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公开(公告)号：US11003841B2
公开(公告)日：2021-05-11
申请号：US16830077
申请日：2020-03-25
Applicant: DROPBOX, INC.
Inventor： Nils Peter Welinder , Peter N. Belhumeur , Ying Xiong , Jongmin Baek , Simon Kozlov , Thomas Berg , David J. Kriegman
IPC: G06F40/166 , G06T7/194 , G06T11/00 , G06K9/00 , G06F16/93 , G06T5/00 , G06F40/106 , G06F40/123 , G06F40/197 , G06K9/46 , G06K9/78 , G06F3/0484 , G06K9/40 , G06K9/32 , G06T11/60 , G06F3/12 , G06F40/103 , G06F40/169 , G06F17/00
Abstract: The present disclosure is directed toward systems and methods that efficiently and effectively generate an enhanced document image of a displayed document in an image frame captured from a live image feed. For example, systems and methods described herein apply a document enhancement process to a displayed document in an image frame that result in an enhanced document image that is cropped, rectified, un-shadowed, and with dark text against a mostly white background. Additionally, systems and method described herein determine whether a stored digital content item includes a displayed document. In response to determining that a stored digital content item does include a displayed document, systems and methods described herein generate an enhanced document image of a displayed document included in the stored digital content item.
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公开(公告)号：US10769502B1
公开(公告)日：2020-09-08
申请号：US16378261
申请日：2019-04-08
Applicant: Dropbox, Inc.
Inventor： Thomas Berg , Peter Neil Belhumeur
Abstract: Computer-implemented techniques for sematic image retrieval are disclosed. Digital images are classified into N number of categories based on their visual content. The classification provides a set of N-dimensional image vectors for the digital images. Each image vector contains up to N number of probability values for up to N number of corresponding categories. An N-dimensional image match vector is generated that projects an input keyword query into the vector space of the set of image vectors by computing the vector similarities between a word vector for the input query and a word vector for each of the N number of categories. Vector similarities between the image match vectors and the set of image vectors can be computed to determine images semantically relevant to the input query.
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Patent Agency Ranking
公开(公告)号：US20200226319A1
公开(公告)日：2020-07-16
申请号：US16830077
申请日：2020-03-25
Applicant: DROPBOX, INC.
Inventor： Nils Peter Welinder , Peter N. Belhumeur , Ying Xiong , Jongmin Baek , Simon Kozlov , Thomas Berg , David J. Kriegman
IPC: G06F40/166 , G06T7/194 , G06T11/00 , G06K9/00 , G06F16/93 , G06T5/00 , G06F40/106 , G06F40/123 , G06F40/197 , G06K9/46 , G06K9/78
Abstract: The present disclosure is directed toward systems and methods that efficiently and effectively generate an enhanced document image of a displayed document in an image frame captured from a live image feed. For example, systems and methods described herein apply a document enhancement process to a displayed document in an image frame that result in an enhanced document image that is cropped, rectified, un-shadowed, and with dark text against a mostly white background. Additionally, systems and method described herein determine whether a stored digital content item includes a displayed document. In response to determining that a stored digital content item does include a displayed document, systems and methods described herein generate an enhanced document image of a displayed document included in the stored digital content item.
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公开(公告)号：US20190286288A1
公开(公告)日：2019-09-19
申请号：US16433903
申请日：2019-06-06
Applicant: Dropbox, Inc.
Inventor： Peter N. Belhumeur , David J. Kriegman , Thomas Berg
IPC: G06F3/0482 , G06F3/0485 , G06F16/50 , G06K9/46 , G06F3/0484 , G06F3/0488 , G06F3/0481
Abstract: One or more embodiments of a digital content system allow a user to conveniently search and/or navigate through a collection of digital content items. In particular, a user can interact with a client device to search for and identify one or more digital content items within a collection of digital content items. For example, the digital content system may provide a photo from a collection of photos via a graphical user interface. The digital content system can receive a user input identifying a selection of one or more visual features within the photo. Based on the selected visual feature(s), the digital content system may identify photos from the collection of photos that include the identified visual feature(s) and provide access to the identified photos via the graphical user interface.
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公开(公告)号：US10255527B2
公开(公告)日：2019-04-09
申请号：US15711469
申请日：2017-09-21
Applicant: DROPBOX, INC.
Inventor： David J. Kriegman , Peter N. Belhumeur , Thomas Berg , Nils Peter Welinder
Abstract: The present disclosure is directed toward systems and methods that enable more accurate digital object classification. In particular, disclosed systems and methods address inaccuracies in digital object classification introduced by variations in classification scores. Specifically, in one or more embodiments, disclosed systems and methods generate probability functions utilizing digital test objects and transform classifications scores into normalized classification scores utilizing probability functions. Disclosed systems and methods utilize normalized classification scores to more accurately classify and identify digital objects in a variety of applications.
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公开(公告)号：US20180025251A1
公开(公告)日：2018-01-25
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
CPC classification number: G06F17/24 , G06F3/04842 , G06F16/93 , G06F17/212 , G06F17/2205 , G06F17/2288 , G06K9/00442 , G06K9/00456 , G06K9/00463 , G06K9/00744 , G06K9/3208 , G06K9/40 , G06K9/4604 , G06K9/78 , G06T5/002 , G06T5/007 , G06T7/194 , G06T11/001 , G06T2207/20056 , G06T2207/20081 , G06T2207/20084 , G06T2207/30176 , G06T2210/22
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.
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37.发明授权Navigating digital content using visual characteristics of the digital content 有权使用数字内容的视觉特征来浏览数字内容公开(公告)号：US09448704B1
公开(公告)日：2016-09-20
申请号：US14699513
申请日：2015-04-29
Applicant: DROPBOX, INC.
Inventor： Peter N. Belhumeur , David J. Kriegman , Thomas Berg
IPC: G06F3/048 , G06F3/0484 , G06F3/0481 , G06F3/0485 , G06F3/0482
CPC classification number: G06F3/0482 , G06F3/0481 , G06F3/04842 , G06F3/04845 , G06F3/0485 , G06F3/04883 , G06F17/30244 , G06F2203/04806 , G06K9/4671
Abstract: One or more embodiments of a digital content system allow a user to conveniently search and/or navigate through a collection of digital content items. In particular, a user can interact with a client device to search for and identify one or more digital content items within a collection of digital content items. For example, the digital content system may provide a photo from a collection of photos via a graphical user interface. The digital content system can receive a user input identifying a selection of one or more visual features within the photo. Based on the selected visual feature(s), the digital content system may identify photos from the collection of photos that include the identified visual feature(s) and provide access to the identified photos via the graphical user interface.
Abstract translation: 数字内容系统的一个或多个实施例允许用户方便地搜索和/或导航数字内容项目的集合。 特别地，用户可以与客户端设备交互以搜索并识别数字内容项集合内的一个或多个数字内容项目。 例如，数字内容系统可以经由图形用户界面从照片集合提供照片。 数字内容系统可以接收识别照片内的一个或多个视觉特征的选择的用户输入。 基于所选择的视觉特征，数字内容系统可以从包括所识别的视觉特征的照片集合中识别照片，并通过图形用户界面提供对所识别的照片的访问。
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