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公开(公告)号：US11748988B1
公开(公告)日：2023-09-05
申请号：US17236688
申请日：2021-04-21
Applicant: Amazon Technologies, Inc.
Inventor： Shixing Chen , Xiaohan Nie , David Jiatian Fan , Dongqing Zhang , Vimal Bhat , Muhammad Raffay Hamid
IPC: G06V20/40 , G06N20/00 , G06N5/04 , G06F16/73 , G06F16/78 , G11B27/34 , H04N5/14 , G11B27/036 , G06V10/75 , G06F18/22 , G06F18/214
CPC classification number: G06V20/46 , G06F16/73 , G06F16/78 , G06F18/214 , G06F18/22 , G06N5/04 , G06N20/00 , G06V10/751 , G06V20/49 , G11B27/036 , G11B27/34 , H04N5/147
Abstract: Techniques for automatic scene change detection in a video are described. As one example, a computer-implemented method includes extracting features of a query shot and its neighboring shots of a first set of shots without labels with a query model, determining a key shot of the neighboring shots which is most similar to the query shot based at least in part on the features of the query shot and its neighboring shots, extracting features of the key shot with a key model, training the query model into a trained query model based at least in part on a comparison of the features of the query shot and the features of the key shot, extracting features of a second set of shots with labels with the trained query model, and training a temporal model into a trained temporal model based at least in part on the features extracted from the second set of shots and the labels of the second set of shots.
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公开(公告)号：US11610610B1
公开(公告)日：2023-03-21
申请号：US17643805
申请日：2021-12-10
Applicant: Amazon Technologies, Inc.
Inventor： Avijit Vajpayee , Hooman Mahyar , Vimal Bhat , Abhinav Jain , Zhikang Zhang
Abstract: Systems and methods are provided for detecting and correcting synchronization errors in multimedia content comprising a video stream and a non-original audio stream. Techniques for directly detecting synchronization of video and audio streams may be inadequate to detect synchronize errors for non-original audio streams, particularly where such non-original audio streams contain audio not reflective of events within the video stream, such as speaking dialog in a different language than the speakers of the video stream. To overcome this problem, the present disclosure enables synchronization of a non-original audio stream to another audio stream, such as an original audio stream, that is synchronized to the video stream. By comparison of signatures, the non-original and other audio stream are aligned to determine an offset that can be used to synchronize the non-original audio stream to the video stream.
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公开(公告)号：US11216684B1
公开(公告)日：2022-01-04
申请号：US16781456
申请日：2020-02-04
Applicant: Amazon Technologies, Inc.
Inventor： Hooman Mahyar , Vimal Bhat , Harshal Dilip Wanjari , Sushanta Das , Neha Aggarwal
Abstract: Techniques are described for detecting and replacing burned-in subtitles in image and video content.
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公开(公告)号：US11935170B1
公开(公告)日：2024-03-19
申请号：US17530070
申请日：2021-11-18
Applicant: Amazon Technologies, Inc.
Inventor： Abhinav Jain , Avijit Vajpayee , Vimal Bhat , Arjun Cholkar , Louis Kirk Barker
IPC: G06T13/40 , G06F40/20 , G06N3/08 , G06T17/00 , G06V20/40 , G06V40/16 , G06V40/20 , G09B21/00 , G10L25/63 , H04N5/272
CPC classification number: G06T13/40 , G06F40/20 , G06N3/08 , G06T17/00 , G06V20/46 , G06V40/174 , G06V40/28 , G09B21/009 , G10L25/63 , H04N5/272
Abstract: Systems, methods, and computer-readable media are disclosed for systems and methods for automated generation and presentation of sign language avatars for video content. Example methods may include determining, by one or more computer processors coupled to memory, a first segment of video content, the first segment including a first set of frames, first audio content, and first subtitle data, where the first subtitle data comprises a first word and a second word. Methods may include determining, using a first machine learning model, a first sign gesture associated with the first word, determining first motion data associated with the first sign gesture, and determining first facial expression data. Methods may include generating an avatar configured to perform the first sign gesture using the first motion data, where a facial expression of the avatar while performing the first sign gesture is based on the first facial expression data.
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公开(公告)号：US11582519B1
公开(公告)日：2023-02-14
申请号：US17215475
申请日：2021-03-29
Applicant: Amazon Technologies, Inc.
