{"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/smash-physics-guided-reconstruction-of","title":"SMASH: Physics-guided Reconstruction of Collisions from Videos","arxiv_id":"1603.08984","date":"2016-03-29","proceeding":null,"authors":["Aron Monszpart","Nils Thuerey","Niloy J. Mitra"],"abstract":"Collision sequences are commonly used in games and entertainment to add drama\nand excitement. Authoring even two body collisions in the real world can be\ndifficult, as one has to get timing and the object trajectories to be correctly\nsynchronized. After tedious trial-and-error iterations, when objects can\nactually be made to collide, then they are difficult to capture in 3D. In\ncontrast, synthetically generating plausible collisions is difficult as it\nrequires adjusting different collision parameters (e.g., object mass ratio,\ncoefficient of restitution, etc.) and appropriate initial parameters. We\npresent SMASH to directly read off appropriate collision parameters directly\nfrom raw input video recordings. Technically we enable this by utilizing laws\nof rigid body collision to regularize the problem of lifting 2D trajectories to\na physically valid 3D reconstruction of the collision. The reconstructed\nsequences can then be modified and combined to easily author novel and\nplausible collisions. We evaluate our system on a range of synthetic scenes and\ndemonstrate the effectiveness of our method by accurately reconstructing\nseveral complex real world collision events.","url_abs":"http://arxiv.org/abs/1603.08984v2","url_pdf":"http://arxiv.org/pdf/1603.08984v2.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":"smash-physics-guided-reconstruction-of","repo_url":"https://github.com/amonszpart/SMASH","is_official":1,"mentioned_in_paper":0,"mentioned_in_github":0,"framework":"none","reach":null}],"tasks":[{"task_slug":"3d-reconstruction","task_name":"3D Reconstruction"},{"task_slug":null,"task_name":"valid"}],"methods":[],"datasets_introduced":[],"methods_introduced":[],"results":[],"syntology":{"atlas_url":null,"mcp":null,"developers":"https://syntology.ai/developers"},"arxiv_metadata":null,"syntology_extracted_results":null}