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PyTorch-Onnx-Tensorrt

A set of tool which would make your life easier with Tensorrt and Onnxruntime for Yolov3.

Requirements

  1. Python 3
  2. OpenCV
  3. PyTorch
  4. Onnx 1.4.1
  5. Onnxruntime
  6. Tensorrt

I would Highly Recommend setting up a Nvidia Deepstream/Tensorrt Docker for these operations.

Downloading YoloV3 Configs and Weights

mkdir cfg
cd cfg 
wget https://raw.githubusercontent.com/pjreddie/darknet/f86901f6177dfc6116360a13cc06ab680e0c86b0/cfg/yolov3.cfg

mkdir weights
cd weights
wget https://pjreddie.com/media/files/yolov3.weights

Editing Config File

Inorder to Run the model in Pytorch or creating Onnx / Tensorrt File for different Input image Sizes ( 416, 608, 960 etc), you need to edit the Batch Size and Input image size in the config file - net info section.

batch=1
width=416
height=416

Running the detector Using Pytorch

python3 detect.py --cfg cfg/yolov3.cfg --weights weights/yolov3.weights

Generating the Onnx File

python3 create_onnx.py --reso 416

Running the detector Using ONNX

python3 detect.py --use_onnx True --onnx_file yolov3.onnx

Generating the Tensorrt File

python3 create_trt_engine.py --onnx_file yolov3.onnx

Creating the Tensorrt engine takes some time. So have some patience.