公开(公告)号：US20140050266A1

公开(公告)日：2014-02-20

申请号：US13605387

申请日：2012-09-06

Applicant: Wenhao Zhang ,  Yi-Jen Chiu ,  Pieter Kapsenberg ,  Lidong Xu ,  Yu Han ,  Zhipin Apple Deng ,  Xiaoxia Cai

Inventor： Wenhao Zhang ,  Yi-Jen Chiu ,  Pieter Kapsenberg ,  Lidong Xu ,  Yu Han ,  Zhipin Apple Deng ,  Xiaoxia Cai

IPC: H04N7/26 ,  H04N7/50

CPC classification number: H04N19/60 ,  H04N19/122 ,  H04N19/91 ,  H04N19/96

Abstract: Systems, apparatus, articles, and methods are described including operations for size based transform unit context derivation.

Abstract translation: 描述了系统，装置，物品和方法，包括基于大小的变换单元上下文导出的操作。

公开(公告)号：US08639031B2

公开(公告)日：2014-01-28

申请号：US13074257

申请日：2011-03-29

Applicant: Ya-Ti Peng ,  Yi-Jen Chiu

Inventor： Ya-Ti Peng ,  Yi-Jen Chiu

IPC: G06K9/00 ,  G06K9/40

CPC classification number: G06T5/40 ,  G06K9/38 ,  G06T2207/10016 ,  G06T2207/10024

Abstract: Techniques are disclosed involving contrast adjustment for images. For example, an input image is classified based on its pixel value characteristics, as expressed in an input brightness histogram. From such a classification, a target histogram distribution for a corresponding output image (i.e., a contrast-adjusted transformation of the input image) may be specified. With the target histogram of the output image specified, a transformation function may be derived that maps input image values to output image values. Moreover, transitions of such transformation functions may be smoothed. Such smoothing may provide advantages, such as a reduction in flickering associated with video data.

Abstract translation: 公开了涉及图像的对比度调整的技术。 例如，输入图像根据输入亮度直方图所表示的像素值特性进行分类。 根据这样的分类，可以规定对应的输出图像的目标直方图分布（即输入图像的对比度调整变换）。 利用指定的输出图像的目标直方图，可以导出将输入图像值映射到输出图像值的变换函数。 此外，这种变换函数的转换可以被平滑化。 这种平滑可以提供诸如减少与视频数据相关联的闪烁的优点。

公开(公告)号：US20130287111A1

公开(公告)日：2013-10-31

申请号：US13976778

申请日：2011-06-29

Applicant: Lidong Xu ,  Yi-Jen Chiu ,  Wenhao Zhang

Inventor： Lidong Xu ,  Yi-Jen Chiu ,  Wenhao Zhang

IPC: H04N7/36

CPC classification number: H04N19/513 ,  H04N19/44 ,  H04N19/57

Abstract: Systems, devices and methods for performing low memory access candidate-based decoder-side motion vector determination (DMVD) are described. The number of candidate motion vectors (MVs) searched may be confined by limiting the range of pixels associated with candidate MVs to a pre-defined window. Reference windows may then be loaded into memory only once for both DMVD and motion compensation (MC) processing. Reference window size may be adapted to different PU sizes. Further, various schemes are described for determining reference window positions.

Abstract translation: 描述用于执行低存储器访问候选的解码器侧运动矢量确定（DMVD）的系统，设备和方法。 搜索的候选运动矢量（MV）的数量可以通过将与候选MV相关联的像素的范围限制为预定窗口来限制。 然后，对于DMVD和运动补偿（MC）处理，参考窗口可以仅被加载到存储器中一次。 参考窗口尺寸可以适应不同的PU尺寸。 此外，描述了用于确定参考窗口位置的各种方案。

公开(公告)号：US20130188692A1

公开(公告)日：2013-07-25

申请号：US13709780

申请日：2012-12-10

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

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

IPC: H04N7/26

CPC classification number: H04N19/60 ,  H04N19/132 ,  H04N19/154 ,  H04N19/159 ,  H04N19/176 ,  H04N19/48

Abstract: Video compression encoding includes intra and inter prediction to reduce spatial and temporal redundancies in video. Prediction results or residuals represent differences between original video pixel values and predicted pixel values. The prediction residuals may be transformed into coefficients, referred to as transform coefficients, in the frequency domain. The transform coefficients may be quantized and entropy encoded. The transform coefficients can be sub-sampled prior to quantization to reduce their number. For example, sub-sampling may reduce more high frequency components than low frequency components represented in the transform coefficients. Therefore, sub-sampling reduces the number of transform coefficients that need to be quantized, reduces quantization complexity, and correspondingly increases throughput in the encoding.

