{"url":"/method/piou-loss","slug":"piou-loss","name":"PIoU Loss","full_name":"PIoU Loss","full_name_withheld":false,"description_markdown":"**PIoU Loss** is a loss function for oriented object detection which is formulated to exploit both the angle and IoU for accurate oriented bounding box regression. The PIoU loss is derived from IoU metric with a pixel-wise form.","description_state":"present","introduced_year":null,"introduced_by":{"title":"PIoU Loss: Towards Accurate Oriented Object Detection in Complex Environments","paper":"/paper/piou-loss-towards-accurate-oriented-object","first_author":"Zhiming Chen","n_authors":7,"url_abs":null,"archive_paper_url":"https://paperswithcode.com/paper/piou-loss-towards-accurate-oriented-object"},"source":{"url":"https://arxiv.org/abs/2007.09584v1","title":"PIoU Loss: Towards Accurate Oriented Object Detection in Complex Environments","url_on_a_paper_host":true},"code_snippet_url":null,"code_snippet_url_on_a_code_host":false,"categories":[{"area":"General","area_id":"general","collection":"Loss Functions","url":"/methods/category/loss-functions","pwc_aliases":[]}],"n_papers_tagged":1,"archive_num_papers":1,"papers_newest_first":[{"paper":"/paper/piou-loss-towards-accurate-oriented-object","title":"PIoU Loss: Towards Accurate Oriented Object Detection in Complex Environments","date":"2020-07-19","arxiv_id":"2007.09584","n_code_links":1,"syntology":{"ran":1,"of":1,"unverified":0,"pointer_only":0}}],"papers_shown":1,"tasks":[{"task":"/task/object-detection","name":"Object Detection","papers":1},{"task":"/task/object-detection-in-aerial-images","name":"Object Detection In Aerial Images","papers":1},{"task":"/task/one-stage-anchor-free-oriented-object-1","name":"One-stage Anchor-free Oriented Object Detection","papers":1},{"task":"/task/oriented-object-detection","name":"Oriented Object Detection","papers":1},{"task":"/task/object-detection-1","name":"object-detection","papers":1}],"tasks_shown":5,"n_tasks":5,"usage_by_year":[{"year":"2020","papers":1}],"row_source":"methods_table","archive":{"source":"pwc-archive (Hugging Face), CC BY-SA 4.0","snapshot":"2025-07-28","archive_url":"https://paperswithcode.com/method/piou-loss"},"syntology_read_at":"2026-09-25T09:33:49+00:00"}