1. An apparatus, the apparatus comprising: a key joint detector to analyze an image to detect key joint data regarding respective plural key joints of an object in the image; a database to store respective information of plural object poses representing potential poses of one or more objects; and a pose retriever to retrieve and output from the database a most likely pose, of the plural object poses, based on the detected key joint data, with the most likely pose having a determined highest similarity to an actual pose of the object.