What is an image annotation? An introduction to image annotation to machine learning Learning Image Annotation? Image annotation refers to the practice of labeling images in order to train AI or machine-learning models. It typically involves humans employing an image annotation tool to label images, or to tag pertinent information, like by assigning appropriate classes to various entities within an image. The resultant data, which is known as structured data, is fed to a machine-learning algorithm, which is usually considered to be the process of training a model. You can, for instance, ask your annotation experts to mark vehicles in a certain group of photos. The data resulting from this can assist in training a model that is able to identify and recognize vehicles and distinguish them from traffic lights, pedestrians or any other obstacles that could be in the road so that you can navigate without risk. Automated driving is an illustration of how annotation on images can help comput...