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公开(公告)号：US10366497B2
公开(公告)日：2019-07-30
申请号：US15618967
申请日：2017-06-09
Applicant: Apple Inc.
Inventor： Ke Zhang , Jiefu Zhai , Yunfei Zheng , Shujie Liu , Albert E. Keinath , Xiaosong Zhou , Chris Y. Chung , Hsi-Jung Wu
IPC: G06T5/00 , G06T7/194 , G06T7/11 , G11B27/031
Abstract: Techniques for cropping images containing an occlusion are presented. A method for image editing is presented comprising, when an occlusion is detected in an original digital image, determining an area occupied by the occlusion, assigning importance scores to different content elements of the original digital image, defining a cropping window around an area of the original digital image that does not include the area occupied by the occlusion and that is based on the importance scores, and cropping the original digital image to the cropping window.
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公开(公告)号：US20180349705A1
公开(公告)日：2018-12-06
申请号：US15613130
申请日：2017-06-02
Applicant: Apple Inc.
Inventor： Jae Hoon Kim , Ming Chen , Hang Yuan , Jiefu Zhai , Dazhong Zhang , Xiaosong Zhou , Chris Chung , Hsi-Jung Wu
Abstract: Techniques are disclosed for managing display of content from multi-view video data. According to these techniques, an object may be identified from content of the multi-view video. The object's location may be tracked across a sequence of multi-view video. The technique may extract a sub-set of video that is contained within a view window that is shifted in an image space of the multi-view video in correspondence to the tracked object's location. These techniques may be implemented either in an image source device or an image sink device.
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公开(公告)号：US20180338161A1
公开(公告)日：2018-11-22
申请号：US16050744
申请日：2018-07-31
Applicant: Apple Inc.
Inventor： Jiefu Zhai , Dazhong Zhang , Xiaosong Zhou , Chris Y. Chung , Hsi-Jung Wu , Peikang Song , David R. Conrad , Jae Hoon Kim , Yunfei Zheng
IPC: H04N19/82 , H04N19/186
CPC classification number: H04N19/82 , H04N19/186
Abstract: Chroma deblock filtering of reconstructed video samples may be performed to remove blockiness artifacts and reduce color artifacts without over-smoothing. In a first method, chroma deblocking may be performed for boundary samples of a smallest transform size, regardless of partitions and coding modes. In a second method, chroma deblocking may be performed when a boundary strength is greater than 0. In a third method, chroma deblocking may be performed regardless of boundary strengths. In a fourth method, the type of chroma deblocking to be performed may be signaled in a slice header by a flag. Furthermore, luma deblock filtering techniques may be applied to chroma deblock filtering.
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公开(公告)号：US20150350641A1
公开(公告)日：2015-12-03
申请号：US14636839
申请日：2015-03-03
Applicant: Apple Inc.
Inventor： Xiaosong Zhou , Jiefu Zhai , Yeping Su , Chris Y. Chung , Hsi-Jung Wu
IPC: H04N19/105 , H04N19/159 , H04N19/13 , H04N19/176 , H04N19/18 , H04N19/119 , H04N19/167
CPC classification number: H04N19/105 , H04N19/119 , H04N19/13 , H04N19/159 , H04N19/167 , H04N19/176 , H04N19/18 , H04N19/85 , H04N19/98
Abstract: A video coding/decoding system codes data efficiently even when input video data exhibits changes in dynamic range. The system may map pixel values of the first frame from a dynamic range specific to the input image data to a second dynamic range that applies universally to a plurality of frames that have different dynamic ranges defined for them. The system may code the mapped pixel values to reduce bandwidth of the mapped frame data, and thereafter transmit the coded image data to a channel.
Abstract translation: 视频编码/解码系统即使在输入视频数据表现出动态范围的变化时，也能有效地对数据进行编 该系统可将来自特定于输入图像数据的动态范围的第一帧的像素值映射到通常适用于为它们定义的不同动态范围的多个帧的第二动态范围。 系统可以对映射的像素值进行编码以减少映射的帧数据的带宽，然后将编码的图像数据发送到信道。
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公开(公告)号：US20130235928A1
公开(公告)日：2013-09-12
申请号：US13652311
申请日：2012-10-15
Applicant: APPLE, INC.
Inventor： Chris Y. Chung , Hao Pan , Jiefu Zhai , Yeping Su , Douglas Scott Price , Hsi-Jung Wu , Xiaosong Zhou
CPC classification number: H04N19/577 , H04N19/107 , H04N19/117 , H04N19/124 , H04N19/139 , H04N19/149 , H04N19/15 , H04N19/154 , H04N19/156 , H04N19/172 , H04N19/192 , H04N19/46 , H04N19/58
Abstract: Embodiments of the present invention provide techniques for efficiently coding/decoding video data during circumstances when constraints are imposed on the video data. A frame from a video sequence may be marked as a delayed decoder refresh frame. Frames successive to the delayed decoder refresh frame in coding order may predictively coded without reference to frames preceding the delayed decoder refresh frame in coding order. The distance between the delayed decoder refresh frame and the successive frames may exceed a distance threshold. Frames successive to a current frame in decoding order may be decoded without reference to frames preceding the current frame in decoding order. The distance between the current frame and the successive frames may exceed a distance threshold.
