annotation file for image with no object of interest

[dlin95123]

I have an object detection project of two classes (person, animal), and I want to use darknet/yolov4 for it. The images can contain person(s) and/or animal(s), or none of these classes. For example, an image may just contain cars and I don't need to detect these cars.

My question is how do I handle the annotation file for this image that contains no object of interest? Do I create an annotation file for it and its content is empty?

[stephanecharette]

See https://www.ccoderun.ca/programming/darknet_faq/#negative_samples and https://www.ccoderun.ca/programming/darknet_faq/#image_markup

[dlin95123]

Thank you!