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公开(公告)号：US10992919B2
公开(公告)日：2021-04-27
申请号：US16725245
申请日：2019-12-23
Applicant: Apple Inc.
Inventor： Jae Hoon Kim , Ming Chen , Xiaosong Zhou , Hsi-Jung Wu , Dazhong Zhang , Hang Yuan , Jiefu Zhai , Chris Y. Chung
IPC: H04N13/161 , H04N19/597 , H04N19/70 , H04N5/232 , H04N13/243 , H04N13/139
Abstract: Frame packing techniques are disclosed for multi-directional images and video. According to an embodiment, a multi-directional source image is reformatted into a format in which image data from opposing fields of view are represented in respective regions of the packed image as flat image content. Image data from a multi-directional field of view of the source image between the opposing fields of view are represented in another region of the packed image as equirectangular image content. It is expected that use of the formatted frame will lead to coding efficiencies when the formatted image is processed by predictive video coding techniques and the like.
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公开(公告)号：US10754242B2
公开(公告)日：2020-08-25
申请号：US15638848
申请日：2017-06-30
Applicant: Apple Inc.
Inventor： Jae Hoon Kim , Ming Chen , Xiaosong Zhou , Hsi-Jung Wu , Dazhong Zhang , Hang Yuan , Jiefu Zhai , Chris Y. Chung
IPC: G03B37/04 , G06T3/40 , H04N5/232 , H04N19/172 , H04N19/159 , G06T3/00 , H04N19/597 , H04N19/105 , H04N13/161
Abstract: Techniques are described for implementing format configurations for multi-directional video and for switching between them. Source images may be assigned to formats that may change during a coding session. When a change occurs between formats, video coders and decoder may transform decoded reference frames from the first format to the second format. Thereafter, new frames in the second configuration may be coded or decoded predictively using transformed reference frame(s) as source(s) of prediction. In this manner, video coders and decoders may use intra-coding techniques and achieve high efficiency in coding.
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公开(公告)号：US10536731B2
公开(公告)日：2020-01-14
申请号：US14710520
申请日：2015-05-12
Applicant: Apple Inc.
Inventor： Yeping Su , Jiefu Zhai , Ke Zhang , Xiaosong Zhou , Hsi-Jung Wu , Chris Y. Chung
IPC: H04N19/50 , H04N21/2343 , H04N21/234 , H04N21/2385 , H04N21/438 , H04N21/44 , H04N21/4402 , H04N19/186 , H04N19/184
Abstract: 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.
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公开(公告)号：US10298854B2
公开(公告)日：2019-05-21
申请号：US14726331
申请日：2015-05-29
Applicant: Apple Inc.
Inventor： Jiefu Zhai , Xiaosong Zhou , Chris Y. Chung , Hsi-Jung Wu
IPC: H04N5/235 , H04N5/232 , H04N19/176 , H04N19/115 , H04N19/154 , H04N19/117 , H04N19/14 , H04N19/156
Abstract: Systems and methods are provided for capturing high quality video data, including data having a high dynamic range, for use with conventional encoders and decoders. High dynamic range data is captured using multiple groups of pixels where each group is captured using different exposure times to create groups of pixels. The pixels that are captured at different exposure times may be determined adaptively based on the content of the image, the parameters of the encoding system, or on the available resources within the encoding system. The transition from single exposure to using two different exposure times may be implemented gradually.
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公开(公告)号：US10282633B2
公开(公告)日：2019-05-07
申请号：US15298777
申请日：2016-10-20
Applicant: Apple Inc.
Inventor： Shujie Liu , Jiefu Zhai , Chris Y. Chung , Hsi-Jung Wu , Yunfei Zheng , Albert E. Keinath , Xiaosong Zhou , Ke Zhang
Abstract: A method for processing media assets includes, given a first media asset, deriving characteristics from the first media asset, searching for other media assets having characteristics that correlate to the characteristics of the first media asset, when a match is found, deriving content corrections for the first media asset or a matching media asset from the other of the first media asset or the matching media asset, and correcting content of the first media asset or the matching media asset based on the content corrections.