Abstract translation: 本发明的实施例提供了在对视频数据施加约束的情况下有效地对视频数据进行编码/解码的技术。 来自视频序列的帧可被标记为延迟解码器刷新帧。 以编码顺序连续到延迟解码器刷新帧的帧可以以编码顺序预先编码而不参考延迟解码器刷新帧之前的帧。 延迟解码器刷新帧和连续帧之间的距离可以超过距离阈值。 可以解码顺序对当前帧连续的帧进行解码，而不参考当前帧之前的帧。 当前帧与连续帧之间的距离可能会超过距离阈值。
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Patent Agency Ranking
公开(公告)号：US12096044B2
公开(公告)日：2024-09-17
申请号：US18181261
申请日：2023-03-09
Applicant: Apple Inc.
Inventor： Xiaohua Yang , Alexandros Tourapis , Dazhong Zhang , Hang Yuan , Hsi-Jung Wu , Jae Hoon Kim , Jiefu Zhai , Ming Chen , Xiaosong Zhou
IPC: H04N19/90 , G06F3/01 , H04N19/52 , H04N19/597 , H04N21/2343
CPC classification number: H04N19/90 , G06F3/013 , H04N19/52 , H04N19/597 , H04N21/234345
Abstract: In communication applications, aggregate source image data at a transmitter exceeds the data that is needed to display a rendering of a viewport at a receiver. Improved streaming techniques that include estimating a location of a viewport at a future time. According to such techniques, the viewport may represent a portion of an image from a multi-directional video to be displayed at the future time, and tile(s) of the image may be identified in which the viewport is estimated to be located. In these techniques, the image data of tile(s) in which the viewport is estimated to be located may be requested at a first service tier, and the other tile in which the viewport is not estimated to be located may be requested at a second service tier, lower than the first service tier.
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公开(公告)号：US20220329756A1
公开(公告)日：2022-10-13
申请号：US17846896
申请日：2022-06-22
Applicant: Apple Inc.
Inventor： Jae Hoon Kim , Chris Y. Chung , Dazhong Zhang , Hang Yuan , Hsi-Jung Wu , Xiaosong Zhou , Jiefu Zhai
IPC: H04N7/14 , H04N7/15 , G06F3/0488
Abstract: Embodiments of the present disclosure provide systems and methods for perspective shifting in a video conferencing session. In one exemplary method, a video stream may be generated. A foreground element may be identified in a frame of the video stream and distinguished from a background element of the frame. Data may be received representing a viewing condition at a terminal that will display the generated video stream. The frame of the video stream may be modified based on the received data to shift of the foreground element relative to the background element. The modified video stream may be displayed at the displaying terminal.
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公开(公告)号：US11240492B2
公开(公告)日：2022-02-01
申请号：US16254528
申请日：2019-01-22
Applicant: Apple Inc.
Inventor： Jiefu Zhai , Xingyu Zhang , Xiaosong Zhou , Jun Xin , Hsi-Jung Wu , Yeping Su
IPC: H04N19/105 , H04N19/61 , H04N19/147 , H04N19/159 , H04N19/176 , G06N3/08
Abstract: Systems and methods disclosed for video compression, utilizing neural networks for predictive video coding. Processes employed combine multiple banks of neural networks with codec system components to carry out the coding and decoding of video data.
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公开(公告)号：US11093752B2
公开(公告)日：2021-08-17
申请号：US15613130
申请日：2017-06-02
Applicant: Apple Inc.
Inventor： Jae Hoon Kim , Ming Chen , Hang Yuan , Jiefu Zhai , Dazhong Zhang , Xiaosong Zhou , Chris Chung , Hsi-Jung Wu
Abstract: Techniques are disclosed for managing display of content from multi-view video data. According to these techniques, an object may be identified from content of the multi-view video. The object's location may be tracked across a sequence of multi-view video. The technique may extract a sub-set of video that is contained within a view window that is shifted in an image space of the multi-view video in correspondence to the tracked object's location. These techniques may be implemented either in an image source device or an image sink device.
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公开(公告)号：US10999583B2
公开(公告)日：2021-05-04
申请号：US16132219
申请日：2018-09-14
Applicant: Apple Inc.
Inventor： Alexandros Tourapis , Dazhong Zhang , Hang Yuan , Hsi-Jung Wu , Jae Hoon Kim , Jiefu Zhai , Ming Chen , Xiaosong Zhou
IPC: H04N19/29 , H04N19/103 , G09G5/14 , H04N21/44
Abstract: Aspects of the present disclosure provide techniques for reducing latency and improving image quality of a viewport extracted from multi-directional video communications. According to such techniques, first streams of coded video data are received from a source. The first streams include coded data for each of a plurality of tiles representing a multi-directional video, where each tile corresponding to a predetermined spatial region of the multi-directional video, and at least one tile of the plurality of tiles in the first streams contains a current viewport location at a receiver. The techniques include decoding the first streams and displaying the tile containing the current viewport location. When the viewport location at the receiver changes to include a new tile of the plurality of tiles, retrieving and decoding first streams for the new tile, displaying the decoded content for the changed viewport location, and transmitting the changed viewport location to the source.
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