What it is. Yet another implementation of Ultralytics's yolov5, and with modules refactoring to make it available in deployment backends such as libtorch
, onnxruntime
, tvm
and so on.
About the code. Follow the design principle of detr:
object detection should not be more difficult than classification, and should not require complex libraries for training and inference.
yolort
is very simple to implement and experiment with. You like the implementation of torchvision's faster-rcnn, retinanet or detr? You like yolov5? You love yolort
!
- Support exporting to
TorchScript
model. Oct. 8, 2020. - Support inferring with
LibTorch
cpp interface. Oct. 10, 2020. - Add
TorchScript
cpp inference example. Nov. 4, 2020. - Refactor YOLO modules and support dynmaic batching inference. Nov. 16, 2020.
- Support exporting to
ONNX
, and inferring withONNXRuntime
interface. Nov. 17, 2020. - Add graph visualization tools. Nov. 21, 2020.
- Add
TVM
compile and inference notebooks. Feb. 5, 2021.
There are no extra compiled components in yolort
and package dependencies are minimal, so the code is very simple to use.
-
Above all, follow the official instructions to install PyTorch 1.7.0+ and torchvision 0.8.1+
-
Installation via Pip
Simple installation from PyPI
pip install -U yolort
Or from Source
# clone yolort repository locally git clone https://github.com/zhiqwang/yolov5-rt-stack.git cd yolov5-rt-stack # install in editable mode pip install -e .
-
Install pycocotools (for evaluation on COCO):
pip install -U 'git+https://github.com/ppwwyyxx/cocoapi.git#subdirectory=PythonAPI'
-
To read a source of image(s) and detect its objects ๐ฅ
from yolort.models import yolov5s # Load model model = yolov5s(pretrained=True, score_thresh=0.45) model.eval() # Perform inference on an image file predictions = model.predict('bus.jpg') # Perform inference on a list of image files predictions = model.predict(['bus.jpg', 'zidane.jpg'])
The models are also available via torch hub, to load yolov5s
with pretrained weights simply do:
model = torch.hub.load('zhiqwang/yolov5-rt-stack', 'yolov5s', pretrained=True)
The module state of yolort
has some differences comparing to ultralytics/yolov5
. We can load ultralytics's trained model checkpoint with minor changes, and we have converted ultralytics's release v3.1 and v4.0. For example, if you want to convert a yolov5s
(release 4.0) model, you can just run the following script:
from yolort.utils import update_module_state_from_ultralytics
# Update module state from ultralytics
model = update_module_state_from_ultralytics(arch='yolov5s', version='v4.0')
# Save updated module
torch.save(model.state_dict(), 'yolov5s_updated.pt')
We provide a notebook to demonstrate how the model is transformed into torchscript
. And we provide an C++ example of how to infer with the transformed torchscript
model. For details see the GitHub actions.
Now, yolort
can draw the model graph directly, checkout our visualize-jit-models notebook to see how to use and visualize the model graph.
- The implementation of
yolov5
borrow the code from ultralytics. - This repo borrows the architecture design and part of the code from torchvision.
We appreciate all contributions. If you are planning to contribute back bug-fixes, please do so without any further discussion. If you plan to contribute new features, utility functions or extensions, please first open an issue and discuss the feature with us. BTW, leave a ๐ if you liked it, this means a lot to us :)