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    POST-PROCESSING FOR DECODER COMPLEXITY SCALABILITY
    1.
    发明申请
    POST-PROCESSING FOR DECODER COMPLEXITY SCALABILITY 有权
    解码器复杂度可扩展性的后处理

    公开(公告)号：US20080063085A1

    公开(公告)日：2008-03-13

    申请号：US11530810

    申请日：2006-09-11

    Applicant: Hsi-Jung WU ,  Ionut HRISTODORESCU ,  Christian L. DUVIVIER ,  James NORMILE ,  Jochen Christian SCHMIDT ,  Chris Yoochang CHUNG

    Inventor： Hsi-Jung WU ,  Ionut HRISTODORESCU ,  Christian L. DUVIVIER ,  James NORMILE ,  Jochen Christian SCHMIDT ,  Chris Yoochang CHUNG

    IPC: H04N11/02 ,  H04N7/12

    CPC classification number: H04N7/26946 ,  H04N19/117 ,  H04N19/156 ,  H04N19/176 ,  H04N19/196 ,  H04N19/423 ,  H04N19/44 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70 ,  H04N19/86

    Abstract: Systems, apparatuses and methods whereby a base coded video signal is provided to a decoder having a set of post-processing stages. The base coded video signal can be decoded to produce a base decoded video signal. Post-processing of the base decoded video signal can be used to produce an enhanced quality video output signal. Application of a post-processing stage can be implemented according to the capabilities of the decoder and/or the instantaneous operating parameters of the decoder and/or characteristics of a display. A control signal, communicated over a dedicated channel separate from the base coded video signal, can be used initiate and/or aid implementation of a post-processing stage. The control signal can also provide information to assist/manage the decoding of the base coded video signal. The use of additional post-processing stages increases the complexity of an overall decoding process while improving the quality of a resulting reproduced video sequence.

    Abstract translation: 将基本编码视频信号提供给具有一组后处理级的解码器的系统，装置和方法。 基编码视频信号可被解码以产生基本解码视频信号。 可以使用基本解码视频信号的后处理来产生增强的质量视频输出信号。 后处理阶段的应用可以根据解码器的能力和/或解码器的瞬时操作参数和/或显示器的特性来实现。 可以使用通过与基本编码视频信号分开的专用信道传送的控制信号来启动和/或辅助后处理阶段的实现。 控制信号还可以提供信息来辅助/管理基本编码视频信号的解码。 使用额外的后处理级增加了整体解码过程的复杂性，同时提高了所得到的再现视频序列的质量。

    ECHO CANCELLATION
    2.
    发明申请
    ECHO CANCELLATION 有权
    ECHO取消

    公开(公告)号：US20070206779A1

    公开(公告)日：2007-09-06

    申请号：US11745568

    申请日：2007-05-08

    Applicant: James Normile ,  Ryan Salsbury

    Inventor： James Normile ,  Ryan Salsbury

    IPC: H04M9/08

    CPC classification number: H04M9/082

    Abstract: A method, apparatus, system, and signal-bearing medium that in an embodiment determine a degree of correlation between a speaker output signal and a microphone input signal and modulate an adaptive gain of an acoustic echo canceller based on the degree of correlation.

    Abstract translation: 一种方法，装置，系统和信号承载介质，其在一个实施例中确定扬声器输出信号和麦克风输入信号之间的相关程度，并且基于相关度调制声学回声消除器的自适应增益。

    Post-processing for decoder complexity scalability
    4.
    发明授权
    Post-processing for decoder complexity scalability 有权
    后处理解码器复杂度可扩展性

    公开(公告)号：US08731064B2

    公开(公告)日：2014-05-20

    申请号：US11530810

    申请日：2006-09-11

    Applicant: Hsi-Jung Wu ,  Ionut Hristodorescu ,  Christian L. Duvivier ,  James Normile ,  Jochen Christian Schmidt ,  Chris Yoochang Chung

    Inventor： Hsi-Jung Wu ,  Ionut Hristodorescu ,  Christian L. Duvivier ,  James Normile ,  Jochen Christian Schmidt ,  Chris Yoochang Chung

    IPC: H04N7/12 ,  H04N7/50 ,  H04N7/26

    CPC classification number: H04N7/26946 ,  H04N19/117 ,  H04N19/156 ,  H04N19/176 ,  H04N19/196 ,  H04N19/423 ,  H04N19/44 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70 ,  H04N19/86

    Abstract: Systems, apparatuses and methods whereby a base coded video signal is provided to a decoder having a set of post-processing stages. The base coded video signal can be decoded to produce a base decoded video signal. Post-processing of the base decoded video signal can be used to produce an enhanced quality video output signal. Application of a post-processing stage can be implemented according to the capabilities of the decoder and/or the instantaneous operating parameters of the decoder and/or characteristics of a display. A control signal, communicated over a dedicated channel separate from the base coded video signal, can be used initiate and/or aid implementation of a post-processing stage. The control signal can also provide information to assist/manage the decoding of the base coded video signal. The use of additional post-processing stages increases the complexity of an overall decoding process while improving the quality of a resulting reproduced video sequence.

