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    History-based spatio-temporal noise reduction
    61.
    发明授权
    History-based spatio-temporal noise reduction 有权
    基于历史的时空噪声降低

    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。

    In-loop adaptive wiener filter for video coding and decoding
    64.
    发明授权
    In-loop adaptive wiener filter for video coding and decoding 有权
    用于视频编码和解码的环路自适应维纳滤波器

    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。

    SYSTEM, METHOD, AND COMPUTER PROGRAM PRODUCT FOR PICTURE RESIZING
    65.
    发明申请
    SYSTEM, METHOD, AND COMPUTER PROGRAM PRODUCT FOR PICTURE RESIZING 有权
    系统，方法和计算机程序产品图像化

    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。

    METHOD AND APPARATUS OF CONTENT ADAPTIVE DETAILING FILTERING FOR DIGITAL PICTURES
    67.
    发明申请
    METHOD AND APPARATUS OF CONTENT ADAPTIVE DETAILING FILTERING FOR DIGITAL PICTURES 有权
    用于数字图像的内容自适应滤波的方法和装置

    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。

    METHODS AND APPARATUS FOR COMPLETION OF VIDEO STABILIZATION
    68.
    发明申请
    METHODS AND APPARATUS FOR COMPLETION OF VIDEO STABILIZATION 审中-公开
    完成视频稳定的方法和装置

    公开(公告)号：US20110150093A1

    公开(公告)日：2011-06-23

    申请号：US12644825

    申请日：2009-12-22

    Applicant: Stephen Mangiat ,  Yi-Jen Chiu

    Inventor： Stephen Mangiat ,  Yi-Jen Chiu

    IPC: H04N11/02

    CPC classification number: H04N5/23248 ,  G06T5/003 ,  G06T2207/10016 ,  G06T2207/20021 ,  H04N5/145 ,  H04N5/23264

    Abstract: Systems and methods for video completion. A set of global motion parameters may be determined for a current frame that is to be stabilized. Motion vectors for edge blocks of the current frame may then be calculated. For a prospective new block beyond the current frame, candidate blocks may be generated using a global motion vector and the calculated motion vectors. From the candidate blocks, a candidate block may be selected to be the new block, wherein the selected candidate block may be located at least partially within the outer boundary of the eventual stabilized version of the current frame.

    Abstract translation: 视频完成的系统和方法。 可以为要稳定的当前帧确定一组全局运动参数。 然后可以计算当前帧的边缘块的运动矢量。 对于超出当前帧的预期新块，可以使用全局运动矢量和所计算的运动矢量来生成候选块。 从候选块中，候选块可以被选择为新的块，其中所选择的候选块可以至少部分地位于当前帧的最终稳定版本的外边界内。

    In-loop adaptive wiener filter for video coding and decoding
    70.
    发明申请
    In-loop adaptive wiener filter for video coding and decoding 有权
    用于视频编码和解码的环路自适应维纳滤波器

    公开(公告)号：US20090257670A1

    公开(公告)日：2009-10-15

    申请号：US12082182

    申请日：2008-04-09

    Applicant: Yi-Jen Chiu ,  Lidong Xu

    Inventor： Yi-Jen Chiu ,  Lidong Xu

    IPC: H04N7/24

    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。

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