公开(公告)号：US20140140410A1

公开(公告)日：2014-05-22

申请号：US13995182

申请日：2012-06-29

Applicant: Wenhao Zhang ,  Yi-Jen Chiu ,  Lidong Xu ,  Yu Han ,  Hong Jiang

Inventor： Wenhao Zhang ,  Yi-Jen Chiu ,  Lidong Xu ,  Yu Han ,  Hong Jiang

IPC: H04N19/30

CPC classification number: H04N19/63 ,  H04N19/30

Abstract: Methods, systems, and computer program products for the generation of multiple layers of scaled encoded video data compatible with the HEVC standard. Residue from prediction processing may be transformed into coefficients in the frequency domain. The coefficients may then be sampled to create a layer of encoded data. The coefficients may be sampled in different ways to create multiple respective layers. The layers may then be multiplexed and sent to a decoder. There, one or more of the layers may be chosen. The choice of certain layer(s) may be dependent on the desired attributes of the resulting video. A certain level of video quality, frame rate, resolution, and/or bit depth may be desired, for example. The coefficients in the chosen layers may then be assembled to create a version of the residue to be used in video decoding.

Abstract translation: 用于生成与HEVC标准兼容的多层缩放编码视频数据的方法，系统和计算机程序产品。 可以将来自预测处理的残差变换为频域中的系数。 然后可以对系数进行采样以创建编码数据层。 可以以不同的方式对系数进行采样以创建多个相应的层。 然后可以将这些层复用并发送到解码器。 在那里，可以选择一个或多个层。 某些层的选择可以取决于所得到的视频的期望属性。 例如，可能需要某种级别的视频质量，帧速率，分辨率和/或比特深度。 然后可以组合所选择的层中的系数以创建要在视频解码中使用的残余的版本。

公开(公告)号：US08620103B2

公开(公告)日：2013-12-31

申请号：US13466243

申请日：2012-05-08

Applicant: Yi-Jen Chiu ,  Lidong Xu

Inventor： Yi-Jen Chiu ,  Lidong Xu

IPC: G06K9/40

CPC classification number: H04N19/117 ,  H04N19/136 ,  H04N19/157 ,  H04N19/17 ,  H04N19/172 ,  H04N19/176 ,  H04N19/177 ,  H04N19/18 ,  H04N19/182 ,  H04N19/61 ,  H04N19/65 ,  H04N19/82 ,  H04N19/86

Abstract: A video encoder may use an adaptive Wiener filter inside the core video encoding loop to improve coding efficiency. In one embodiment, the Wiener filter may be on the input to a motion estimation unit and, in another embodiment, it may be on the output of a motion compensation unit. The taps for the Wiener filter may be determined based on characteristics of at least a region of pixel intensities within a picture. Thus, the filtering may be adaptive in that it varies based on the type of video being processed.

公开(公告)号：US20130266080A1

公开(公告)日：2013-10-10

申请号：US13994773

申请日：2011-10-01

Applicant: Ning Lu ,  Brian D. Rauchfuss ,  Sang-Hee Lee ,  Yi-Jen Chiu

Inventor： Ning Lu ,  Brian D. Rauchfuss ,  Sang-Hee Lee ,  Yi-Jen Chiu

IPC: H04N7/26

CPC classification number: H04N19/85 ,  H04N19/40 ,  H04N19/86

Abstract: Methods, systems and computer program products to increase the efficiency of a trancoding system by providing additional data from a video processor to an encoder, and by providing control signals from the encoder back to the video processor. The video processor may provide variances to the encoder, where these values would not otherwise be available to the encoder or would be computationally intensive for the encoder to generate on its own. The encoder may then use these variances to generate encoded, compressed video data more efficiently. The encoder may also generate control signals for use by the video processor, enabling the video processor to adapt to reconfigurations of the encoder, thereby improving the efficiency of the transcoding operation.