    Abstract translation: 将基本编码视频信号提供给具有一组后处理级的解码器的系统，装置和方法。 基编码视频信号可被解码以产生基本解码视频信号。 可以使用基本解码视频信号的后处理来产生增强的质量视频输出信号。 后处理阶段的应用可以根据解码器的能力和/或解码器的瞬时操作参数和/或显示器的特性来实现。 可以使用通过与基本编码视频信号分开的专用信道传送的控制信号来启动和/或辅助后处理阶段的实现。 控制信号还可以提供信息来辅助/管理基本编码视频信号的解码。 使用额外的后处理级增加了整体解码过程的复杂性，同时提高了所得到的再现视频序列的质量。

    Pre-processing method and system for data reduction of video sequences and bit rate reduction of compressed video sequences using temporal filtering
    7.
    发明申请
    Pre-processing method and system for data reduction of video sequences and bit rate reduction of compressed video sequences using temporal filtering 失效
    使用时间滤波的视频序列数据缩减和压缩视频序列比特率降低的预处理方法和系统

    公开(公告)号：US20050036558A1

    公开(公告)日：2005-02-17

    申请号：US10640734

    申请日：2003-08-13

    Applicant: Adriana Dumitras ,  James Normile ,  Ryan Salsbury

    Inventor： Adriana Dumitras ,  James Normile ,  Ryan Salsbury

    IPC: H04N5/21 ,  H04N7/26 ,  H04N9/804 ,  H04N7/12

    CPC classification number: H04N19/117 ,  H04N5/21 ,  H04N9/8042 ,  H04N19/136 ,  H04N19/17 ,  H04N19/80

    Abstract: Methods for pre-processing video sequences prior to compression to provide data reduction of the video sequence. In addition, after compression of the pre-processed video sequence, the bit rate of the pre-processed and compressed video sequence will be lower than the bit rate of the video sequence after compression but without pre-processing. A temporal filtering method is provided for pre-processing of video frames of a video sequence. In the method, pixel values of successive frames are filtered when the difference in the pixel values between the successive frames are within high and low threshold values. The high and low threshold values are determined adaptively depending on the illumination level of a video frame to provide variability of filtering strength depending on the illumination levels of a video frame.

    Abstract translation: 用于在压缩之前预处理视频序列以提供视频序列的数据缩减的方法。 此外，在压缩预处理的视频序列之后，预处理和压缩的视频序列的比特率将低于压缩后的视频序列的比特率，但是没有预处理。 提供了用于对视频序列的视频帧进行预处理的时间滤波方法。 在该方法中，当连续帧之间的像素值的差在高和低阈值之间时，连续帧的像素值被滤波。 根据视频帧的照明级别自适应地确定高和低阈值，以根据视频帧的照明级别提供滤波强度的变化性。

    H.264/AVC coder incorporating rate and quality controller
    8.
    发明授权
    H.264/AVC coder incorporating rate and quality controller 有权
    H.264 / AVC编码器并入速率和质量控制器

    公开(公告)号：US07986731B2

    公开(公告)日：2011-07-26

    申请号：US10811983

    申请日：2004-03-30

    Applicant: Barin Haskell ,  Adriana Dumitras ,  James Normile ,  Hsi-Jung Wu ,  Xiaochun Nie ,  Atul Puri

    Inventor： Barin Haskell ,  Adriana Dumitras ,  James Normile ,  Hsi-Jung Wu ,  Xiaochun Nie ,  Atul Puri

    IPC: H04N7/12

    CPC classification number: H04N19/198 ,  H04N19/115 ,  H04N19/124 ,  H04N19/132 ,  H04N19/14 ,  H04N19/142 ,  H04N19/149 ,  H04N19/152 ,  H04N19/172 ,  H04N19/196 ,  H04N19/61 ,  H04N19/82

    Abstract: A rate control system is disclosed for video coding applications. The rate controller assigns a quantization parameter for video data in a picture in response to complexity indicators indicative of spatial complexity, motion complexity and/or bits per pel of the picture. A virtual buffer based quantizer parameter is proposed based on a virtual buffer fullness analysis and a target rate estimate, which is derived from the complexity indicators. A second quantizer parameter is proposed from a linear regression analysis of quantizer parameters used to code previously coded pictures of similar type (e.g., I pictures, P pictures or B pictures). A coding policy decision unit defines a final quantizer parameter from a comparison of the two proposed quantizer parameters.