Abstract translation: 视频压缩编码包括帧内和帧间预测，以减少视频中的空间和时间冗余。 预测结果或残差表示原始视频像素值与预测像素值之间的差异。 预测残差可以被变换为频域中被称为变换系数的系数。 可以对变换系数进行量化和熵编码。 变换系数可以在量化之前进行子采样以减少它们的数量。 例如，子采样可以减少比变换系数中表示的低频分量更多的高频分量。 因此，子采样减少了需要量化的变换系数的数量，降低了量化复杂度，并且相应地增加了编码中的吞吐量。

公开(公告)号：US20130136174A1

公开(公告)日：2013-05-30

申请号：US13512992

申请日：2011-07-12

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

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

IPC: H04N7/26 ,  H04N7/32

CPC classification number: H04N19/00569 ,  H04N19/105 ,  H04N19/11 ,  H04N19/186 ,  H04N19/61 ,  H04N19/82

Abstract: Systems, devices and methods for performing luma-based chroma ultra prediction are described. Down-sample filters may be applied to luma values of luma pixel positions to generate reconstructed luma values for chroma pixel positions in a prediction unit of an intra frame. The down-sampled reconstructed luma values may then be used to predict chroma values for the chroma pixel positions. In some implementations, a reconstructed luma value of a chroma position may be used to predict that position's chroma value. In other implementations, reconstructed luma values of neighboring chroma pixel positions may be analyzed to adaptively predict a chroma value for a chroma pixel position.

Abstract translation: 描述了用于执行基于亮度的色度帧内预测的系统，设备和方法。 下采样滤波器可以应用于亮度像素位置的亮度值，以生成帧内预测单元中的色度像素位置的重建亮度值。 然后可以使用下采样的重构亮度值来预测色度像素位置的色度值。 在一些实现中，可以使用色度位置的重建亮度值来预测该位置的色度值。 在其他实现中，可以分析相邻色度像素位置的重建亮度值以自适应地预测色度像素位置的色度值。

公开(公告)号：US08446961B2

公开(公告)日：2013-05-21

申请号：US12283305

申请日：2008-09-11

Applicant: Yi-Jen Chiu ,  Hong Jiang ,  Lidong Xu ,  Ya-Ti Peng

Inventor： Yi-Jen Chiu ,  Hong Jiang ,  Lidong Xu ,  Ya-Ti Peng

IPC: H04N11/06

CPC classification number: H04N9/64 ,  H04N1/64 ,  H04N19/186 ,  H04N19/30 ,  H04N19/60

Abstract: Techniques are described that can be used to either compress or expand video. Color compression techniques are described that can be used to compress the wide color gamut content into lower color gamut for inclusion in a baseline layer. Color expansion techniques are described that convert lower color gamut data into wider color gamut format for inclusion in an enhancement layer. Both of the baseline video stream and enhancement layer video streams may be transmitted through a channel or stored in a memory device to be viewed later. Accordingly, both baseline and enhancement video layers are available so that either lower or higher quality displays can be used to display video.

Abstract translation: 描述了可用于压缩或扩展视频的技术。 描述了可用于将宽色域内容压缩到较低色域以包含在基线层中的色彩压缩技术。 描述了将较低色域数据转换成更宽的色域格式以包含在增强层中的颜色展开技术。 基线视频流和增强层视频流都可以通过信道发送或存储在存储设备中，以便稍后观看。 因此，基线和增强视频层都可用，以便可以使用较低或较高质量的显示器来显示视频。

公开(公告)号：US08405769B2

公开(公告)日：2013-03-26

申请号：US12644463

申请日：2009-12-22

Applicant: Jong Dae Oh ,  Yi-Jen Chiu

Inventor： Jong Dae Oh ,  Yi-Jen Chiu

IPC: H04N7/01

CPC classification number: H04N7/012

Abstract: Systems and methods for choosing whether to select either a spatial interpolation value or a motion compensation interpolation value for deinterlacing an interlaced frame. A minimal sum of absolute differences (SAD) may be determined for a current pixel. Depending on the magnitude of the minimal SAD relative to two threshold values, different checks may be applied. The outcome of the checks may determine whether the spatial interpolation value or the motion compensation interpolation value may be used in deinterlacing. Generally, the magnitude of the minimal SAD may determine the reliability of the SAD and the consequent trustworthiness of the associated motion vector (MV). Greater reliability of the minimal SAD may suggest that the motion compensation interpolation value may be used for purposes of deinterlacing. Less reliability in the minimal SAD may motivate additional checks to further evaluate whether the motion compensation interpolation value should be used. A less reliable minimal SAD and/or failure of some of the checks may suggest that the motion compensation interpolation value should not be used.

