公开(公告)号：US20140086304A1

公开(公告)日：2014-03-27

申请号：US13991592

申请日：2012-09-24

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

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

IPC: H04N7/26

CPC classification number: H04N19/117 ,  H04N19/136 ,  H04N19/147 ,  H04N19/186 ,  H04N19/46 ,  H04N19/61 ,  H04N19/82

Abstract: Reconstructed picture quality for a video codec system may be improved by categorizing reconstructed pixels into different histogram bins with histogram segmentation and then applying different filters on different bins. Histogram segmentation may be performed by averagely dividing the histogram into M bins or adaptively dividing the histogram into N bins based on the histogram characteristics. Here M and N may be a predefined, fixed, non-negative integer value or an adaptively generated value at encoder side and may be sent to decoder through the coded bitstream.

Abstract translation: 通过将重建的像素分类为具有直方图分割的不同的直方图箱，然后在不同的箱上应用不同的过滤器，可以改进用于视频编解码器系统的重构图像质量。 直方图分割可以通过将直方图平均地划分成M个箱或者基于直方图特征将直方图自适应地划分成N个箱来执行。 这里M和N可以是编码器侧的预定义的，固定的，非负整数值或自适应产生的值，并且可以通过编码比特流发送到解码器。

公开(公告)号：US20120250988A1

公开(公告)日：2012-10-04

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

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：US08126046B2

公开(公告)日：2012-02-28

申请号：US11479324

申请日：2006-06-30

Applicant: Yi-Jen Chiu ,  Prasenjit Biswas

Inventor： Yi-Jen Chiu ,  Prasenjit Biswas

IPC: H04N7/12 ,  H04B1/66

CPC classification number: H04N19/44 ,  H04N19/112 ,  H04N19/129 ,  H04N19/174 ,  H04N19/176 ,  H04N19/196 ,  H04N19/197 ,  H04N19/61 ,  H04N19/70

Abstract: A system, apparatus, method, and article to process a flexible macroblock ordering and arbitrary slice ordering are described. The apparatus may include a video decoder. The video decoder includes a processor to store coding parameters of one or more neighboring macroblocks in a data buffer. The neighboring macroblocks are previously decoded macroblocks and are adjacent to a current macroblock. The processor is to store control parameters for each of the one or more neighboring macroblocks in the data buffer. The processor is to reconstruct coding parameters for the current macroblock using availability information associated with the neighboring macroblocks.

Abstract translation: 描述了处理柔性宏块排序和任意片排序的系统，装置，方法和制品。 该装置可以包括视频解码器。 视频解码器包括处理器，用于存储数据缓冲器中的一个或多个相邻宏块的编码参数。 相邻宏块是先前解码的宏块，并且与当前宏块相邻。 处理器用于存储数据缓冲器中的一个或多个相邻宏块中的每一个的控制参数。 处理器使用与相邻宏块相关联的可用性信息来重构当前宏块的编码参数。

公开(公告)号：US07952647B2

公开(公告)日：2011-05-31

申请号：US11647023

申请日：2006-12-27

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：US20110002389A1

公开(公告)日：2011-01-06

申请号：US12566823

申请日：2009-09-25

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

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

IPC: H04N7/26

CPC classification number: H04N19/577 ,  H04N19/103 ,  H04N19/137 ,  H04N19/139 ,  H04N19/172 ,  H04N19/44 ,  H04N19/513 ,  H04N19/52 ,  H04N19/57 ,  H04N19/573 ,  H04N19/61

Abstract: Methods and systems to apply motion estimation (ME) based on reconstructed reference pictures in a B frame or in a P frame at a video decoder. For a P frame, projective ME may be performed to obtain a motion vector (MV) for a current input block. In a B frame, both projective ME and mirror ME may be performed to obtain an MV for the current input block. The ME process can be performed on sub-partitions of the input block, which may reduce the prediction error without increasing the amount of MV information in the bitstream. Decoder-side ME can be applied for the prediction of existing inter frame coding modes, and traditional ME or the decoder-side ME can be adaptively selected to predict a coding mode based on a rate distribution optimization (RDO) criterion.

Abstract translation: 基于在B帧或视频解码器的P帧中的重建参考图像应用运动估计（ME）的方法和系统。 对于P帧，可以执行投影ME以获得当前输入块的运动矢量（MV）。 在B帧中，可以执行投射ME和镜ME两者以获得当前输入块的MV。 可以在输入块的子分区上执行ME处理，这可以在不增加比特流中的MV信息的量的情况下减少预测误差。 解码器端ME可以应用于现有的帧间编码模式的预测，并且传统的ME或解码器侧的ME可以被自适应地选择以基于速率分布优化（RDO）准则来预测编码模式。

公开(公告)号：US20110002387A1

公开(公告)日：2011-01-06

申请号：US12657168

申请日：2010-01-14

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

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

IPC: H04N7/26

CPC classification number: H04N19/57 ,  H04N19/44 ,  H04N19/61

Abstract: Techniques are described that can be used to apply motion estimation (ME) based on reconstructed reference pictures in a B frame or in a P frame at a video decoder. For a P frame, projective ME may be performed to obtain a motion vector (MV) for a current input block. In a B frame, both projective ME and mirror ME may be performed to obtain an MV for the current input block. A metric an be used determining a metric for each pair of MV0 and MV1 that is found in the search path, where the metric is based on a combination of a first, second, and third metrics. The first metric is based on temporal frame correlation, a second metric is based on spatial neighbors of the reference blocks, and a third metric is based on the spatial neighbors of the current block.