Abstract translation: 方法，系统和计算机程序产品，通过从视频处理器向编码器提供附加数据，以及通过将编码器的控制信号提供给视频处理器来提高转码系统的效率。 视频处理器可以向编码器提供方差，其中这些值否则将不适用于编码器，或者对于编码器来说，它们对于编码器来说将是计算密集型的。 然后，编码器可以使用这些方差更有效地生成经编码的压缩视频数据。 编码器还可以产生视频处理器使用的控制信号，使视频处理器能够适应编码器的重新配置，从而提高转码操作的效率。

公开(公告)号：US08447130B2

公开(公告)日：2013-05-21

申请号：US11967754

申请日：2007-12-31

Applicant: Yi-Jen Chiu

Inventor： Yi-Jen Chiu

IPC: G06K9/62 ,  H04N5/00

CPC classification number: H04N5/21 ,  G06T5/002 ,  G06T2207/10016 ,  G06T2207/20012 ,  G06T2207/20182 ,  G06T2207/20192 ,  H04N5/144 ,  H04N19/117 ,  H04N19/86

Abstract: Implementations of a history-based temporal motion noise filtering technique that considers the temporal smooth among multiple pictures as well as the block-based technique to estimate the noise/motion history to better reflect the spatial/temporal smoothness in the local neighborhood are provided. In particular, implementations of the per-pixel blending technique in the block-based noise measurement may be used to better manipulate pixels in both the spatial and temporal domains. A global noise detection technique may be used to estimate the occurrence and/or strength of the noise. A content adaptive spatial filtering content adaptive spatial filter based on a local edge measurement may be used to reduce picture noise as well as preserve edge sharpness. Implementations may be configured for various applications. In particular, programmability options allow users to specify the filter parameters for singularity detection, spatial-only, temporal-only and spatial-temporal filters to achieve user desirable viewing experience.

Abstract translation: 提供了基于历史的时间运动噪声滤波技术的实现，其考虑多个图像之间的时间平滑以及基于块的技术来估计噪声/运动历史以更好地反映局部邻域中的空间/时间平滑度。 特别地，基于块的噪声测量中的每像素混合技术的实现可以用于更好地操纵空间和时域的像素。 可以使用全局噪声检测技术来估计噪声的发生和/或强度。 可以使用基于局部边缘测量的内容自适应空间滤波内容自适应空间滤波器来降低图像噪声以及保持边缘清晰度。 实现可以被配置用于各种应用。 特别地，可编程选项允许用户指定用于奇异性检测的过滤器参数，仅空间，仅时间和空间 - 时间过滤器，以实现用户期望的观看体验。

公开(公告)号：US20120224622A1

公开(公告)日：2012-09-06

申请号：US13466256

申请日：2012-05-08

Applicant: Yi-Jen Chiu ,  Lidong Xu

Inventor： Yi-Jen Chiu ,  Lidong Xu

IPC: H04N7/26

CPC classification number: H04N19/36 ,  H04N19/117 ,  H04N19/30 ,  H04N19/46 ,  H04N19/61 ,  H04N19/80

Abstract: Adaptive filtering may be used to increase the quality of tone mapped, baseline layer encoded information. As a result, scalable video codecs may be implemented with improved picture quality in some embodiments.

Abstract translation: 自适应滤波可用于增加色调映射，基线层编码信息的质量。 结果，在一些实施例中，可升级的视频编解码器可以用改进的图像质量来实现。

公开(公告)号：US08204333B2

公开(公告)日：2012-06-19

申请号：US11974688

申请日：2007-10-15

Applicant: Yi-Jen Chiu

Inventor： Yi-Jen Chiu

IPC: G06K9/40

CPC classification number: H04N5/142 ,  H04N1/64 ,  H04N5/20 ,  H04N7/0135 ,  H04N7/125 ,  H04N19/105 ,  H04N19/14 ,  H04N19/184 ,  H04N19/593 ,  H04N19/85

Abstract: A technique includes converting a first value for a pixel that is associated with a lower bit depth into a second value for the pixel, which is associated with a higher bit depth based at least in part on a neighborhood of the pixel.