    Abstract translation: 公开了一种用于视频编码应用的速率控制系统。 速率控制器响应于表示图像的空间复杂度，运动复杂度和/或每像素的复杂度指示符，为图像中的视频数据分配量化参数。 基于虚拟缓冲区丰满度分析和目标速率估计提出了一种基于虚拟缓冲器的量化器参数，该参数是从复杂性指标中得出的。 从用于对先前编码的类似类型的图像（例如，I图像，P图像或B图像）进行编码的量化器参数的线性回归分析提出了第二量化参数。 编码策略决定单元根据两个提出的量化器参数的比较来定义最终的量化器参数。

    Facial Pose Improvement with Perspective Distortion Correction
    9.
    发明申请
    Facial Pose Improvement with Perspective Distortion Correction 有权
    透视畸变修正的面部姿态改善

    公开(公告)号：US20110090303A1

    公开(公告)日：2011-04-21

    申请号：US12581043

    申请日：2009-10-16

    Applicant: Hsi-Jung Wu ,  Chris Yoochang Chung ,  Xiaojin Shi ,  James Normile

    Inventor： Hsi-Jung Wu ,  Chris Yoochang Chung ,  Xiaojin Shi ,  James Normile

    IPC: H04N7/15 ,  H04N5/217

    CPC classification number: G06K9/00228 ,  G06T3/00 ,  G06T5/006 ,  G06T2207/20104 ,  G06T2207/30201 ,  H04N5/217 ,  H04N5/23219 ,  H04N5/23258 ,  H04N5/23267

    Abstract: Methods, systems, and apparatus are presented for reducing distortion in an image, such as a video image. A video image can be captured by an image capture device, e.g. during a video conferencing session. Distortion correction processing, such as the application of one or more warping techniques, can be applied to the captured image to produce a distortion corrected image, which can be transmitted to one or more participants. The warping techniques can be performed in accordance with one or more warp parameters specifying a transformation of the captured image. Further, the warp parameters can be generated in accordance with an orientation of the image capture device, which can be determined based on sensor data or can be a fixed value. Additionally or alternatively, the warp parameters can be determined in accordance with a reference image or model to which the captured image should be warped.

    Abstract translation: 呈现了用于减少诸如视频图像的图像中的失真的方法，系统和装置。 视频图像可以由图像捕获设备捕获，例如， 在视频会议期间。 畸变校正处理，例如应用一个或多个翘曲技术，可以应用于所捕获的图像，以产生可以发送到一个或多个参与者的失真校正图像。 翘曲技术可以根据指定捕获图像的变换的一个或多个翘曲参数来执行。 此外，可以根据可以基于传感器数据确定的图像捕获装置的取向来生成翘曲参数，或者可以是固定值。 附加地或替代地，可以根据捕获的图像应该翘曲的参考图像或模型来确定翘曲参数。

    Codebook-based lossy data compression encoding system
    10.
    发明授权
    Codebook-based lossy data compression encoding system 失效
    基于码本的有损数据压缩编码系统

    公开(公告)号：US5838691A

    公开(公告)日：1998-11-17

    申请号：US723695

    申请日：1996-09-30

    Applicant: Ke-Chiang Chu ,  Dulce Ponceleon ,  James Normile

    Inventor： Ke-Chiang Chu ,  Dulce Ponceleon ,  James Normile

    IPC: G06T9/00 ,  H03M7/30 ,  H03M7/42 ,  G06F11/00

    CPC classification number: G06T9/008 ,  H03M7/3082 ,  H03M7/42

    Abstract: A communication system encodes input data by comparing the data to records in a lossy codebook to determine the closest match. An index corresponding to the record that most closely matches the input data is retrieved from the codebook and transmitted to a receiver. For a predetermined sampling interval, the communication system collects statistics of the frequency of occurrence of each record matching the input data. The records are sorted in descending order by the frequency of occurrence. Using either a predetermined error rate or a predetermined subtable size, the communication system creates a subtable of the records having the greatest frequency of occurrence. To reduce the search time of finding a record matching the input data, the communication system searches only the subtable for records until the error of the match in the subtable exceeds a preselected threshold or until a preselected period of time has elapsed. The communication system again collects statistics of the frequency of occurrence.

    Abstract translation: 通信系统通过将数据与有损码本中的记录进行比较来确定最接近的匹配来对输入数据进行编码。 对应于与输入数据最匹配的记录的索引从码本中检索并发送到接收器。 对于预定的采样间隔，通信系统收集与输入数据匹配的每个记录的出现频率的统计。 记录按发生频率按降序排列。 使用预定错误率或预定的子尺寸，通信系统创建具有最大发生频率的记录的子表。 为了减少找到与输入数据匹配的记录的搜索时间，通信系统仅搜索子表中的记录，直到子表中的匹配错误超过预选阈值或直到预选的时间段过去。 通信系统再次收集发生频率的统计。

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