Your missions within this internship are to: • Study state-of-the-art methods of Open Set Object Detection (OSOD) as well as Visual Language Models (VLM) in the context of Open World containing both known and unknown objects; • Design an object detector aware of the existence of the unknown; • Evaluate the proposed method on recent OSOD benchmarks and compare to the state of the art; • Challenge these methods by applying them to new contexts (e.g. aerial images); • If relevant, submit your contributions to an international conference or workshop for publication.