Inventor： Vimal Bhat , Sunil Sharadchandra Hadap , Abhinav Jain
IPC: H04N21/466 , G06V20/40 , G06V40/10 , G06V40/16
Abstract: Techniques are disclosed for performing video synthesis of audiovisual content. In an example, a computing system may determine first parameters of a face and body of a source person from a first frame in a video shot. The system also determines second parameters of a face and body of a target person. The system determines that the target person is a replacement for the source person in the first frame. The system generates third parameters of the target person based on merging the first parameters with the second parameters. The system then performs deferred neural rendering of the target person based on a neural texture that corresponds to a texture space of the video shot. The system then outputs a second frame that shows the target person as the replacement for the source person.
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Patent Agency Ranking
公开(公告)号：US11093781B2
公开(公告)日：2021-08-17
申请号：US16208074
申请日：2018-12-03
Applicant: Amazon Technologies, Inc.
Inventor： Vimal Bhat , Shai Ben Nun , Hooman Mahyar , Harshal Wanjari
Abstract: A user may indicate an interest relating to events such as objects, persons, or activities, where the events included in content depicted in a video. The user may also indicate a configurable action associated with the user interest, including receiving a notification via an electronic device. A video item, for example a live-streaming sporting event, may be broken into frames and analyzed frame-by-frame to determine a region of interest. The region of interest is then analyzed to identify objects, persons, or activities depicted in the frame. In particular, the region of interest is compared to stored images that are known to depict different objects, persons, or activities. When a region of interest is determined to be associated with the user interest, the configurable action is triggered.
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公开(公告)号：US11659217B1
公开(公告)日：2023-05-23
申请号：US17301212
申请日：2021-03-29
Applicant: Amazon Technologies, Inc.
Inventor： Hooman Mahyar , Avijit Vajpayee , Abhinav Jain , Arjun Cholkar , Vimal Bhat
IPC: H04N21/242 , H04N21/234 , H04N21/233
CPC classification number: H04N21/242 , H04N21/233 , H04N21/234
Abstract: Techniques are described for detecting desynchronization between an audio component and a video component of a media presentation. Feature sets may be determined for portions of the audio component and portions of the video component, which may then be used to generate correlations between portions of the audio component and portions of the video component. Synchronization may then be assessed based on the correlations.
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公开(公告)号：US10860648B1
公开(公告)日：2020-12-08
申请号：US16129567
申请日：2018-09-12
Applicant: Amazon Technologies, Inc.
Inventor： Manolya McCormick , Vimal Bhat , Shai Ben Nun
Abstract: Systems, methods, and computer-readable media are disclosed for detecting a mismatch between the spoken language in an audio file and the audio language that is tagged as the spoken language in the audio file metadata. Example methods may include receiving a media file including spoken language metadata. Certain methods include generating an audio sample from the media file. Certain methods include generating a text translation of the audio sample based on the spoken language metadata. Certain methods include determining that the spoken language metadata does not match a spoken language in the audio sample based on the text translation. Certain methods include sending an indication that the spoken language metadata does not match the spoken language.
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公开(公告)号：US10455297B1
公开(公告)日：2019-10-22
申请号：US16116618
申请日：2018-08-29
Applicant: Amazon Technologies, Inc.
Inventor： Hooman Mahyar , Harshal Dilip Wanjari , Vimal Bhat
Abstract: Systems, methods, and computer-readable media are disclosed for systems and methods for customized video content summary generation. Example methods may include determining a first segment of digital content including a first set of frames, first textual content, and first audio content. Example methods may include determining a first event that occurs in the first set of frames, determining a first theme of the first event, generating first metadata indicative of the first theme, and determining a meaning of a first sentence that occurs in the first textual content. Some methods may include determining a second theme of the first sentence, generating second metadata indicative of the second theme, determining that user preference data associated with an active user profile includes the first theme and the second theme, generating a video summary that includes a portion of the first segment of digital content, and presenting the video summary.
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公开(公告)号：US11581020B1
公开(公告)日：2023-02-14
申请号：US17217221
申请日：2021-03-30
Applicant: Amazon Technologies, Inc.
Inventor： Sunil Sharadchandra Hadap , Vimal Bhat , Abhinav Jain
IPC: G11B27/036 , G06V40/16
Abstract: Techniques are disclosed for performing video synthesis of audiovisual content. In an example, a computing system may determine first facial parameters of a face of a particular person from a first frame in a video shot, whereby the video shot shows the particular person speaking a message. The system may determine second facial parameters based on an audio file that corresponds to the message being spoken in a different way from the video shot. The system may generate third facial parameters by merging the first and the second facial parameters. The system may identify a region of the face that is associated with a difference between the first and second facial parameters, render the region of the face based on a neural texture of the video shot, and then output a new frame showing the face of the particular person speaking the message in the different way.
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