公开(公告)号：US08457197B2

公开(公告)日：2013-06-04

申请号：US13466256

申请日：2012-05-08

Applicant: Yi-Jen Chiu ,  Lidong Xu

Inventor： Yi-Jen Chiu ,  Lidong Xu

IPC: H04N7/12

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.

公开(公告)号：US08379723B2

公开(公告)日：2013-02-19

申请号：US11475413

申请日：2006-06-27

Applicant: Yi-Jen Chiu ,  Mei-Chen Yeh ,  Prasenjit Biswas ,  Louis Lippincott

Inventor： Yi-Jen Chiu ,  Mei-Chen Yeh ,  Prasenjit Biswas ,  Louis Lippincott

IPC: H04N7/12

CPC classification number: H04N19/51 ,  H04N19/112 ,  H04N19/186 ,  H04N19/513 ,  H04N19/573

Abstract: A system, apparatus, method, and article to process a chroma motion vector are described. The apparatus may include a video decoder. The video decoder includes a processor to receive a compressed video bitstream. The compressed video bitstream includes a stream of pictures. The stream of pictures includes a current slice and a current block within the slice. The processor pre-computes a chroma motion vector adjustment parameter for the current slice and determines a motion vector component for the current block within the current slice using the pre-computed chroma motion vector adjustment parameter.

Abstract translation: 描述了用于处理色度运动矢量的系统，装置，方法和物品。 该装置可以包括视频解码器。 视频解码器包括用于接收压缩视频比特流的处理器。 压缩视频比特流包括图像流。 图像流包括切片内的当前切片和当前块。 处理器预先计算当前切片的色度运动矢量调整参数，并使用预先计算的色度运动矢量调整参数确定当前切片内当前块的运动矢量分量。

公开(公告)号：US20130022126A1

公开(公告)日：2013-01-24

申请号：US13638628

申请日：2010-03-31

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

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

IPC: H04N7/28 ,  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：US20120294370A1

公开(公告)日：2012-11-22

申请号：US13575233

申请日：2011-04-01

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

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

IPC: H04N7/32

CPC classification number: H04N19/44 ,  H04N19/513 ,  H04N19/533 ,  H04N19/56

Abstract: A system and method for performing candidate-based decoder-side motion vector determination (DMVD). Candidate motion vectors (MVs) may be rounded to the nearest whole or integer pixel. The rounded candidate MV having the best sum of absolute differences (SAD) may be identified. This may be used as the final MV. Alternatively, the un-rounded MV corresponding to this rounded candidate MV may be used as the final MV. Alternatively, a small range integer search may be performed around the chosen rounded candidate MV, and the best integer pixel in the search area may be identified and used to define the final MV. Alternatively, an intermediate MV may be chosen, where this MV is intermediate between the chosen rounded candidate MV and the MV corresponding to the best integer pixel in the search area.

Abstract translation: 一种用于执行基于候选的解码器侧运动矢量确定（DMVD）的系统和方法。 候选运动矢量（MV）可以舍入到最接近的整数或整数像素。 可以识别具有最佳绝对差（SAD）之和的舍入候选MV。 这可以用作最终的MV。 或者，可以将与该舍入候选MV相对应的未舍入的MV用作最终MV。 或者，可以围绕所选择的舍入候选MV执行小范围整数搜索，并且可以识别搜索区域中的最佳整数像素并用于定义最终MV。 或者，可以选择中间MV，其中该MV在所选择的舍入候选MV和对应于搜索区域中的最佳整数像素的MV之间。

公开(公告)号：US08295357B2

公开(公告)日：2012-10-23

申请号：US11646763

申请日：2006-12-27

Applicant: Yi-Jen Chiu ,  Sang-hee Lee ,  Hong Jiang

Inventor： Yi-Jen Chiu ,  Sang-hee Lee ,  Hong Jiang

IPC: H04N7/46

CPC classification number: H04N7/012 ,  H04N7/0142

Abstract: In one embodiment, an apparatus and method for an angular-directed spatial deinterlacer are disclosed. In one embodiment, the method comprises calculating a cost measure for each of multiple angle candidates for a target pixel block to be deinterlaced in a spatial-only domain, determining a horizontal angle measure for the target pixel block, establishing a global minimum angle from the multiple angle candidates by determining the lowest cost measure from the multiple angle candidates, establishing a local minimum angle from the multiple angle candidates by sifting through the angle candidates in a hierarchical manner, and filtering the global minimum angle and the local minimum angle to create a value for interpolating the target pixel block for deinterlacing. Other embodiments are also described.

Abstract translation: 在一个实施例中，公开了一种用于角定向空间解交错器的装置和方法。 在一个实施例中，该方法包括计算针对要在空间域中去隔行扫描的目标像素块的多个角度候选中的每一个的成本测量，确定目标像素块的水平角度度量，从 通过从多个角度候选确定最低成本度量来确定多个角度候选，通过以分级方式筛选角度候选来从多个角度候选建立局部最小角度，以及过滤全局最小角度和局部最小角度以创建 内插用于去隔行扫描的目标像素块的值。 还描述了其它实施例。

公开(公告)号：US20120219059A1

公开(公告)日：2012-08-30

申请号：US13466243

申请日：2012-05-08

Applicant: Yi-Jen Chiu ,  Lidong Xu

Inventor： Yi-Jen Chiu ,  Lidong Xu

IPC: H04N7/26 ,  H04N7/32

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：US08249395B2

公开(公告)日：2012-08-21

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

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：US08243200B2

公开(公告)日：2012-08-14

申请号：US13071798

申请日：2011-03-25

Applicant: Yi-Jen Chiu

Inventor： Yi-Jen Chiu

IPC: H04N5/21 ,  H04N5/208

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。

公开(公告)号：US08208560B2

公开(公告)日：2012-06-26

申请号：US11974686

申请日：2007-10-15

Applicant: Yi-Jen Chiu ,  Hong Jiang ,  Yingta Yeh

Inventor： Yi-Jen Chiu ,  Hong Jiang ,  Yingta Yeh

IPC: H04N7/12

CPC classification number: H04N19/34 ,  H04N19/30 ,  H04N19/80

Abstract: A video system includes an analyzer and a bit depth predictor. The analyzer receives a first coded video signal, which is indicative of first values for pixels. The first values are associated with a first bit depth. The analyzer, for each pixel, analyzes the first values for the pixels located in a neighborhood that contains said each pixel. The bit depth predictor, based at least in part on the analysis, generates a second coded video signal that is indicative of second values for the pixels. The second values are associated with a second bit depth that is different than the first bit depth.

Abstract translation: 视频系统包括分析器和位深度预测器。 分析仪接收第一编码视频信号，其表示像素的第一值。 第一个值与第一个位深度相关联。 对于每个像素，分析器分析位于包含所述每个像素的邻域中的像素的第一值。 位深度预测器至少部分地基于分析产生指示像素的第二值的第二编码视频信号。 第二个值与不同于第一位深度的第二位深度相关联。

公开(公告)号：US07952646B2

公开(公告)日：2011-05-31

申请号：US11647019

申请日：2006-12-27

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 receiving video data, measuring a temporal feature of motion movement of the data, measuring per-pixel spatial content features of the data, performing a local content analysis to classify pixels; and performing noise reduction filtering on the pixels.

Abstract translation: 根据一个实施例，公开了一种方法。 该方法包括接收视频数据，测量数据的运动移动的时间特征，测量数据的每像素空间内容特征，执行局部内容分析以对像素进行分类; 并对像素执行降噪滤波。