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Patent Agency Ranking
公开(公告)号：US10038919B2
公开(公告)日：2018-07-31
申请号：US14290873
申请日：2014-05-29
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: H04N7/12 , 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：US20180184121A1
公开(公告)日：2018-06-28
申请号：US15390202
申请日：2016-12-23
Applicant: Apple Inc.
Inventor： Jae Hoon Kim , Xiaosong Zhou , Dazhong Zhang , Hang Yuan , Jiefu Zhai , Chris Y. Chung , Hsi-Jung Wu
IPC: H04N19/597 , H04N19/176 , H04N19/105
CPC classification number: H04N19/597 , H04N19/105 , H04N19/176 , H04N19/547
Abstract: Techniques are disclosed for coding video data predictively based on predictions made from spherical-domain projections of input pictures to be coded and reference pictures that are prediction candidates. Spherical projection of an input picture and the candidate reference pictures may be generated. Thereafter, a search may be conducted for a match between the spherical-domain representation of a pixel block to be coded and a spherical-domain representation of the reference picture. On a match, an offset may be determined between the spherical-domain representation of the pixel block to a matching portion of the of the reference picture in the spherical-domain representation. The spherical-domain offset may be transformed to a motion vector in a source-domain representation of the input picture, and the pixel block may be coded predictively with reference to a source-domain representation of the matching portion of the reference picture.
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公开(公告)号：US20170358059A1
公开(公告)日：2017-12-14
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
CPC classification number: G06T7/194 , G06K9/3233 , G06K9/346 , G06T7/11 , G06T2207/20132 , 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：US20160094823A1
公开(公告)日：2016-03-31
申请号：US14603109
申请日：2015-01-22
Applicant: Apple Inc.
Inventor： Jiefu Zhai , Yeping Su , Hsi-Jung Wu , Chris Y. Chung , Xiaosong Zhou , Ke Zhang
Abstract: An encoder may include a luma transform, a transformer, and a chroma transform. The luma transform may determine a linear luminance value based upon a plurality of primary color values of a pixel. The transformer may generate a transformed luminance value based upon the linear luminance value and a plurality of transformed color values based upon corresponding more than one of the primary color values of the pixel. The chroma transform may determine a plurality of chroma values based upon corresponding plurality of transformed color values and the transformed luminance value of the pixel.
Abstract translation: 编码器可以包括亮度变换，变压器和色度变换。 亮度变换可以基于像素的多个基色值来确定线性亮度值。 所述变压器可以基于所述线性亮度值和基于所述像素的主要颜色值中的多于一个的多个变换颜色值来生成经变换的亮度值。 色度变换可以基于对应的多个变换颜色值和像素的变换亮度值来确定多个色度值。
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公开(公告)号：US09264661B2
公开(公告)日：2016-02-16
申请号：US14082852
申请日：2013-11-18
Applicant: Apple Inc.
Inventor： Jiefu Zhai , Chris Y. Chung , Xiaosong Zhou , Hsi-Jung Wu
IPC: H04N7/14 , H04N19/117
CPC classification number: H04N7/141 , H04N19/117
Abstract: A system may include a receiver, a decoder, a post-processor, and a controller. The receiver may receive encoded video data. The decoder may decode the encoded video data. The post-processor may perform post-processing on frames of decoded video sequence from the decoder. The controller may adjust post-processing of a current frame, based upon at least one condition parameters detected at the system.
Abstract translation: 系统可以包括接收器，解码器，后处理器和控制器。 接收机可以接收编码的视频数据。 解码器可以解码编码的视频数据。 后处理器可以对来自解码器的解码视频序列的帧执行后处理。 控制器可以基于在系统处检测到的至少一个条件参数来调整当前帧的后处理。
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