainval | VOC 07 test | 77.4%| 0.099sec | R-FCN, ResNet-101 | VOC 07+12 trainval | VOC 07 test | 79.4%| 0.136sec |
VOC 0712 model (trained on VOC07+12 trainval) of R-FCN
COCO model (trained on 2014 train) of R-FCN
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ImportantPlease use the Microsoft-version Caffe(@commit 1a2be8e), this Caffe supports R-FCN layer, and the prototxt in this repository follows the Microsoft-version Caffe's layer name. You need to put the Caffe root folder under py-R-FCN folder, just like what py-faster-rcnn does. -
Requirements for
Caffeandpycaffe(see: Caffe installation instructions)
Note: Caffe must be built with support for Python layers!
# In your Makefile.config, make sure to have this line uncommented
WITH_PYTHON_LAYER := 1
# Unrelatedly, it's also recommended that you use CUDNN
USE_CUDNN := 1- Python packages you might not have:
cython,opencv-python,easydict - [Optional] MATLAB is required for official PASCAL VOC evaluation only. The code now includes unofficial Python evaluation code.
Any NVIDIA GPU with 6GB or larger memory is OK(4GB is enough for ResNet-50).
- Clone the R-FCN repository
git clone https://github.com/Orpine/py-R-FCN.gitWe'll call the directory that you cloned R-FCN into RFCN_ROOT
- Clone the Caffe repository
cd $RFCN_ROOT
git clone https://github.com/Microsoft/caffe.git[optional]
cd caffe
git reset --hard 1a2be8e(I only test on this commit, and I'm not sure whether this Caffe is still compatible with the prototxt in this repository in the future)
If you followed the above instruction, python code will add $RFCN_ROOT/caffe/python to PYTHONPATH automatically, otherwise you need to add $CAFFE_ROOT/python by your own, you could check $RFCN_ROOT/tools/_init_paths.py for more details.
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Build the Cython modules
cd $RFCN_ROOT/lib make
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Build Caffe and pycaffe
cd $RFCN_ROOT/caffe # Now follow the Caffe installation instructions here: # http://caffe.berkeleyvision.org/installation.html # If you're experienced with Caffe and have all of the requirements installed # and your Makefile.config in place, then simply do: make -j8 && make pycaffe
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To use demo you need to download the pretrained R-FCN model, please download the model manually from OneDrive, and put it under
$RFCN/data.Make sure it looks like this:
$RFCN/data/rfcn_models/resnet50_rfcn_final.caffemodel $RFCN/data/rfcn_models/resnet101_rfcn_final.caffemodel
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To run the demo
$RFCN/tools/demo_rfcn.py
The demo performs detection using a ResNet-101 network trained for detection on PASCAL VOC 2007.
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Download the training, validation, test data and VOCdevkit
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 wget http://host.robots.ox.ac.uk/pascal/VOC/voc2012/VOCtrainval_11-May-2012.tar
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Extract all of these tars into one directory named
VOCdevkittar xvf VOCtrainval_06-Nov-2007.tar tar xvf VOCtest_06-Nov-2007.tar tar xvf VOCdevkit_08-Jun-2007.tar tar xvf VOCtrainval_11-May-2012.tar
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It should have this basic structure
$VOCdevkit/ # development kit $VOCdevkit/VOCcode/ # VOC utility code $VOCdevkit/VOC2007 # image sets, annotations, etc. $VOCdevkit/VOC2012 # image sets, annotations, etc. # ... and several other directories ...
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Since py-faster-rcnn does not support multiple training datasets, we need to merge VOC 2007 data and VOC 2012 data manually. Just make a new directory named
VOC0712, put all subfolders exceptImageSetsinVOC2007andVOC2012intoVOC0712(you'll merge some folders). I provide a merged-versionImageSetsfolder for you, please put it intoVOCdevkit/VOC0712/. -
Then the folder structure should look like this
$VOCdevkit/ # development kit
$VOCdevkit/VOCcode/ # VOC utility code
$VOCdevkit/VOC2007 # image sets, annotations, etc.
$VOCdevkit/VOC2012 # image sets, annotations, etc.
$VOCdevkit/VOC0712 # you just created this folder
# ... and several other directories ...-
Create symlinks for the PASCAL VOC dataset
cd $RFCN_ROOT/data ln -s $VOCdevkit VOCdevkit0712
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Please download ImageNet-pre-trained ResNet-50 and ResNet-100 model manually, and put them into
$RFCN_ROOT/data/imagenet_models -
Then everything is done, you could train your own model.
To train and test a R-FCN detector using the approximate joint training method, use experiments/scripts/rfcn_end2end.sh.
Output is written underneath $RFCN_ROOT/output.
To train and test a R-FCN detector using the approximate joint training method with OHEM, use experiments/scripts/rfcn_end2end_ohem.sh.
Output is written underneath $RFCN_ROOT/output.
To train and test a R-FCN detector using the alternative optimization method with OHEM, use experiments/scripts/rfcn_alt_opt_5stage_ohem.sh.
Output is written underneath $RFCN_ROOT/output
cd $RFCN_ROOT
./experiments/scripts/rfcn_end2end[_ohem].sh [GPU_ID] [NET] [DATASET] [--set ...]
# GPU_ID is the GPU you want to train on
# NET in {ResNet-50, ResNet-101} is the network arch to use
# DATASET in {pascal_voc, coco} is the dataset to use(I only tested on pascal_voc)
# --set ... allows you to specify fast_rcnn.config options, e.g.
# --set EXP_DIR seed_rng1701 RNG_SEED 1701Trained R-FCN networks are saved under:
output/<experiment directory>/<dataset name>/
Test outputs are saved under:
output/<experiment directory>/<dataset name>/<network snapshot name>/
Tested on Ubuntu 14.04 with a Titan X / GTX1080 GPU and Intel Xeon CPU E5-2620 v2 @ 2.10GHz
py-faster-rcnn code can also work properly, but I do not add any other feature(such as ResNet and OHEM).