We are trying to build a deep learning model to detect helmet use of motorbike riders. To this purpose, we have collected 1,000 video clips (10 second duration) to annotate. You are required to annotate all motorbikes as well as riders in each video. You will work on a video annotation tool to annotate these videos. The workload depends on the number of motorbikes appear in a video clip. I have annotated more than 200 video clips, the average speed is 3~4 videos clips per hour. The screenshot of the interface is attached.