How do I label images faster I have around 1600 images extracted from videos shot at night time. I am labeling each image and trying to be as accurate as I can in assigning bounding boxes. I am labeling vehicles and traffic light/traffic signs. This is very time-consuming, I am wondering if someone have experience or done this before and can advise me on some automated methods of labeling night time images. The objects of interests are usually appear to be quite small. An example labelled image is given below
On the internet, LabelImg is pretty popular. It's a Python program that you can use to automatize drawing of bounding boxes. Alternatively there is HyperLabel, on their website they say it's free so it.s worth to give it a try.

The options available are so many I completely get lost while searching. I suggest you to read this nice review of tools first.

With these tools, labeling 1600 images is not going to be a problem IMHO. Good luck.