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公开(公告)号：US20150279330A1
公开(公告)日：2015-10-01
申请号：US14673824
申请日：2015-03-30
Applicant: Apple Inc.
Inventor： Krasimir D. Kolarov , Steven E. Saunders
IPC: G09G5/14 , G06F3/0484
CPC classification number: G09G5/14 , G06F3/04845 , G06F2203/04803 , H04N5/265 , H04N17/00 , H04N17/004 , H04N19/154
Abstract: A video quality comparison tool provides for direct visual perceptual comparison of video sequences. Two inputs are presented at the same position and size, with no-look user choice of which to see and easy back-and-forth comparison while the videos are playing, single-stepping, or paused.
Abstract translation: 视频质量比较工具提供视频序列的直观视觉感知比较。 两个输入以相同的位置和大小呈现，在视频播放，单步或暂停时，无需查看用户选择和容易的前后比较。
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公开(公告)号：US20200380290A1
公开(公告)日：2020-12-03
申请号：US16428577
申请日：2019-05-31
Applicant: Apple Inc.
Inventor： Pranav SODHANI , Steven E. Saunders , Bjorn Hori , Rahul Gopalan , Krasimir Kolarov , Samira Tavakoli
IPC: G06K9/46 , H04N17/00 , H04N19/154 , G06K9/00 , G06N20/00
Abstract: Systems and Methods disclosed for measuring a similarity between the input and the output of computing systems and communications channels. Techniques disclosed provide for low complexity prediction method of a perceptual video quality (PVQ) score, which may be used to design and tune performance of the computing systems and communications channels.
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13.发明申请METADATA HINTS TO SUPPORT BEST EFFORT DECODING FOR GREEN MPEG APPLICATIONS 审中-公开元数据提示支持绿色MPEG应用程序的最佳效果解码公开(公告)号：US20160105675A1
公开(公告)日：2016-04-14
申请号：US14687316
申请日：2015-04-15
Applicant: Apple Inc.
Inventor： Alexandros Tourapis , David W. Singer , Krasimir D. Kolarov , Steven E. Saunders , Guy Cote , Sorin Cismas
IPC: H04N19/156 , H04N19/172 , H04N19/105 , H04N19/154
CPC classification number: H04N19/156 , H04N19/105 , H04N19/12 , H04N19/147 , H04N19/154 , H04N19/172 , H04N19/196 , H04N19/44 , H04N19/46
Abstract: In a coding system, an encoder codes video data according to a predetermined protocol, which, when decoded causes an associated decoder to perform a predetermined sequence of decoding operations. The encoder may perform local decodes of the coded video data, both in the manner dictated by the coding protocol that is at work and also by one or more alternative decoding operations. The encoder may estimate relative performance of the alternative decoding operations as compared to a decoding operation that is mandated by the coding protocol. The encoder may provide identifiers in metadata that is associated with the coded video data to identify such levels of distortion and/or levels of resources conserved. A decoder may refer to such identifiers when determining when to engage alternative decoding operations as may be warranted under resource conservation policies.
Abstract translation: 在编码系统中，编码器根据预定的协议对视频数据进行编码，当预定协议被解码时，相关解码器执行预定的解码操作序列。 编码器可以以由正在工作的编码协议所指定的方式以及通过一个或多个替代解码操作来执行编码视频数据的本地解码。 与由编码协议强制的解码操作相比，编码器可以估计替代解码操作的相对性能。 编码器可以提供与编码的视频数据相关联的元数据中的标识符，以识别所保存的资源的失真和/或资源级别。 当确定什么时候参与在资源节约策略下可能需要的替代解码操作时，解码器可以参考这样的标识符。
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公开(公告)号：US20140354826A1
公开(公告)日：2014-12-04
申请号：US13903652
申请日：2013-05-28
Applicant: Apple Inc.
Inventor： Krasimir D . Kolarov , Steven E. Saunders
IPC: H04N17/00
CPC classification number: G11B27/031 , G06K9/00718 , G06K9/52 , G06K9/6202 , G06T5/00 , G06T7/0002 , G06T2207/30168 , H04N17/002 , H04N17/004 , H04N19/426
Abstract: Devices and methods for determining image quality using full-reference and non-reference techniques. Full reference image quality may be determined prior to output of an image or video frame from an image sensor processor by temporarily retaining image data from the image sensor and comparing processed image data of the image to the retained, non-processed image data of the same image. Full reference image quality determination may be assisted by a heuristic-based fault indicator. Image quality may also be determined by a non-reference technique of matching the image to one of various scenarios that are associated with sets of heuristics and applying the heuristics of the particular scenario to the image. Instead of relying on a nominal frame rate, video timing quality may be determined by comparing the capture time interval between successive video frames to the presentation time interval of the same video frames.
Abstract translation: 使用全参考和非参考技术确定图像质量的设备和方法。 可以在从图像传感器处理器输出图像或视频帧之前通过临时保留来自图像传感器的图像数据并将图像的处理后的图像数据与保持的未处理的图像数据进行比较来确定完整参考图像质量 图片。 完全参考图像质量确定可以通过基于启发式的故障指示器来辅助。 图像质量也可以通过将图像匹配到与启发式集合相关联的各种场景之一并将特定场景的启发式应用于图像的非参考技术来确定。 可以通过将连续视频帧之间的捕获时间间隔与相同视频帧的呈现时间间隔进行比较来确定视频定时质量。
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公开(公告)号：US20190172494A1
公开(公告)日：2019-06-06
申请号：US16252425
申请日：2019-01-18
Applicant: Apple Inc.
