公开(公告)号：US20200265560A1

公开(公告)日：2020-08-20

申请号：US16866324

申请日：2020-05-04

Applicant: Dropbox, Inc.

Inventor： Jongmin Baek

IPC: G06T5/00 ,  G06T7/136 ,  G06T7/12 ,  G06T5/20 ,  G06T7/168 ,  G06T7/11

Abstract: One or more embodiments of an image enhancement system enable a computing device to generate an enhanced digital image. In particular, a computing device can enhance a digital image including, for example, a photograph of a whiteboard, document, chalkboard, or other object having a uniform background. The computing device can determine modifications to apply to the digital image by minimizing an energy heuristic that both causes pixels of the digital image to change to a uniform color (e.g., white) and preserves gradients from the digital image. The computing device can further generate an enhanced digital image by applying the determined modifications to the digital image.

公开(公告)号：US10417321B2

公开(公告)日：2019-09-17

申请号：US15658291

申请日：2017-07-24

Applicant: DROPBOX, INC.

Inventor： Nils Peter Welinder ,  Peter N. Belhumeur ,  Ying Xiong ,  Jongmin Baek ,  Simon Kozlov ,  Thomas Berg ,  David J. Kriegman

IPC: G06T7/00 ,  G06F17/24 ,  G06F17/21 ,  G06T7/194 ,  G06T11/00 ,  G06F17/22 ,  G06K9/00 ,  G06K9/46 ,  G06K9/78 ,  G06T5/00 ,  G06F16/93 ,  G06F3/0484

Abstract: The present disclosure is directed toward systems and methods to quickly and accurately identify boundaries of a displayed document in a live camera image feed, and provide a document boundary indicator within the live camera image feed. For example, systems and methods described herein utilize different display document detection processes in parallel to generate and provide a document boundary indicator that accurately corresponds with a displayed document within a live camera image feed. Thus, a user of the mobile computing device can easily see whether the document identification system has correctly identified the displayed document within the camera viewfinder feed.

公开(公告)号：US20190220959A1

公开(公告)日：2019-07-18

申请号：US16368518

申请日：2019-03-28

Applicant: Dropbox, Inc.

Inventor： Jongmin Baek

IPC: G06T5/00 ,  G06T7/11 ,  G06T7/168 ,  G06T5/20 ,  G06T7/12 ,  G06T7/136

CPC classification number: G06T5/005 ,  G06T1/0007 ,  G06T5/008 ,  G06T5/20 ,  G06T7/11 ,  G06T7/12 ,  G06T7/136 ,  G06T7/168 ,  G06T2207/10004 ,  G06T2207/10024 ,  G06T2207/20012 ,  G06T2207/20028 ,  G06T2207/20112

Abstract: One or more embodiments of an image enhancement system enable a computing device to generate an enhanced digital image. In particular, a computing device can enhance a digital image including, for example, a photograph of a whiteboard, document, chalkboard, or other object having a uniform background. The computing device can determine modifications to apply to the digital image by minimizing an energy heuristic that both causes pixels of the digital image to change to a uniform color (e.g., white) and preserves gradients from the digital image. The computing device can further generate an enhanced digital image by applying the determined modifications to the digital image.

公开(公告)号：US20180189369A1

公开(公告)日：2018-07-05

申请号：US15396191

申请日：2016-12-30

Applicant: Dropbox, Inc.

Inventor： Jongmin Baek ,  Daniel Wagner ,  Yuyang Guo ,  Kimberly Watkins

IPC: G06F17/30

CPC classification number: G06F16/27 ,  G06F16/219 ,  G06F16/2358

Abstract: A first client device associated with a first account of a content management system can receive a first or latest version of a synchronized content item. The first client device can determine differences or the “diff” between the first version and a second or next-to-latest version of the content item and upload the first version and the diff to the content management system. Upon receiving the first version and the diff, the content management system can store the first version and the diff and download them to the second client device. The second client device can generate a notification when the download finishes and present the notification with an interface element for requesting presentation of the diff. When the second client device detects a selection of the interface element, the second client device can present the diff

公开(公告)号：US20170178299A1

公开(公告)日：2017-06-22

申请号：US14971733

申请日：2015-12-16

Applicant: DROPBOX, INC.

Inventor： Jongmin Baek

IPC: G06T5/00 ,  G06T5/20 ,  G06T7/00

CPC classification number: G06T5/005 ,  G06T1/0007 ,  G06T5/008 ,  G06T5/20 ,  G06T7/11 ,  G06T7/12 ,  G06T7/136 ,  G06T7/168 ,  G06T2207/10004 ,  G06T2207/10024 ,  G06T2207/20012 ,  G06T2207/20028 ,  G06T2207/20112

Abstract: One or more embodiments of an image enhancement system enable a computing device to generate an enhanced digital image. In particular, a computing device can enhance a digital image including, for example, a photograph of a whiteboard, document, chalkboard, or other object having a uniform background. The computing device can determine modifications to apply to the digital image by minimizing an energy heuristic that both causes pixels of the digital image to change to a uniform color (e.g., white) and preserves gradients from the digital image. The computing device can further generate an enhanced digital image by applying the determined modifications to the digital image.