公开(公告)号：US20150350687A1

公开(公告)日：2015-12-03

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: H04N19/86 ,  H04N19/80 ,  H04N19/44

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.

Abstract translation: 可以执行重构的视频样本的色度去块滤波以去除块状伪影并且减少颜色伪影而不会过度平滑。 在第一种方法中，可以对最小变换大小的边界样本执行色度解块，而与分区和编码模式无关。 在第二种方法中，当边界强度大于0时，可以执行色度去块。在第三种方法中，可以执行色度去块，而不管边界强度如何。 在第四种方法中，要执行的色度去块的类型可以通过标志在片头中发出信号。 此外，亮度去块滤波技术可以应用于色度去块滤波。

公开(公告)号：US20150350653A1

公开(公告)日：2015-12-03

申请号：US14288969

申请日：2014-05-28

Applicant: Apple Inc.

Inventor： Jae Hoon Kim ,  Shujie Liu ,  Dazhong Zhang ,  Xiaosong Zhou ,  Chris Y. Chung ,  Hsi-Jung Wu

IPC: H04N19/137 ,  H04N19/142 ,  H04N19/51

CPC classification number: H04N19/137 ,  H04N19/142 ,  H04N19/51 ,  H04N19/52

Abstract: An encoding system may include a video source that provides video data to be coded, a video coder, a transmitter, and a controller to manage operation of the system. The controller may control the video coder to code and compress the image information from the video source into video data, based upon one or more motion prediction parameters. The transmitter may transmit the video data. A decoding system may decode the video data based upon the motion prediction parameters.

Abstract translation: 编码系统可以包括提供要编码的视频数据的视频源，视频编码器，发射机和控制器，以管理系统的操作。 控制器可以基于一个或多个运动预测参数来控制视频编码器对来自视频源的图像信息进行编码和压缩成视频数据。 发射机可以发送视频数据。 解码系统可以基于运动预测参数解码视频数据。

公开(公告)号：US08923640B1

公开(公告)日：2014-12-30

申请号：US13913169

申请日：2013-06-07

Applicant: Apple Inc.

Inventor： Xiaosong Zhou ,  Hsi-Jung Wu ,  Chris Y. Chung ,  Albert E. Keinath ,  David R. Conrad ,  Yunfei Zheng ,  Dazhong Zhang ,  Jae Hoon Kim

IPC: G06K9/62 ,  H04N19/583

CPC classification number: H04N19/51 ,  H04N19/119 ,  H04N19/136 ,  H04N19/14 ,  H04N19/159 ,  H04N19/172 ,  H04N19/23 ,  H04N19/46

Abstract: The invention is directed to an efficient way for encoding and decoding video. Embodiments include identifying different coding units that share a similar characteristic. The characteristic can be, for example: quantization values, modes, block sizes, color space, motion vectors, depth, facial and non-facial regions, and filter values. An encoder may then group the units together as a coherence group. An encoder may similarly create a table or other data structure of the coding units. An encoder may then extract the commonly repeating characteristic or attribute from the coding units. The encoder may transmit the coherence groups along with the data structure, and other coding units which were not part of a coherence group. The decoder may receive the data, and utilize the shared characteristic by storing locally in cache, for faster repeated decoding, and decode the coherence group together.

Abstract translation: 本发明涉及用于对视频进行编码和解码的有效方式。 实施例包括识别共享相似特征的不同编码单元。 特征可以是例如：量化值，模式，块大小，颜色空间，运动矢量，深度，面部和非面部区域以及滤波器值。 然后，编码器可以将这些单元组合在一起作为一致性组。 编码器可以类似地创建编码单元的表或其他数据结构。 然后，编码器可以从编码单元中提取常见的重复特性或属性。 编码器可以连同数据结构以及不是相干组的一部分的其他编码单元一起发送相干组。 解码器可以接收数据，并通过将本地存储在高速缓存中来利用共享特性，以便更快的重复解码，并将相干组一起解码。

公开(公告)号：US20140064165A1

公开(公告)日：2014-03-06

申请号：US13667814

申请日：2012-11-02

Applicant: APPLE INC.

Inventor： Chris Y. Chung ,  Wen Zhao ,  Luciano M. Verger ,  Hyeonkuk Jeong ,  Gang Lu ,  Srinivasan Vasudevan ,  Xiaosong Zhou ,  Hsi-Jung Wu ,  James O. Normile

IPC: H04W52/02

CPC classification number: H04N7/15 ,  H04L12/1827 ,  H04L65/1069 ,  H04N5/23241 ,  H04N5/372 ,  H04W52/02 ,  H04W52/0209 ,  H04W52/0216 ,  Y02D70/00 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/168 ,  Y02D70/24

Abstract: In video conferencing over a radio network, the radio equipment is a major power consumer especially in cellular networks such as LTE. In order to reduce the radio power consumption in video conferencing, it is important to introduce an enough radio inactive time. Several types of data buffering and bundling can be employed within a reasonable range of latency that doesn't significantly disrupt the real-time nature of video conferencing. In addition, the data transmission can be synchronized to the data reception in a controlled manner, which can result in an even longer radio inactive time and thus take advantage of radio power saving modes such as LTE C-DRX.

Abstract translation: 在无线电网络的视频会议中，无线电设备是主要的电力消费者，特别是在诸如LTE的蜂窝网络中。 为了降低视频会议中的无线电功耗，重要的是要引入足够的无线电时间。 几种类型的数据缓冲和捆绑可以在合理的延迟范围内使用，不会显着破坏视频会议的实时性质。 此外，可以以受控的方式将数据传输同步到数据接收，这可以导致更长的无线电时间，从而利用诸如LTE C-DRX之类的无线电节能模式。

公开(公告)号：US20130235931A1

公开(公告)日：2013-09-12

申请号：US13631689

申请日：2012-09-28

Applicant: APPLE INC.

Inventor： Yeping Su ,  Hsi-Jung Wu ,  Chris Y. Chung

IPC: H04N7/24 ,  H04N7/32

CPC classification number: H04N19/86 ,  H04N19/46

Abstract: A system and method is presented to mask artifacts with content-adaptive comfort noise. Encoder side analysis may determine initial comfort noise characteristics. Noise parameters may then be developed for each frame or sequence of frames that define comfort noise patches that mask the artifacts. At the decoder, a comfort noise patch can be fetched from memory or created based on the amplitude and spatial characteristics of the comfort noise specified in the noise parameters. The noise patch may additionally be scaled or otherwise adjusted to accommodate the capabilities and/or limitations of the specific decoder.

Abstract translation: 提出了一种系统和方法来掩盖具有内容自适应舒适噪声的伪影。 编码器侧分析可以确定初始舒适噪声特性。 然后，可以为定义可以掩蔽伪像的舒适噪声补丁的每个帧或帧序列开发噪声参数。 在解码器处，可以根据噪声参数中规定的舒适噪声的幅度和空间特征，从存储器中获取舒适噪声补丁或创建舒适噪声补丁。 另外可以对噪声补丁进行缩放或调整以适应特定解码器的能力和/或限制。