Inventor： Krasimir D. Kolarov , Steven E. Saunders
IPC: G11B27/031 , H04N17/00 , G06K9/00 , G06K9/52 , G06K9/62 , G06T7/00 , G06T5/00 , H04N19/426
Abstract: Devices and methods for determining image quality using full-reference and non-reference techniques. Full reference image quality may be determined prior to output of an image or video frame from an image sensor processor by temporarily retaining image data from the image sensor and comparing processed image data of the image to the retained, non-processed image data of the same image. Full reference image quality determination may be assisted by a heuristic-based fault indicator. Image quality may also be determined by a non-reference technique of matching the image to one of various scenarios that are associated with sets of heuristics and applying the heuristics of the particular scenario to the image. Instead of relying on a nominal frame rate, video timing quality may be determined by comparing the capture time interval between successive video frames to the presentation time interval of the same video frames.
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Patent Agency Ranking
公开(公告)号：US20180068195A1
公开(公告)日：2018-03-08
申请号：US15258501
申请日：2016-09-07
Applicant: Apple, Inc.
Inventor： Krasimir D. Kolarov , Bjorn S. Hori , Rahul Gopalan , Steven E. Saunders
CPC classification number: G06K9/036 , G06K9/00577 , G06K9/6201 , G06K9/628 , G06K2009/6213 , G06T7/0002 , G06T7/11 , G06T7/80 , G06T2207/10016 , G06T2207/10024 , G06T2207/30168
Abstract: A video quality assessment method may include frame-by-frame analysis of a test video sequence (often compressed) with its original (reference) counterpart, pre-conditioning elements of the test and reference frames, defining a region of interest in the pre-conditioned test frame and estimating relative errors within the region of interest between the test and reference frame, filtering the estimated errors of the region of interest temporally across adjacent frames within a perpetually relevant time window, aggregating the filtered errors within the time window, ranking the aggregated errors, selecting a subset of the ranked errors, aggregating across the selected subset of errors, and inputting said aggregated error to a quality assessment system to determine a quality classification along with an estimated quality assessment.
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公开(公告)号：US20160373960A1
公开(公告)日：2016-12-22
申请号：US15186138
申请日：2016-06-17
Applicant: Apple Inc.
Inventor： Steven E. Saunders , Alexandros Michael Tourapis , Krasimir Kolarov
CPC classification number: H04W28/04 , G06F1/3212 , H04L43/16 , H04N19/44 , H04N19/85 , H04W52/0277 , Y02D70/00
Abstract: A method includes sampling a common signal over a plurality of iterations, concatenating the sampled iterations, summing samples of the concatenated iterations within a window of a predetermined sample width, at each of a plurality of window positions along the concatenated iterations, and estimating noise of the common signal from the summed sample values at the window positions.
Abstract translation: 一种方法包括在多个迭代中对公共信号进行采样，将采样的迭代级联，在预定采样宽度的窗口内的级联迭代的样本在沿着级联迭代的多个窗口位置的每一个处求和，估计噪声 来自窗口位置处求和样本值的公共信号。
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公开(公告)号：US11259058B2
公开(公告)日：2022-02-22
申请号：US16814278
申请日：2020-03-10
Applicant: Apple Inc.
Inventor： Simon Goldrei , Steven E. Saunders , Roger N. Pantos , John Matienzo
IPC: H04N7/173 , H04N21/2389 , H04N21/24 , H04N21/2187 , H04N21/845 , H04N21/234 , H04N21/233 , H04N21/8358
Abstract: Techniques are disclosed for measuring propagation delay of a media distribution system based on content output by rendering devices. An output from an output device of the media distribution system may be captured and a token may be detected from the captured content. A timecode may be derived from the detected token. The system's propagation delay may be determined from the derived timecode and may provide a basis to analyze system delays and other processing artifacts. In this manner, propagation artifacts may be estimated between multiple rendering devices that lack controls to synchronize their operation.
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公开(公告)号：US10185884B2
公开(公告)日：2019-01-22
申请号：US15258501
申请日：2016-09-07
Applicant: Apple, Inc.
Inventor： Krasimir D. Kolarov , Bjorn S. Hori , Rahul Gopalan , Steven E. Saunders
Abstract: A video quality assessment method may include frame-by-frame analysis of a test video sequence (often compressed) with its original (reference) counterpart, pre-conditioning elements of the test and reference frames, defining a region of interest in the pre-conditioned test frame and estimating relative errors within the region of interest between the test and reference frame, filtering the estimated errors of the region of interest temporally across adjacent frames within a perpetually relevant time window, aggregating the filtered errors within the time window, ranking the aggregated errors, selecting a subset of the ranked errors, aggregating across the selected subset of errors, and inputting said aggregated error to a quality assessment system to determine a quality classification along with an estimated quality assessment.
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公开(公告)号：US20180376369A1
公开(公告)日：2018-12-27
申请号：US16119900
申请日：2018-08-31
Applicant: Apple Inc.
Inventor： Steven E. Saunders , Alexandros Tourapis , Krasimir Kolarov
CPC classification number: H04W28/04 , G06F1/3212 , H04L43/16 , H04N19/44 , H04N19/85 , H04W52/0277 , Y02D10/174 , Y02D70/00
Abstract: A method includes sampling a common signal over a plurality of iterations, concatenating the sampled iterations, summing samples of the concatenated iterations within a window of a predetermined sample width, at each of a plurality of window positions along the concatenated iterations, and estimating noise of the common signal from the summed sample values at the window positions.
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