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Method Efficiently detect and segment document regions in preview frames from captured camera's smartphones. We believe an efficient capture process should be able to: (1)detect and segment the relevant document object during the preview phase; (3)(2)assess the quality of the capture conditions and help the user improve them; optionally(4) trigger the capture at the perfect moment. It's focused on the first step of this process: efficiently detect and segment document regions, as illustrated by following video showing the ideal output for the preview phase of some acquisition session. the input will be a set of videoclips containing a document from a predefined set, and the output should be an xml file containing the quadrilateral coordinates in which we can find the document per each frame of the video. Based Project In Challeng-1 ICDAR Smartdoc: [login to view URL]