公开(公告)号：US11645826B2

公开(公告)日：2023-05-09

申请号：US17020519

申请日：2020-09-14

Applicant: Dropbox, Inc.

Inventor： David J. Kriegman ,  Peter N. Belhumeur ,  Bradley Neuberg ,  Leonard Fink

IPC: G06K9/62 ,  G06V10/24 ,  G06F18/214 ,  G06F18/21 ,  G06V30/40 ,  G06V30/19 ,  G06V10/82 ,  G06V20/62

CPC classification number: G06V10/242 ,  G06F18/214 ,  G06F18/217 ,  G06V10/82 ,  G06V20/63 ,  G06V30/19173 ,  G06V30/40

Abstract: The present disclosure relates to generating computer searchable text from digital images that depict documents utilizing an orientation neural network and/or text prediction neural network. For example, one or more embodiments detect digital images that depict documents, identify the orientation of the depicted documents, and generate computer searchable text from the depicted documents in the detected digital images. In particular, one or more embodiments train an orientation neural network to identify the orientation of a depicted document in a digital image. Additionally, one or more embodiments train a text prediction neural network to analyze a depicted document in a digital image to generate computer searchable text from the depicted document. By utilizing the identified orientation of the depicted document before analyzing the depicted document with a text prediction neural network, the disclosed systems can efficiently and accurately generate computer searchable text for a digital image that depicts a document.

公开(公告)号：US11620439B2

公开(公告)日：2023-04-04

申请号：US17323838

申请日：2021-05-18

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 ,  G06F16/93 ,  G06T5/00 ,  G06F40/106 ,  G06F40/123 ,  G06F40/197 ,  G06V10/10 ,  G06V10/44 ,  G06V20/40 ,  G06V30/40 ,  G06V30/413 ,  G06V30/414 ,  G06F3/04842 ,  G06T11/60 ,  G06F3/12 ,  G06F40/103 ,  G06F40/169 ,  G06V10/30 ,  G06F17/00 ,  G06V10/24 ,  G06V30/418

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.

公开(公告)号：US10318113B2

公开(公告)日：2019-06-11

申请号：US15207270

申请日：2016-07-11

Applicant: DROPBOX, INC.

Inventor： Peter N. Belhumeur ,  David J. Kriegman ,  Thomas Berg

IPC: G06F3/048 ,  G06F3/0482 ,  G06F3/0484 ,  G06F3/0481 ,  G06F3/0485 ,  G06F3/0488 ,  G06K9/46 ,  G06F16/50

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.

公开(公告)号：US20170193337A1

公开(公告)日：2017-07-06

申请号：US14986585

申请日：2015-12-31

Applicant: DROPBOX, INC.

Inventor： David J. Kriegman ,  Peter N. Belhumeur ,  Thomas Berg ,  Nils Peter Welinder

IPC: G06K9/62 ,  G06K9/66

CPC classification number: G06K9/6277 ,  G06K9/62 ,  G06K9/6212 ,  G06K9/6292 ,  G06K9/66

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.

公开(公告)号：US11640234B2

公开(公告)日：2023-05-02

申请号：US17403831

申请日：2021-08-16

Applicant: Dropbox, Inc.

Inventor： Peter N. Belhumeur ,  David J. Kriegman ,  Thomas Berg

IPC: G06F3/048 ,  G06F3/0482 ,  G06F3/04842 ,  G06F3/0481 ,  G06F3/0485 ,  G06F16/54 ,  G06F16/532 ,  G06F16/538 ,  G06V10/46 ,  G06F3/04845 ,  G06F3/04883 ,  G06F16/50

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.

公开(公告)号：US11620438B2

公开(公告)日：2023-04-04

申请号：US17315027

申请日：2021-05-07

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 ,  G06F16/93 ,  G06T5/00 ,  G06F40/106 ,  G06F40/123 ,  G06F40/197 ,  G06V10/10 ,  G06V10/44 ,  G06V20/40 ,  G06V30/40 ,  G06V30/413 ,  G06V30/414 ,  G06F3/04842 ,  G06T11/60 ,  G06F3/12 ,  G06F40/103 ,  G06F40/169 ,  G06V10/30 ,  G06V10/24 ,  G06V30/418

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：US11017159B2

公开(公告)日：2021-05-25

申请号：US16830047

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.

公开(公告)号：US20180012109A1

公开(公告)日：2018-01-11

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

IPC: G06K9/62 ,  G06K9/66

CPC classification number: G06K9/6277 ,  G06K9/62 ,  G06K9/6212 ,  G06K9/6292 ,  G06K9/66

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.

公开(公告)号：US09846822B2

公开(公告)日：2017-12-19

申请号：US14986585

申请日：2015-12-31

Applicant: DROPBOX, INC.

Inventor： David J. Kriegman ,  Peter N. Belhumeur ,  Thomas Berg ,  Nils Peter Welinder

IPC: G06K9/62 ,  G06K9/66

CPC classification number: G06K9/6277 ,  G06K9/62 ,  G06K9/6212 ,  G06K9/6292 ,  G06K9/66

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.

公开(公告)号：US20160320932A1

公开(公告)日：2016-11-03

申请号：US15207270

申请日：2016-07-11

Applicant: DROPBOX, INC.

Inventor： Peter N. Belhumeur ,  David J. Kriegman ,  Thomas Berg

IPC: G06F3/0482 ,  G06K9/46 ,  G06F3/0485 ,  G06F3/0484 ,  G06F3/0488

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。