Abstract translation: 用于选择是否选择空间插值或用于去隔行隔行帧的运动补偿内插值的系统和方法。 可以为当前像素确定绝对差的最小和（SAD）。 根据相对于两个阈值的最小SAD的大小，可以应用不同的检查。 检查的结果可以确定空间内插值还是运动补偿内插值可以用于去隔行扫描。 通常，最小SAD的幅度可以确定SAD的可靠性和相关联的运动矢量（MV）的随后的可信度。 最小SAD的更高的可靠性可能表明运动补偿内插值可以用于去隔行扫描。 最小SAD中的较低的可靠性可能会激发额外的检查，以进一步评估是否应使用运动补偿内插值。 不太可靠的最小SAD和/或某些检查失败可能表明不应该使用运动补偿内插值。

公开(公告)号：US20120281759A1

公开(公告)日：2012-11-08

申请号：US13001037

申请日：2010-03-31

Applicant: Lidong Xu ,  Yi-Jen Chiu ,  Hong Jiang

Inventor： Lidong Xu ,  Yi-Jen Chiu ,  Hong Jiang

IPC: H04N7/32

CPC classification number: H04N19/53 ,  H04N19/105 ,  H04N19/109 ,  H04N19/174 ,  H04N19/176 ,  H04N19/187 ,  H04N19/30 ,  H04N19/33 ,  H04N19/37 ,  H04N19/57 ,  H04N19/573 ,  H04N19/61

Abstract: Adaptive control can use hierarchical motion estimation (HME) and/or multiple reference motion estimation (MRME) for the motion estimation of current encoding blocks. Both HME and MRME are allowed in the motion estimation to achieve a high coding gain. Control consists of slice level control and macro-block (MB) level control. A slice is one or more contiguous macroblocks. In slice level control, it is decided to use only one reference frame or use multiple reference frames to coding current slice based on the motion vectors obtained in coarse level motion estimation. In MB level control, it is decided to perform MRME or perform HME for the MB and its subblocks based on the coarse level motion vectors of the MB.

Abstract translation: 自适应控制可以对当前编码块的运动估计使用分层运动估计（HME）和/或多参考运动估计（MRME）。 在运动估计中允许HME和MRME两者实现高编码增益。 控制由片级控制和宏块（MB）级控制组成。 切片是一个或多个连续的宏块。 在片级控制中，决定仅使用一个参考帧或者使用多个参考帧来基于在粗略级运动估计中获得的运动矢量对当前片进行编码。 在MB级别控制中，决定执行MRME或基于MB的粗略级别运动向量对MB及其子块执行HME。

公开(公告)号：US20120176395A1

公开(公告)日：2012-07-12

申请号：US12985461

申请日：2011-01-06

Applicant: Ya-Ti Peng ,  Yi-Jen Chiu

Inventor： Ya-Ti Peng ,  Yi-Jen Chiu

IPC: G09G5/02

CPC classification number: G06T5/008 ,  H04N1/62

Abstract: Methods and systems to manipulate color processing parameters to allow the detection of an arbitrary color of interest. Such reconfigurations may enable general point-of-interest color processing. Color mapping curves may also be configured, to accomplish the tasks of color correction, enhancement, de-saturation, and color compression.

Abstract translation: 用于操纵颜色处理参数以允许检测感兴趣的任意颜色的方法和系统。 这样的重新配置可以实现一般的兴趣点颜色处理。 也可以配置颜色映射曲线，以完成色彩校正，增强，去饱和和色彩压缩的任务。

公开(公告)号：US08218082B2

公开(公告)日：2012-07-10

申请号：US12862175

申请日：2010-08-24

Applicant: Yi-Jen Chiu ,  Louis Lippincott

Inventor： Yi-Jen Chiu ,  Louis Lippincott

IPC: H04N5/21

CPC classification number: G06T5/002 ,  G06T5/20 ,  G06T7/13 ,  G06T2207/10016 ,  G06T2207/20012 ,  G06T2207/20192 ,  H04N19/117 ,  H04N19/14 ,  H04N19/85 ,  H04N19/86

Abstract: A method includes selecting a target pixel and comparing a value of the target pixel with a respective value of each of a plurality of pixels located in an area that includes the target pixel. Further, for each pixel of the plurality of pixels that has a value different by at least a threshold amount from the value of the target pixel, the value of such pixel is replaced by the value of the target pixel. A filter function is applied to a set of pixels which includes the value of the target pixel and current values, after the selective replacement step, of the plurality of pixels.

Abstract translation: 一种方法包括选择目标像素并将目标像素的值与位于包括目标像素的区域中的多个像素中的每一个的相应值进行比较。 此外，对于具有与目标像素的值相差至少阈值的值的多个像素中的每个像素，这样的像素的值被目标像素的值代替。 滤波器函数被应用于包括多个像素的选择性替换步骤之后的目标像素的值和当前值的像素集合。