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公开(公告)号：WO2016039956A1
公开(公告)日：2016-03-17
申请号：PCT/US2015/045862
申请日：2015-08-19
Applicant: APPLE INC.
Inventor： SU, Yeping , WU, Hsi-Jung , ZHANG, Ke , CHUNG, Chris, Y. , ZHOU, Xiaosong
IPC: H04N21/2343 , H04N21/2365 , H04N21/845 , H04N21/8543 , H04N21/238
CPC classification number: H04N19/10 , H04N21/234363 , H04N21/23439 , H04N21/23805 , H04N21/8456 , H04N21/8543
Abstract: In a video coding system (200), a common video sequence is coded multiple times to yield respective instances of coded video data. Each instance may be coded according to a set coding parameters derived from a target bit rate of a respective tier of service. Each tier may be coded according to a constraint that limits a maximum coding rate of the tier to be less than a target bit rate of another predetermined tier of service. Having been coded according to the constraint facilitates dynamic switching among tiers by a requesting client device processing resources or communication bandwidth changes. Improved coding systems to switch among different coding streams may increase quality of video streamed while minimizing transmission and storage size of such content.
Abstract translation: 在视频编码系统（200）中，公共视频序列被多次编码以产生编码视频数据的各个实例。 每个实例可以根据从相应服务等级的目标比特率导出的集合编码参数进行编码。 可以根据将层的最大编码率限制为小于另一预定服务层的目标比特率的约束来对每个层进行编码。 根据该约束进行编码有利于请求客户端设备处理资源或通信带宽变化的层之间的动态切换。 改进的在不同编码流之间切换的编码系统可以提高视频流的质量，同时最小化这些内容的传输和存储大小。
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公开(公告)号：WO2015183410A1
公开(公告)日：2015-12-03
申请号：PCT/US2015/024168
申请日：2015-04-02
Applicant: APPLE INC.
Inventor： NORMILE, James, O. , WU, Hsi-jung , ZHOU, Xiaosong , CHUNG, Chris, Y. , ZHANG, Ke , SU, Yeping
IPC: H04N21/231 , H04L29/08
CPC classification number: H04N21/433 , H04L65/4084 , H04L67/1078 , H04L67/108 , H04N21/231 , H04N21/25891 , H04N21/26258 , H04N21/432 , H04N21/437 , H04N21/6587 , H04N21/812 , H04N21/8456 , H04N21/85406
Abstract: A method and system for caching and streaming media content, including predictively delivering and/or acquiring content is provided. In the system, client devices may be communicatively coupled in a network, and may access and share cached content. Video segments making up a media stream may be selectively delivered to the clients such that a complete media stream may be formed from the different segments delivered to the different clients. Video segments may be pushed by the server to the client or requested by the client according to a prioritization scheme, including downloading: partial items on a client's subscription log, lower quality version(s) of content before higher quality version(s), higher bitrate segments before lower bitrate segments, summaries of full-length content, advertisements and splash screens common to multiple video clips.
Abstract translation: 提供了一种用于缓存和流式传输媒体内容的方法和系统，包括预测地传递和/或获取内容。 在系统中，客户机设备可以通信地耦合在网络中，并且可以访问和共享缓存的内容。 构成媒体流的视频片段可以被选择性地传递到客户端，使得可以从递送到不同客户端的不同片段形成完整的媒体流。 视频片段可以由服务器推送到客户端或由客户端根据优先化方案请求，包括下载：客户端订阅日志上的部分项目，较高质量版本之前的较低质量版本的内容，更高质量版本 低比特率段之间的比特率段，多个视频剪辑共有的全长内容，广告和闪屏的总结。
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公开(公告)号：EP2954681B1
公开(公告)日：2019-11-13
申请号：EP14712806.0
申请日：2014-02-25
Applicant: Apple Inc.
Inventor： SU, Yeping , CHUNG, Chris, Y. , ZHOU, Xiaosong , NORMILE, James, Oliver , WU, Hsi-Jung , JANSEN, Thomas , JEONG, Hyeonkuk , ABUAN, Joe, S. , PRICE, Douglas, Scott
IPC: H04N21/2343 , H04N21/2381 , H04N21/438 , H04N21/44
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公开(公告)号：WO2019055963A1
公开(公告)日：2019-03-21
申请号：PCT/US2018/051448
申请日：2018-09-18
Applicant: APPLE INC.
