公开(公告)号：US12075093B2

公开(公告)日：2024-08-27

申请号：US17951792

申请日：2022-09-23

Applicant: Apple Inc.

Inventor： Alexandros Tourapis ,  Hye-Yeon Cheong ,  David William Singer ,  Dominik Mehlem

IPC: H04N19/66 ,  H04N19/147 ,  H04N19/176 ,  H04N19/19 ,  H04N19/61 ,  G06T7/11 ,  G06T7/12

CPC classification number: H04N19/66 ,  H04N19/147 ,  H04N19/176 ,  H04N19/19 ,  H04N19/61 ,  G06T7/11 ,  G06T7/12

Abstract: A system comprises an encoder configured to compress media objects using a compression loop that includes a residual decomposition component that decomposes a residual signal for a block of the media object being compressed into multiple sub-error signals. The encoder is further configured to enable different transformation and/or quantization processes to be specified to be applied to different ones of the sub-errors. A corresponding decoder is configured to apply inverse transformation/quantization processing to the sub-error signals, based on the transformation/quantization processes that were applied at the encoder. The decoder then re-creates a residual signal from the processed sub-error signals and uses the re-created residual signal to correct predicted values at the decoder.

公开(公告)号：US20230009225A1

公开(公告)日：2023-01-12

申请号：US17951792

申请日：2022-09-23

Applicant: Apple Inc.

Inventor： Alexandros Tourapis ,  Hye-Yeon Cheong ,  David William Singer ,  Dominik Mehlem

IPC: H04N19/66 ,  H04N19/61 ,  H04N19/176 ,  H04N19/19 ,  H04N19/147

Abstract: A system comprises an encoder configured to compress media objects using a compression loop that includes a residual decomposition component that decomposes a residual signal for a block of the media object being compressed into multiple sub-error signals. The encoder is further configured to enable different transformation and/or quantization processes to be specified to be applied to different ones of the sub-errors. A corresponding decoder is configured to apply inverse transformation/quantization processing to the sub-error signals, based on the transformation/quantization processes that were applied at the encoder. The decoder then re-creates a residual signal from the processed sub-error signals and uses the re-created residual signal to correct predicted values at the decoder.

公开(公告)号：US20180324326A1

公开(公告)日：2018-11-08

申请号：US16034272

申请日：2018-07-12

Applicant: Apple Inc.

Inventor： Alexandros Michael Tourapis ,  Yeping Su ,  David William Singer ,  Hsi-Jung Wu

IPC: H04N1/60 ,  H04N19/85 ,  H04N19/186 ,  H04N9/67 ,  H04N19/46

CPC classification number: H04N1/6005 ,  H04N1/6058 ,  H04N9/67 ,  H04N19/186 ,  H04N19/46 ,  H04N19/85

Abstract: Image and video processing techniques are disclosed for processing components of a color space individually by determining limits for each component based on the relationship between each component in a color space. These limits may then be used to clip each component such that the component values are within the determined range for that component. In this manner, more efficient processing of images and/or video may be achieved.

公开(公告)号：US10123037B2

公开(公告)日：2018-11-06

申请号：US15377885

申请日：2016-12-13

Applicant: Apple Inc.

Inventor： Barin Geoffry Haskell ,  David William Singer ,  Adriana Dumitras ,  Atul Puri

IPC: H04N7/18 ,  H04N19/52 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/51 ,  H04N19/513 ,  H04N19/196 ,  H04N19/15 ,  H04N19/61 ,  H04N19/107 ,  H04N19/463 ,  H04N19/124 ,  H04N19/152 ,  H04N19/48 ,  H04N19/40 ,  H04N19/577 ,  H04N19/13 ,  H04N19/137 ,  H04N19/139 ,  H04N19/146 ,  H04N19/132 ,  H04N19/587 ,  H04N19/625 ,  H04N19/172

Abstract: A method and apparatus for performing motion estimation in a digital video system is disclosed. Specifically, the present invention discloses a system that quickly calculates estimated motion vectors in a very efficient manner. In one embodiment, a first multiplicand is determined by multiplying a first display time difference between a first video picture and a second video picture by a power of two scale value. This step scales up a numerator for a ratio. Next, the system determines a scaled ratio by dividing that scaled numerator by a second first display time difference between said second video picture and a third video picture. The scaled ratio is then stored calculating motion vector estimations. By storing the scaled ratio, all the estimated motion vectors can be calculated quickly with good precision since the scaled ratio saves significant bits and reducing the scale is performed by simple shifts.

公开(公告)号：US20160309059A1

公开(公告)日：2016-10-20

申请号：US14875432

申请日：2015-10-05

Applicant: Apple Inc.

Inventor： Alexandros Michael Tourapis ,  Yeping Su ,  David William Singer ,  Hsi-Jung Wu

IPC: H04N1/60

CPC classification number: H04N1/6005 ,  H04N1/6058 ,  H04N9/67 ,  H04N19/186 ,  H04N19/46 ,  H04N19/85

Abstract: Image and video processing techniques are disclosed for processing components of a color space individually by determining limits for each component based on the relationship between each component in a color space. These limits may then be used to clip each component such that the component values are within the determined range for that component. In this manner, more efficient processing of images and/or video may be achieved.

Abstract translation: 公开了图像和视频处理技术，用于通过基于颜色空间中的每个组件之间的关系确定每个组件的限制来单独地处理颜色空间的组件。 然后可以使用这些限制来剪切每个组件，使得组件值在该组件的确定的范围内。 以这种方式，可以实现图像和/或视频的更有效的处理。

公开(公告)号：US20160269739A1

公开(公告)日：2016-09-15

申请号：US15067041

申请日：2016-03-10

Applicant: Apple Inc.

