Resources for Object Detection Implementation from Scratch in Keras

Most of the time we use pre-trained models for object detection in tensorflow-keras. The web is full of such kind of tutorials. 

At the same time, there are certain implementations written from scratch. 

Below I plan to list such resources. 

1. RetinaNet : The official keras tutorial implements RetinaNet using ResNet50. 

https://keras.io/examples/vision/retinanet/

2. Mirza Mujtaba's YOLO implementation: 

https://www.kaggle.com/mirzamujtaba/yolo-object-detection-using-keras