Inventor： MAMMOU, Khaled , ROBINET, Fabrice A. , TOURAPIS, Alexandros , SU, Yeping
Abstract: A system comprises an encoder configured to compress attribute information and/or spatial for a point cloud and/or a decoder configured to decompress compressed attribute and/or spatial information for the point cloud. To compress the attribute and/or spatial information, the encoder is configured to convert a point cloud into an image based representation. Also, the decoder is configured to generate a decompressed point cloud based on an image based representation of a point cloud.
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公开(公告)号：WO2016145243A1
公开(公告)日：2016-09-15
申请号：PCT/US2016/021856
申请日：2016-03-10
Applicant: APPLE INC.
Inventor： TOURAPIS, Alexandros, Michael , SU, Yeping , SINGER, David, William , WU, Hsi-Jung
IPC: H04N19/85 , H04N19/117 , H04N19/147 , H04N19/154 , H04N19/186 , H04N19/80 , H04N19/46 , H04N19/59 , H04N19/70 , H04N9/64 , H04N11/20 , H04N19/132
CPC classification number: H04N19/186 , H04N9/64 , H04N9/67 , H04N11/20 , H04N19/117 , H04N19/132 , H04N19/154 , H04N19/44 , H04N19/46 , H04N19/59 , H04N19/70 , H04N19/82
Abstract: A method of adaptive chroma downsampling is presented. The method comprises converting a source image to a converted image in an output color format, applying a plurality of downsample filters to the converted image and estimating a distortion for each filter chose the filter that produces the minimum distortion. The distortion estimation includes applying an upsample filter, and a pixel is output based on the chosen filter. Methods for closed loop conversions are also presented.
Abstract translation: 提出了一种自适应色度下采样方法。 该方法包括将源图像转换为输出颜色格式的转换图像，将多个下采样滤波器应用于转换的图像，并估计每个滤波器的失真选择产生最小失真的滤波器。 失真估计包括应用上采样滤波器，并且基于所选择的滤波器输出像素。 还提出了闭环转换的方法。
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Patent Agency Ranking6.发明申请
公开(公告)号：WO2016073283A1
公开(公告)日：2016-05-12
申请号：PCT/US2015/058098
申请日：2015-10-29
Applicant: APPLE INC.
Inventor： SU, Yeping , CHUNG, Chris, Y. , WU, Hsi-Jung , ZHAI, Jiefu , ZHANG, Ke , ZHOU, Xiaosong
IPC: H04N19/30 , H04N19/147
CPC classification number: H04N19/503 , H04N19/124 , H04N19/147 , H04N19/172 , H04N19/30
Abstract: A scalable coding system codes video as a base layer representation and an enhancement layer representation. A base layer coder may code an LDR representation of a source video. A predictor may predict an HDR representation of the source video from the coded base layer data. A comparator may generate prediction residuals which represent a difference between an HDR representation of the source video and the predicted HDR representation of the source video. A quantizer may quantize the residuals down to an LDR representation. An enhancement layer coder may code the LDR residuals. In other embodiments, the enhancement layer coder may code LDR-converted HDR video directly.
Abstract translation: 可扩展编码系统将视频编码为基本层表示和增强层表示。 基本层编码器可以对源视频的LDR表示进行编码。 预测器可以从编码的基本层数据预测源视频的HDR表示。 比较器可以产生表示源视频的HDR表示与源视频的预测HDR表示之间的差异的预测残差。 量化器可以将残差量化到LDR表示。 增强层编码器可以对LDR残差进行编码。 在其他实施例中，增强层编码器可以直接编码LDR转换的HDR视频。
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公开(公告)号：WO2014134177A2
公开(公告)日：2014-09-04
申请号：PCT/US2014/018702
申请日：2014-02-26
Applicant: APPLE INC.
