{"about":{"site":"https://codewithpapers.app","non_affiliation":"Code with Papers and Syntology are not affiliated with, endorsed by, or sponsored by Papers with Code, Meta, or the pwc-archive mirror.","licence":"CC BY-SA 4.0","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","attribution":"https://codewithpapers.app/attribution","modified":"archive material modified by Syntology; see the attribution page"},"url":"/paper/designing-effective-inter-pixel-information","title":"Information-Flow Matting","arxiv_id":"1707.05055","date":"2017-07-17","proceeding":"CVPR 2017 7","authors":["Yağız Aksoy","Tunç Ozan Aydın","Marc Pollefeys"],"abstract":"We present a novel, purely affinity-based natural image matting algorithm.\nOur method relies on carefully defined pixel-to-pixel connections that enable\neffective use of information available in the image. We control the information\nflow from the known-opacity regions into the unknown region, as well as within\nthe unknown region itself, by utilizing multiple definitions of pixel\naffinities. Among other forms of information flow, we introduce color-mixture\nflow, which builds upon local linear embedding and effectively encapsulates the\nrelation between different pixel opacities. Our resulting novel linear system\nformulation can be solved in closed-form and is robust against several\nfundamental challenges of natural matting such as holes and remote intricate\nstructures. While our method is primarily designed as a standalone matting\ntool, we show that it can also be used for regularizing mattes obtained by\nsampling-based methods. The formulation is also extended to layer color\nestimation and we show that the use of multiple channels of flow increases the\nlayer color quality. We also demonstrate our performance in green-screen keying\nand analyze the characteristics of the utilized affinities.","url_abs":"http://arxiv.org/abs/1707.05055v2","url_pdf":"http://arxiv.org/pdf/1707.05055v2.pdf","source":{"archive":"pwc-archive (Hugging Face), CC BY-SA 4.0","snapshot":"2025-07-28","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","row_kind":"abstracts"},"code_links":[{"paper_slug":"designing-effective-inter-pixel-information","repo_url":"https://github.com/yaksoy/AffinityBasedMattingToolbox","is_official":0,"mentioned_in_paper":0,"mentioned_in_github":0,"framework":"none","reach":null}],"tasks":[{"task_slug":"image-matting","task_name":"Image Matting"}],"methods":[],"datasets_introduced":[],"methods_introduced":[],"results":[],"syntology":{"atlas_url":"https://app.syntology.ai/?focus=1707.05055","mcp":null,"developers":"https://syntology.ai/developers"},"arxiv_metadata":null,"syntology_extracted_results":null}