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1. 发明申请

US20170357871A1 Hierarchical Sharpness Evaluation 审中-公开
公开(公告)号：US20170357871A1
公开(公告)日：2017-12-14
申请号：US15618909
申请日：2017-06-09
申请人： Apple Inc.
发明人： Jiefu Zhai , Ke Zhang , Yunfei Zheng , Shujie Liu , Albert Keinath , Xiaosong Zhou , Chris Chung , Hsi-Jung Wu
IPC分类号： G06K9/46 , G06K9/62 , G06K9/00
CPC分类号： G06K9/4642 , G06K9/00711 , G06K9/03 , G06K9/52 , G06K9/6256 , G06K9/6267 , G06K9/627
摘要： Techniques are disclosed for estimating quality of images in an automated fashion. According to these techniques, a source image may be downsampled to generate at least two downsampled images at different levels of downsampling. Blurriness of the images may be estimated starting with a most-heavily downsampled image. Blocks of a given image may be evaluated for blurriness and, when a block of a given image is estimated to be blurry, the block of the image and co-located blocks of higher resolution image(s) may be designated as blurry. Thereafter, a blurriness score may be calculated for the source image from the number of blocks of the source image designated as blurry.

2. 发明申请

US20160358628A1 HIERARCHICAL SEGMENTATION AND QUALITY MEASUREMENT FOR VIDEO EDITING 审中-公开
标题翻译：视频编辑的分层分类和质量测量
公开(公告)号：US20160358628A1
公开(公告)日：2016-12-08
申请号：US15173465
申请日：2016-06-03
申请人： Apple Inc.
发明人： Shujie Liu , Yunfei Zheng , Xiaosong Zhou , Hsi-Jung Wu , Ke Zhang , Albert E. Keinath , Chris Y. Chung
IPC分类号： G11B27/031 , G06K9/00
CPC分类号： G11B27/031 , G06K9/00718 , G06K9/00751 , G06K9/00765
摘要： Methods for organizing media data by automatically segmenting media data into hierarchical layers of scenes are described. The media data may include metadata and content having still image, video or audio data. The metadata may be content-based (e.g., differences between neighboring frames, exposure data, key frame identification data, motion data, or face detection data) or non-content-based (e.g., exposure, focus, location, time) and used to prioritize and/or classify portions of video. The metadata may be generated at the time of image capture or during post-processing. Prioritization information, such as a score for various portions of the image data may be based on the metadata and/or image data. Classification information such as the type or quality of a scene may be determined based on the metadata and/or image data. The classification and prioritization information may be metadata and may be used to organize the media data.
摘要翻译：描述了通过将媒体数据自动分割成层级的场景来组织媒体数据的方法。媒体数据可以包括具有静止图像，视频或音频数据的元数据和内容。元数据可以是基于内容的（例如，相邻帧之间的差异，曝光数据，关键帧识别数据，运动数据或面部检测数据）或非基于内容的（例如，曝光，焦点，位置，时间）并且被使用对视频的部分进行优先排序和/或分类。元数据可以在图像捕获时或在后处理期间生成。诸如图像数据的各个部分的得分的优先级信息可以基于元数据和/或图像数据。可以基于元数据和/或图像数据来确定诸如场景的类型或质量的分类信息。分类和优先化信息可以是元数据，并且可以用于组织媒体数据。

3. 发明申请

US20160357605A1 Media Analysis and Processing Framework on a Resource Restricted Device 审中-公开
标题翻译：资源限制设备上的媒体分析和处理框架
公开(公告)号：US20160357605A1
公开(公告)日：2016-12-08
申请号：US15173047
申请日：2016-06-03
申请人： Apple Inc.
发明人： Albert Keinath , Ke Zhang , Yunfei Zheng , Shujie Liu , Jiefu Zhai , Chris Y. Chung , Xiaosong Zhou , Hsi-Jung Wu
IPC分类号： G06F9/50 , H04L29/08 , G06F9/48
CPC分类号： G06F9/5011 , G06F9/46 , G06F9/4881 , H04L67/34 , H04N21/41407 , H04N21/4433
摘要： A system for processing media on a resource restricted device, the system including a memory to store data representing media assets and associated descriptors, and program instructions representing an application and a media processing system, and a processor to execute the program instructions, wherein the program instructions represent the media processing system, in response to a call from an application defining a plurality of services to be performed on an asset, determine a tiered schedule of processing operations to be performed upon the asset based on a processing budget associated therewith, and iteratively execute the processing operations on a tier-by-tier basis, unless interrupted.
摘要翻译：一种用于在资源受限设备上处理媒体的系统，所述系统包括用于存储表示媒体资产和相关联描述符的数据的存储器，以及表示应用和媒体处理系统的程序指令以及执行所述程序指令的处理器，其中所述程序指令代表媒体处理系统，响应于来自定义要在资产上执行的多个服务的应用的呼叫，基于与其相关联的处理预算来确定要在资产上执行的处理操作的分层调度，并且迭代地除非中断，否则逐级执行处理操作。