Inventor： Alexandros Michael Tourapis ,  Yeping Su ,  David William Singer ,  Hsi-Jung Wu

IPC: H04N19/517 ,  H04N19/40 ,  H04N19/152 ,  H04N19/117 ,  H04N19/147 ,  H04N19/86 ,  H04N19/44

CPC classification number: H04N19/517 ,  H04N19/117 ,  H04N19/132 ,  H04N19/147 ,  H04N19/152 ,  H04N19/182 ,  H04N19/186 ,  H04N19/40 ,  H04N19/44 ,  H04N19/59 ,  H04N19/70 ,  H04N19/82 ,  H04N19/86

Abstract: A video coding system may include an encoder performs motion-compensated prediction on a video signal in a second format converted from an input format of the video signal. The video coding system may also include a decoder to decode portions of the encoded video, and a filtering system that filters portions of the decoded video, for example, by deblocking filtering or SAO filtering, using parameters derived from the video signal in the input format. A prediction system may include another format converter that converts the decoded video to the input format. The prediction system may select parameters of the motion-compensated prediction based at least in part on a comparison of the video signal in the input format to decoded video in the input format.

Abstract translation: 视频编码系统可以包括编码器以视频信号的输入格式转换的第二格式的视频信号执行运动补偿预测。 视频编码系统还可以包括解码器，用于对编码视频的部分进行解码;以及滤波系统，其使用从输入格式的视频信号导出的参数，例如通过解块滤波或SAO滤波来对部分解码视频进行滤波 。 预测系统可以包括将解码的视频转换为输入格式的另一格式转换器。 所述预测系统可以至少部分地基于输入格式的视频信号与输入格式的解码视频的比较来选择运动补偿预测的参数。

公开(公告)号：US11496770B2

公开(公告)日：2022-11-08

申请号：US17127921

申请日：2020-12-18

Applicant: Apple Inc.

Inventor： Alexandros Tourapis ,  Hye-Yeon Cheong ,  David William Singer ,  Dominik Mehlem

IPC: H04N19/66 ,  H04N19/61 ,  H04N19/176 ,  H04N19/19 ,  H04N19/147 ,  G06T7/11 ,  G06T7/12

Abstract: A system includes an encoder configured to compress media objects using a compression loop that includes a residual decomposition component that decomposes a residual signal for a block of the media object being compressed into multiple sub-error signals. The encoder is further configured to enable different transformation and/or quantization processes to be specified to be applied to different ones of the sub-errors. A corresponding decoder is configured to apply inverse transformation/quantization processing to the sub-error signals, based on the transformation/quantization processes that were applied at the encoder. The decoder then re-creates a residual signal from the processed sub-error signals and uses the re-created residual signal to correct predicted values at the decoder.

公开(公告)号：US20210195246A1

公开(公告)日：2021-06-24

申请号：US17127921

申请日：2020-12-18

Applicant: Apple Inc.

Inventor： Alexandros Tourapis ,  Hye-Yeon Cheong ,  David William Singer ,  Dominik Mehlem

IPC: H04N19/66 ,  H04N19/61 ,  H04N19/147 ,  H04N19/19 ,  H04N19/176

Abstract: A system comprises an encoder configured to compress media objects using a compression loop that includes a residual decomposition component that decomposes a residual signal for a block of the media object being compressed into multiple sub-error signals. The encoder is further configured to enable different transformation and/or quantization processes to be specified to be applied to different ones of the sub-errors. A corresponding decoder is configured to apply inverse transformation/quantization processing to the sub-error signals, based on the transformation/quantization processes that were applied at the encoder. The decoder then recreates a residual signal from the processed sub-error signals and uses the re-created residual signal to correct predicted values at the decoder.

公开(公告)号：US10602025B2

公开(公告)日：2020-03-24

申请号：US16034272

申请日：2018-07-12

Applicant: Apple Inc.

Inventor： Alexandros Michael Tourapis ,  Yeping Su ,  David William Singer ,  Hsi-Jung Wu

IPC: H04N1/60 ,  H04N9/67 ,  H04N19/46 ,  H04N19/186 ,  H04N19/85

Abstract: Image and video processing techniques are disclosed for processing components of a color space individually by determining limits for each component based on the relationship between each component in a color space. These limits may then be used to clip each component such that the component values are within the determined range for that component. In this manner, more efficient processing of images and/or video may be achieved.

公开(公告)号：US10148970B2

公开(公告)日：2018-12-04

申请号：US14599285

申请日：2015-01-16

Applicant: Apple Inc.

Inventor： Barin Geoffry Haskell ,  David William Singer ,  Thomas Pun ,  Hsi-Jung Wu ,  James Oliver Normile

IPC: H04N19/30 ,  H04N21/2343 ,  H04N21/2389 ,  H04N21/2662 ,  H04N21/4385 ,  H04N21/647 ,  H04N21/658 ,  H04N21/845 ,  H04N19/46 ,  H04N19/196 ,  H04N19/61 ,  H04N19/132 ,  H04N19/187 ,  H04N19/33

Abstract: Scalable video coding and multiplexing compatible with non-scalable decoders is disclosed. In some embodiments, video data is received and encoded in a manner that renders at least a base layer to be compatible with a non-scalable video encoding standard, including by assigning for at least the base layer default values to one or more scalability parameters. In some embodiments, video data is received and encoded to produce an encoded video data that includes a base layer that conforms to a non-scalable video encoding standard and one or more subordinate non-scalable layers, which subordinate non-scalable layers do not by themselves conform to the non-scalable video encoding standard but which can he combined with the base layer to produce a result that does conform to the non-scalable video encoding standard, such that the result can be decoded by a non-scalable decoder. An identification data identifying those portions of the encoded video data that are associated with a subordinate non-scalable layer is included in the encoded video data.