tensorflow-yolov4-tflite

Yolo V4 Implemented in Tensorflow 2.0. Convert .weights to .tflite format for tensorflow lite.

Download yolov4.weights file: https://drive.google.com/open?id=1cewMfusmPjYWbrnuJRuKhPMwRe_b9PaT

Prerequisites

• Tensorflow 2.1.0
• tensorflow_addons 0.9.1 (required for mish activation)

Performance

Demo

# yolov4
python detect.py --weights ./data/yolov4.weights --framework tf --size 608 --image ./data/kite.jpg

# yolov4 tflite
python detect.py --weights ./data/yolov4-int8.tflite --framework tflite --size 416 --image ./data/kite.jpg

Output

Yolov4 original weight

Yolov4 tflite int8

Convert to tflite

# yolov4
python convert_tflite.py --weights ./data/yolov4.weights --output ./data/yolov4.tflite

# yolov4 quantize int8
python convert_tflite.py --weights ./data/yolov4.tf --output ./data/yolov4-int8.tflite --quantize_mode int8

# yolov4 quantize float16
python convert_tflite.py --weights ./data/yolov4.tf --output ./data/yolov4-fp16.tflite --quantize_mode float16

Evaluate on COCO 2017 Dataset

# preprocess coco dataset
cd data
mkdir dataset
cd ..
cd scripts
python coco_convert.py --input COCO_ANOTATION_DATA_PATH --output val2017.pkl
python coco_annotation.py --coco_path COCO_DATA_PATH 
cd ..

# evaluate yolov4 model
python evaluate.py --weights ./data/yolov4.weights
cd mAP/extra
python remove_space.py
cd ..
python main.py --output results_yolov4_tf

TODO

• Training code
• greedy NMS
• Update scale xy
• ciou
• Mosaic data augmentation
• Mish activation
• yolov4 tflite version
• yolov4 in8 tflite version for mobile

References

• YOLOv4: Optimal Speed and Accuracy of Object Detection YOLOv4.
• darknet

My project is inspired by these previous fantastic YOLOv3 implementations:

• Yolov3 tensorflow
• Yolov3 tf2