4. 发明授权

US09432694B2 Signal shaping techniques for video data that is susceptible to banding artifacts 有权
标题翻译：对易受条带伪像影响的视频数据的信号整形技术
公开(公告)号：US09432694B2
公开(公告)日：2016-08-30
申请号：US13631428
申请日：2012-09-28
申请人： Apple Inc.
发明人： Yeping Su , Hao Pan , Ke Zhang , Douglas Scott Price , James Oliver Normile , Hsi-Jung Wu
IPC分类号： H04N19/577 , H04N19/139 , H04N19/172 , H04N19/149 , H04N19/15 , H04N19/107 , H04N19/117 , H04N19/124 , H04N19/154 , H04N19/156 , H04N19/192 , H04N19/58 , H04N19/46
CPC分类号： 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
摘要： Video coding systems and methods protect against banding artifacts in decoded image content. According to the method, a video coder may identify, from content of pixel blocks of a frame of video data, which pixel blocks are likely to exhibit banding artifacts from the video coding/decoding processes. The video coder may assemble regions of the frame that are likely to exhibit banding artifacts based on the identified pixel blocks' locations with respect to each other. The video coder may apply anti-banding processing to pixel blocks within one or more of the identified regions and, thereafter, may code the processed frame by a compression operation.
摘要翻译：视频编码系统和方法保护解码图像内容中的带状伪像。根据该方法，视频编码器可以根据视频数据帧的像素块的内容从视频编码/解码处理中识别哪些像素块可能呈现带状伪像。视频编码器可以基于所识别的像素块相对于彼此的位置来组合可能呈现带状伪影的帧的区域。视频编码器可以对所识别的一个或多个区域内的像素块应用反绑带处理，然后可以通过压缩操作来对经处理的帧进行编码。

5. 发明申请

US20160127738A1 TECHNIQUES IN BACKWARDS COMPATIBLE MULTI-LAYER COMPRESSION OF HDR VIDEO 有权
标题翻译：背景技术兼容HDR视频的多层压缩
公开(公告)号：US20160127738A1
公开(公告)日：2016-05-05
申请号：US14704707
申请日：2015-05-05
申请人： Apple Inc.
发明人： Yeping Su , Chris Y. Chung , Hsi-Jung Wu , Jiefu Zhai , Ke Zhang , Xiaosong Zhou
IPC分类号： H04N19/503 , H04N19/172 , H04N19/124
CPC分类号： H04N19/503 , H04N19/124 , H04N19/147 , H04N19/172 , H04N19/30
摘要： 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.
摘要翻译：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础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。

6. 发明申请

US20150326896A1 TECHNIQUES FOR HDR/WCR VIDEO CODING 审中-公开
标题翻译： HDR / WCR视频编码技术
公开(公告)号：US20150326896A1
公开(公告)日：2015-11-12
申请号：US14710520
申请日：2015-05-12
申请人： Apple Inc.
发明人： Yeping Su , Jiefu Zhai , Ke Zhang , Xiaosong Zhou , Hsi-Jung Wu , Chris Y. Chung
IPC分类号： H04N21/2343 , H04N21/2385 , H04N21/438 , H04N19/184 , H04N21/4402 , H04N19/50 , H04N19/186 , H04N21/234 , H04N21/44
CPC分类号： H04N19/30 , H04N19/46
摘要： Systems and methods are provided for processing high quality video data, such as data having a higher than standard bit depth, a high dynamic range, or a wide or custom color gamut, to be compatible with conventional encoders and decoders without significant loss of quality. High quality data is encoded into a plurality of layers with a base layer having the standard quality data and one or more higher quality layers. Decoding systems and methods may map the base layer to the dynamic range or color gamut of the enhancement layer, combine the layers, and map the combined layers to a dynamic range or color gamut appropriate for the target display. Each of the standard quality and the high quality data may be encoded as a plurality of tiers of increasing quality and reference lower level tiers as sources of prediction during predictive coding.
摘要翻译：提供了用于处理高质量视频数据的系统和方法，例如具有高于标准位深度，高动态范围或宽或定制色域的数据，以与常规编码器和解码器兼容，而没有显着的质量损失。高质量数据被编码成具有基层的多层，具有标准质量数据和一个或多个更高质量的层。解码系统和方法可以将基本层映射到增强层的动态范围或色域，组合层，并将组合层映射到适合于目标显示的动态范围或色域。标准质量和高质量数据中的每一个可以被编码为增加质量的多个层级和作为预测编码期间的预测源的较低级别的参考。

