██╗ ██╗ ██████╗ ██╗ █████╗ ██████╗████████╗
╚██╗ ██╔╝██╔═══██╗██║ ██╔══██╗██╔════╝╚══██╔══╝
╚████╔╝ ██║ ██║██║ ███████║██║ ██║
╚██╔╝ ██║ ██║██║ ██╔══██║██║ ██║
██║ ╚██████╔╝███████╗██║ ██║╚██████╗ ██║
╚═╝ ╚═════╝ ╚══════╝╚═╝ ╚═╝ ╚═════╝ ╚═╝
A simple, fully convolutional model for real-time instance segmentation. This is the code for our paper, and for the forseeable future is still in development.
Here's a look at our current results for our base model (33 fps on a Titan Xp and 29.8 mAP on COCO's test-dev):
- Set up a Python3 environment.
- Install Pytorch 1.0.1 (or higher) and TorchVision.
- Install some other packages:
# Cython needs to be installed before pycocotools pip install cython pip install opencv-python pillow pycocotools matplotlib - Clone this repository and enter it:
git clone https://github.com/dbolya/yolact.git cd yolact - If you'd like to train YOLACT, download the COCO dataset and the 2014/2017 annotations. Note that this script will take a while and dump 21gb of files into
./data/coco.sh data/scripts/COCO.sh
- If you'd like to evaluate YOLACT on
test-dev, downloadtest-devwith this script.sh data/scripts/COCO_test.sh
As of April 5th, 2019 here are our latest models along with their FPS on a Titan Xp and mAP on test-dev:
| Image Size | Backbone | FPS | mAP | Weights | |
|---|---|---|---|---|---|
| 550 | Resnet50-FPN | 42.5 | 28.2 | yolact_resnet50_54_800000.pth | Mirror |
| 550 | Darknet53-FPN | 40.0 | 28.7 | yolact_darknet53_54_800000.pth | Mirror |
| 550 | Resnet101-FPN | 33.0 | 29.8 | yolact_base_54_800000.pth | Mirror |
| 700 | Resnet101-FPN | 23.6 | 31.2 | yolact_im700_54_800000.pth | Mirror |
To evalute the model, put the corresponding weights file in the ./weights directory and run one of the following commands.
# Quantitatively evaluate a trained model on the entire validation set. Make sure you have COCO downloaded as above.
# This should get 29.92 validation mask mAP last time I checked.
python eval.py --trained_model=weights/yolact_base_54_800000.pth
# Output a COCOEval json to submit to the website or to use the run_coco_eval.py script.
# This command will create './results/bbox_detections.json' and './results/mask_detections.json' for detection and instance segmentation respectively.
python eval.py --trained_model=weights/yolact_base_54_800000.pth --output_coco_json
# You can run COCOEval on the files created in the previous command. The performance should match my implementation in eval.py.
python run_coco_eval.py
# To output a coco json file for test-dev, make sure you have test-dev downloaded from above and go
python eval.py --trained_model=weights/yolact_base_54_800000.pth --output_coco_json --dataset=coco2017_testdev_dataset# Display qualitative results on COCO. From here on I'll use a confidence threshold of 0.3.
python eval.py --trained_model=weights/yolact_base_54_800000.pth --score_threshold=0.3 --top_k=100 --display# Run just the raw model on the first 1k images of the validation set
python eval.py --trained_model=weights/yolact_base_54_800000.pth --benchmark --max_images=1000# Display qualitative results on the specified image.
python eval.py --trained_model=weights/yolact_base_54_800000.pth --score_threshold=0.3 --top_k=100 --image=my_image.png
# Process an image and save it to another file.
python eval.py --trained_model=weights/yolact_base_54_800000.pth --score_threshold=0.3 --top_k=100 --image=input_image.png:output_image.png
# Process a whole folder of images.
python eval.py --trained_model=weights/yolact_base_54_800000.pth --score_threshold=0.3 --top_k=100 --images=path/to/input/folder:path/to/output/folder# Display a video in real-time. "--video_multiframe" will process that many frames at once for improved performance.
python eval.py --trained_model=weights/yolact_base_54_800000.pth --score_threshold=0.3 --top_k=100 --video_multiframe=2 --video=my_video.mp4
# Display a webcam feed in real-time. If you have multiple webcams pass the index of the webcam you want instead of 0.
python eval.py --trained_model=weights/yolact_base_54_800000.pth --score_threshold=0.3 --top_k=100 --video_multiframe=2 --video=0
# Process a video and save it to another file. This is unoptimized.
python eval.py --trained_model=weights/yolact_base_54_800000.pth --score_threshold=0.3 --top_k=100 --video=input_video.mp4:output_video.mp4As you can tell, eval.py can do a ton of stuff. Run the --help command to see everything it can do.
python eval.py --helpBy default, we Train on COCO. Make sure to download the entire dataset using the commands above.
- To train, grab an imagenet-pretrained model and put it in
./weights. - Run one of the training commands below.
- Note that you can press ctrl+c while training and it will save an
*_interrupt.pthfile at the current iteration. - All weights are saved in the
./weightsdirectory by default with the file name<config>_<epoch>_<iter>.pth.
- Note that you can press ctrl+c while training and it will save an
# Trains using the base config with a batch size of 8 (the default).
python train.py --config=yolact_base_config
# Trains yolact_base_config with a batch_size of 5. For the 550px models, 1 batch takes up around 1.5 gigs of VRAM, so specify accordingly.
python train.py --config=yolact_base_config --batch_size=5
# Resume training yolact_base with a specific weight file and start from the iteration specified in the weight file's name.
python train.py --config=yolact_base_config --resume=weights/yolact_base_10_32100.pth --start_iter=-1
# Use the help option to see a description of all available command line arguments
python train.py --helpYou can also train on your own dataset by following these steps:
- Create a COCO-style Object Detection JSON annotation file for your dataset. The specification for this can be found here. Note that we don't use some fields, so the following may be omitted:
infoliscense- Under
image:license, flickr_url, coco_url, date_captured categories(we use our own format for categories, see below)
- Create a definition for your dataset under
dataset_baseindata/config.py(see the comments indataset_basefor an explanation of each field):
my_custom_dataset = dataset_base.copy({
'name': 'My Dataset',
'train_images': 'path_to_training_images',
'train_info': 'path_to_training_annotation',
'valid_images': 'path_to_validation_images',
'valid_info': 'path_to_validation_annotation',
'has_gt': True,
'class_names': ('my_class_id_1', 'my_class_id_2', 'my_class_id_3', ...)
})- A couple things to note:
- Class IDs in the annotation file should start at 1 and increase sequentially on the order of
class_names. If this isn't the case for your annotation file (like in COCO), see the fieldlabel_mapindataset_base. - If you do not want to create a validation split, use the same image path and annotations file for validation. By default (see
python train.py --help),train.pywill output validation mAP for the first 5000 images in the dataset every 2 epochs.
- Class IDs in the annotation file should start at 1 and increase sequentially on the order of
- Finally, in
yolact_base_configin the same file, change the value for'dataset'to'my_custom_dataset'or whatever you named the config object above. Then you can use any of the training commands in the previous section.
If you use YOLACT or this code base in your work, please cite
@article{bolya-arxiv2019,
author = {Daniel Bolya and Chong Zhou and Fanyi Xiao and Yong Jae Lee},
title = {YOLACT: {Real-time} Instance Segmentation},
journal = {arXiv},
year = {2019},
}
For questions about our paper or code, please contact Daniel Bolya.