Abstract translation: 描述了可以用于基于B帧中的重建参考图像或视频解码器的P帧中的运动估计（ME）来应用的技术。 对于P帧，可以执行投影ME以获得当前输入块的运动矢量（MV）。 在B帧中，可以执行投射ME和镜ME两者以获得当前输入块的MV。 用于确定在搜索路径中找到的每对MV0和MV1的度量的度量，其中度量基于第一，第二和第三度量的组合。 第一度量基于时间帧相关，第二度量基于参考块的空间邻居，并且第三度量基于当前块的空间邻居。

公开(公告)号：US20100008417A1

公开(公告)日：2010-01-14

申请号：US12217805

申请日：2008-07-09

Applicant: Lidong Xu ,  Yi-Jen Chiu

Inventor： Lidong Xu ,  Yi-Jen Chiu

IPC: H04B1/66

CPC classification number: H04N19/82 ,  H04N19/117 ,  H04N19/147 ,  H04N19/17 ,  H04N19/46 ,  H04N19/61

Abstract: Techniques are described that can be used to determine parameters of an adaptive Wiener filter to apply to a video region. The following parameters of the Wiener filter may be adjusted: coefficients, coefficient quantization, filter type, filter size, prediction mode, entropy encoding, and number of filter tables. The parameters associated with the lowest rate distortion cost of the encoder are selected for transmission with the encoded video. If not using adaptive Wiener filtering results in a lowest rate distortion cost, then adaptive Wiener filtering is not used for the video region. If using adaptive Wiener filtering results in a lowest rate distortion cost, then the parameters applied by the adaptive Wiener filtering that result in the lowest rate distortion cost are communicated with the filtered video region.

Abstract translation: 描述了可以用于确定适用于视频区域的自适应维纳滤波器的参数的技术。 可以调整维纳滤波器的以下参数：系数，系数量化，滤波器类型，滤波器大小，预测模式，熵编码和滤波器表数。 选择与编码器的最低速率失真成本相关联的参数以便与编码视频一起传输。 如果不使用自适应维纳滤波导致最低速率失真成本，则视频区域不使用自适应维纳滤波。 如果使用自适应维纳滤波导致最低速率失真成本，则导致最低速率失真成本的自适应维纳滤波所应用的参数与滤波视频区域通信。

公开(公告)号：US20080158426A1

公开(公告)日：2008-07-03

申请号：US11647019

申请日：2006-12-27

Applicant: Yi-Jen Chiu

Inventor： Yi-Jen Chiu

IPC: H04N5/213

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。

公开(公告)号：US20080056347A1

公开(公告)日：2008-03-06

申请号：US11479324

申请日：2006-06-30

Applicant: Yi-Jen Chiu ,  Prasenjit Biswas

Inventor： Yi-Jen Chiu ,  Prasenjit Biswas

IPC: H04B1/66

CPC classification number: H04N19/44 ,  H04N19/112 ,  H04N19/129 ,  H04N19/174 ,  H04N19/176 ,  H04N19/196 ,  H04N19/197 ,  H04N19/61 ,  H04N19/70

Abstract: A system, apparatus, method, and article to process a flexible macroblock ordering and arbitrary slice ordering are described. The apparatus may include a video decoder. The video decoder includes a processor to store coding parameters of one or more neighboring macroblocks in a data buffer. The neighboring macroblocks are previously decoded macroblocks and are adjacent to a current macroblock. The processor is to store control parameters for each of the one or more neighboring macroblocks in the data buffer. The processor is to reconstruct coding parameters for the current macroblock using availability information associated with the neighboring macroblocks.

Abstract translation: 描述了处理柔性宏块排序和任意片排序的系统，装置，方法和制品。 该装置可以包括视频解码器。 视频解码器包括处理器，用于存储数据缓冲器中的一个或多个相邻宏块的编码参数。 相邻宏块是先前解码的宏块，并且与当前宏块相邻。 处理器用于存储数据缓冲器中的一个或多个相邻宏块中的每一个的控制参数。 处理器使用与相邻宏块相关联的可用性信息来重构当前宏块的编码参数。

公开(公告)号：US20070297511A1

公开(公告)日：2007-12-27

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: H04N11/02 ,  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. Other embodiments are described and claimed.

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。 描述和要求保护其他实施例。