7. 发明申请

US20130329781A1 TECHNIQUES FOR ADAPTIVE VIDEO STREAMING 有权
标题翻译：适应性视频流的技术
公开(公告)号：US20130329781A1
公开(公告)日：2013-12-12
申请号：US13631605
申请日：2012-09-28
申请人： APPLE INC.
发明人： Yeping Su , Hsi-Jung Wu , Hao Pan , Ke Zhang
IPC分类号： H04N7/26
CPC分类号： H04N19/10 , H04N21/23424 , H04N21/23439 , H04N21/242 , H04N21/8456
摘要： A vide coding server may code a common video sequence into a plurality of coded data streams, each coded data stream representing the video sequence coded using coding parameters tailored for a respective transmission bit rate. The coding may cause a set of transmission units from among the coded data streams to include coded video data from a common point of the video sequence, and a first coded frame of each transmission unit of the set to be a synchronization frame. A manifest file may be built representing an index of transmission units of the respective coded data streams. The coded data streams and manifest file may be stored by the server for delivery to a client device. During download and decode, the chunks may be decoded efficiently even when switching among streams because the first frame in each chunk is a synchronization frame.
摘要翻译：视频编码服务器可以将公共视频序列编码为多个编码数据流，每个编码数据流表示使用针对相应传输比特率定制的编码参数进行编码的视频序列。编码可以使得编码数据流中的一组传输单元包括来自视频序列的公共点的编码视频数据和作为同步帧的组的每个传输单元的第一编码帧。可以构建表示相应编码数据流的传输单元的索引的清单文件。编码数据流和清单文件可以由服务器存储以传送到客户端设备。在下载和解码期间，即使在每个块中的第一帧是同步帧时，即使切换流之间也可以有效地解码该块。

8. 发明申请

US20130235942A1 SIGNAL SHAPING TECHNIQUES FOR VIDEO DATA THAT IS SUSCEPTIBLE TO BANDING ARTIFACTS 有权
标题翻译：视频数据的信号形成技术无法阻挡装置
公开(公告)号：US20130235942A1
公开(公告)日：2013-09-12
申请号：US13631428
申请日：2012-09-28
申请人： APPLE INC.
发明人： Yeping Su , Hao Pan , Ke Zhang , Douglas Scott Price , James Oliver Normile , Hsi-Jung Wu
IPC分类号： H04N7/26
CPC分类号： 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
摘要： Video coding systems and methods protect against banding artifacts in decoded image content. According to the method, a video coder may identify, from content of pixel blocks of a frame of video data, which pixel blocks are likely to exhibit banding artifacts from the video coding/decoding processes. The video coder may assemble regions of the frame that are likely to exhibit banding artifacts based on the identified pixel blocks' locations with respect to each other. The video coder may apply anti-banding processing to pixel blocks within one or more of the identified regions and, thereafter, may code the processed frame by a compression operation.
摘要翻译：视频编码系统和方法保护解码图像内容中的带状伪像。根据该方法，视频编码器可以根据视频数据帧的像素块的内容从视频编码/解码处理中识别哪些像素块可能呈现带状伪影。视频编码器可以基于所识别的像素块相对于彼此的位置来组合可能呈现带状伪影的帧的区域。视频编码器可以对所识别的一个或多个区域内的像素块应用反绑带处理，然后可以通过压缩操作来对经处理的帧进行编码。

9. 发明授权

US10402677B2 Hierarchical sharpness evaluation 有权
公开(公告)号：US10402677B2
公开(公告)日：2019-09-03
申请号：US15618909
申请日：2017-06-09
申请人： Apple Inc.
发明人： Jiefu Zhai , Ke Zhang , Yunfei Zheng , Shujie Liu , Albert Keinath , Xiaosong Zhou , Chris Chung , Hsi-Jung Wu
IPC分类号： G06K9/00 , G06K9/46 , G06K9/62
摘要： Techniques are disclosed for estimating quality of images in an automated fashion. According to these techniques, a source image may be downsampled to generate at least two downsampled images at different levels of downsampling. Blurriness of the images may be estimated starting with a most-heavily downsampled image. Blocks of a given image may be evaluated for blurriness and, when a block of a given image is estimated to be blurry, the block of the image and co-located blocks of higher resolution image(s) may be designated as blurry. Thereafter, a blurriness score may be calculated for the source image from the number of blocks of the source image designated as blurry.

10. 发明授权

US10402226B2 Media analysis and processing framework on a resource restricted device 有权
公开(公告)号：US10402226B2
公开(公告)日：2019-09-03
申请号：US15173047
申请日：2016-06-03
申请人： Apple Inc.
发明人： Albert Keinath , Ke Zhang , Yunfei Zheng , Shujie Liu , Jiefu Zhai , Chris Y. Chung , Xiaosong Zhou , Hsi-Jung Wu
IPC分类号： G06F9/46 , G06F9/50 , G06F9/48 , H04L29/08 , H04N21/443 , H04N21/414
摘要： A system for processing media on a resource restricted device, the system including a memory to store data representing media assets and associated descriptors, and program instructions representing an application and a media processing system, and a processor to execute the program instructions, wherein the program instructions represent the media processing system, in response to a call from an application defining a plurality of services to be performed on an asset, determine a tiered schedule of processing operations to be performed upon the asset based on a processing budget associated therewith, and iteratively execute the processing operations on a tier-by-tier basis, unless interrupted.

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