Abstract translation: 一种技术包括至少部分地基于像素的邻域将与较低位深度相关联的像素的第一值转换为像素的第二值，该第二值与较高位深度相关联。

公开(公告)号：US08195001B2

公开(公告)日：2012-06-05

申请号：US12082182

申请日：2008-04-09

Applicant: Yi-Jen Chiu ,  Lidong Xu

Inventor： Yi-Jen Chiu ,  Lidong Xu

IPC: G06K9/40

CPC classification number: H04N19/117 ,  H04N19/136 ,  H04N19/157 ,  H04N19/17 ,  H04N19/172 ,  H04N19/176 ,  H04N19/177 ,  H04N19/18 ,  H04N19/182 ,  H04N19/61 ,  H04N19/65 ,  H04N19/82 ,  H04N19/86

Abstract: A video encoder may use an adaptive Wiener filter inside the core video encoding loop to improve coding efficiency. In one embodiment, the Wiener filter may be on the input to a motion estimation unit and, in another embodiment, it may be on the output of a motion compensation unit. The taps for the Wiener filter may be determined based on characteristics of at least a region of pixel intensities within a picture. Thus, the filtering may be adaptive in that it varies based on the type of video being processed.

Abstract translation: 视频编码器可以在核心视频编码环路内使用自适应维纳滤波器来提高编码效率。 在一个实施例中，维纳滤波器可以在运动估计单元的输入上，并且在另一个实施例中，其可以在运动补偿单元的输出上。 用于维纳滤波器的抽头可以基于图像内的像素强度的至少一个区域的特性来确定。 因此，滤波可以是适应性的，因为它根据正在处理的视频的类型而变化。

公开(公告)号：US20110216985A1

公开(公告)日：2011-09-08

申请号：US12718033

申请日：2010-03-05

Applicant: Ya-Ti Peng ,  Yi-Jen Chiu

Inventor： Ya-Ti Peng ,  Yi-Jen Chiu

IPC: G06K9/32 ,  G06K9/40

CPC classification number: G06T3/40

Abstract: System, method, and computer program product to adaptively blend the interpolation results from an 8-tap Lanczos filter and the interpolation results from a bilinear filter, according to the local transitions of the input content. Artifacts may occur, which may be identified as such and corrected. Pixels that represent artifacts in the blended image may be replaced with the pixel for that location taken from the bilinear interpolation.

Abstract translation: 系统，方法和计算机程序产品，根据输入内容的本地转换，自适应地从8抽头Lanczos滤波器和双线性滤波器的插值结果混合插值结果。 可能发生人工错误，可能会被识别和纠正。 在混合图像中表示伪像的像素可以被从双线性插值中取出的该位置的像素代替。

公开(公告)号：US20110176059A1

公开(公告)日：2011-07-21

申请号：US13074800

申请日：2011-03-29

Applicant: Yi-Jen Chiu

Inventor： Yi-Jen Chiu

IPC: H04N5/21

CPC classification number: H04N5/213 ,  G06T5/002 ,  G06T5/20 ,  G06T7/246 ,  G06T2207/10016 ,  G06T2207/20012 ,  G06T2207/20021 ,  G06T2207/20032 ,  G06T2207/20192 ,  H04N5/144

Abstract: According to one embodiment, a method is disclosed. The method includes performing a local content analysis on video data to classify pixels into singular pixels, motion pixels and static pixels.

Abstract translation: 根据一个实施例，公开了一种方法。 该方法包括对视频数据执行局部内容分析，以将像素分类为奇异像素，运动像素和静态像素。

公开(公告)号：US20110170010A1

公开(公告)日：2011-07-14

申请号：US13071798

申请日：2011-03-25

Applicant: Yi-Jen Chiu

Inventor： Yi-Jen Chiu

IPC: H04N5/21

CPC classification number: G06T5/002 ,  G06T5/50 ,  G06T7/13 ,  G06T2207/10016 ,  G06T2207/20012 ,  G06T2207/20192

Abstract: According to one embodiment, a method is disclosed. The method includes receiving video data performing pre-filtering on the data, performing content analysis is applied to identify an area of the data, applying a two-dimensional (2-D) 2nd gradient operation to extract a high frequency component and normalizing the high frequency component related to high frequency information from a previous picture.

Abstract translation: 根据一个实施例，公开了一种方法。 该方法包括接收对数据执行预滤波的视频数据，执行内容分析以识别数据的区域，应用二维（2-D）第二梯度操作来提取高频分量并使高标准化 与前一图像的高频信息相关的频率分量。