Inventor： SU, Yeping , PAN, Hao , NORMILE, James, O. , WU, Hsi-Jung
IPC: H04N21/234
CPC classification number: H04N19/152 , H04N19/142 , H04N21/23418 , H04N21/23424 , H04N21/23439 , H04N21/2402 , H04N21/44004 , H04N21/44008 , H04N21/8456
Abstract: Systems and methods are presented for minimizing the suddenness and immediacy of changes to the video quality perceived by users due to bandwidth fluctuations and transitions between different bitrate streams. A method may include identifying an upcoming bitrate change in a bitstream and a nearest scene cut boundary from sync frame scene cut tags included in the bitstream. The method may include calculating whether waiting until the identified nearest scene cut boundary before changing the bitrate will cause the buffer to drop below a threshold. When the buffer is calculated to not drop below the threshold, the method may postpone the upcoming bitrate change until the identified nearest scene cut boundary.
Abstract translation: 提出了系统和方法，用于最小化由于带宽波动和不同比特率流之间的转换而使用户感觉到的视频质量的突变和即时性。 一种方法可以包括从比特流中包括的同步帧场景切换标签中识别比特流中的即将到来的比特率变化和最近的场景剪切边界。 该方法可以包括计算是否在更改比特率之前等待直到所识别的最近的场景切割边界将导致缓冲器降低到阈值以下。 当缓冲区被计算为不低于阈值时，该方法可以推迟即将到来的比特率改变直到所识别的最近的场景切割边界。
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公开(公告)号：WO2020154119A1
公开(公告)日：2020-07-30
申请号：PCT/US2020/013279
申请日：2020-01-13
Applicant: APPLE INC.
Inventor： ZHAI, Jiefu , ZHANG, Xingyu , ZHOU, Xiaosong , XIN, Jun , WU, Hsi-Jung , SU, Yeping
IPC: H04N19/50 , H04N19/12 , H04N19/103 , H04N19/147 , H04N19/172 , H04N19/176 , H04N19/60 , H04N19/463
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：WO2015183958A1
公开(公告)日：2015-12-03
申请号：PCT/US2015/032678
申请日：2015-05-27
Applicant: APPLE INC.
Inventor： ZHOU, Xiaosong , ZHAI, Jiefu , SU, Yeping , CHUNG, Chris, Y. , WU, Hsi-Jung
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码。 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：WO2014163867A2
公开(公告)日：2014-10-09
申请号：PCT/US2014/018285
申请日：2014-02-25
Applicant: APPLE INC.
Inventor： SU, Yeping , CHUNG, Chris, Y. , ZHOU, Xiaosong , NORMILE, James, Oliver , WU, Hsi-Jung , JANSEN, Thomas , JEONG, Hyeonkuk , ABUAN, Joe, S. , PRICE, Douglas, Scott
IPC: H04N21/2343
CPC classification number: H04N21/234372 , H04N21/23439 , H04N21/2381 , H04N21/4384 , H04N21/44004
Abstract: A video streaming method for transitioning between multiple sequences of coded video data may include receiving and decoding transmission units from a first sequence of coded video data. In response to a request to transition to a second sequence of coded video data, the method may determine whether a time to transition to the second sequence of coded video data can be reduced by transitioning to the second sequence of coded video data via an intermediate sequence of coded video data. If the time can be reduced, the method may include receiving at least one transmission unit from an intermediate sequence of coded video data that corresponds to the request to transition, decoding the transmission unit from the intermediate sequence, and transitioning from the first sequence to the second sequence via the decoded transmission unit from the intermediate sequence.
Abstract translation: 用于在多个编码视频数据序列之间转换的视频流方法可以包括从第一编码视频数据序列接收和解码传输单元。 响应于转换到第二编码视频数据序列的请求，该方法可以通过经由中间序列转换到第二编码视频数据序列来确定是否可以减少转换到第二编码视频数据序列的时间 的编码视频数据。 如果可以减少时间，则该方法可以包括从与转换请求对应的编码视频数据的中间序列接收至少一个传输单元，从中间序列解码传输单元，以及从第一序列转换到 通过来自中间序列的解码传输单元的第二序列。
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