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1. 发明申请

US20050238103A1 Method and apparatus for performing high quality fast predictive motion search 失效
公开(公告)号：US20050238103A1
公开(公告)日：2005-10-27
申请号：US11168584
申请日：2005-06-28
申请人： Raghavan Subramaniyan , Bhavan Gandhi
发明人： Raghavan Subramaniyan , Bhavan Gandhi
IPC分类号： H04N7/32 , H04B1/66 , H04B5/00 , H04N7/12 , H04N7/26 , H04N7/30
CPC分类号： H04N19/57 , H04N19/52 , H04N19/527 , H04N19/533 , H04N19/56 , H04N19/61
摘要： A method and apparatus for performing a predictive motion search in a video encoder system using motion vectors representing the difference in coordinates of a macroblock of data in a current frame of video data and coordinates of a related macroblock of data in a reference frame of video data. A plurality of motion vector predictors is obtained where the motion vector predictors represent approximations of possible motion vectors for a current macroblock. A search pattern is defined. Each motion vector predictor of the plurality of motion vector predictors is searched around using the search pattern. A final motion vector is then determined.

2. 发明授权

US07463687B2 Method and apparatus for performing high quality fast predictive motion search 失效
标题翻译：用于执行高质量快速预测运动搜索的方法和装置
公开(公告)号：US07463687B2
公开(公告)日：2008-12-09
申请号：US11168584
申请日：2005-06-28
申请人： Raghavan Subramaniyan , Bhavan Gandhi
发明人： Raghavan Subramaniyan , Bhavan Gandhi
IPC分类号： H04B1/66
CPC分类号： H04N19/57 , H04N19/52 , H04N19/527 , H04N19/533 , H04N19/56 , H04N19/61
摘要： A method and apparatus for performing a predictive motion search in a video encoder system using motion vectors representing the difference in coordinates of a macroblock of data in a current frame of video data and coordinates of a related macroblock of data in a reference frame of video data. A plurality of motion vector predictors is obtained where the motion vector predictors represent approximations of possible motion vectors for a current macroblock. A search pattern is defined. Each motion vector predictor of the plurality of motion vector predictors is searched around using the search pattern. A final motion vector is then determined.
摘要翻译：一种用于在视频编码器系统中使用表示视频数据的当前帧中的数据宏块的坐标差的运动矢量和视频数据的参考帧中的相关的数据宏块的坐标来执行预测运动搜索的方法和装置。获得多个运动矢量预测器，其中运动矢量预测器表示当前宏块的可能的运动矢量的近似。定义搜索模式。使用搜索模式搜索多个运动矢量预测器的每个运动矢量预测器。然后确定最终的运动矢量。

3. 发明授权

US06836514B2 Method for the detection and recovery of errors in the frame overhead of digital video decoding systems 有权
标题翻译：用于检测和恢复数字视频解码系统的帧开销中的错误的方法
公开(公告)号：US06836514B2
公开(公告)日：2004-12-28
申请号：US09901809
申请日：2001-07-10
申请人： Bhavan Gandhi , Kevin O'Connell , Faisal Ishtiaq , Raghavan Subramaniyan
发明人： Bhavan Gandhi , Kevin O'Connell , Faisal Ishtiaq , Raghavan Subramaniyan
IPC分类号： H04N718
CPC分类号： H04L1/20
摘要： The disclosed invention is a method to detect candidate errors within the picture start code, picture header, and picture timestamp. Upon detection, these errors may be confirmed and the impacts mitigated. An error within the timestamp bit field is adaptively detected by the use of a threshold comparison, and a mechanism for concealing the timestamp information leaves only a small timestamp anomaly. An error within the picture start code (PSC) is determined by adaptively analyzing the number of bits and the macro-block location of the next slice or GOB. If a PSC is suspected to have been overrun due to an error, this method allows for data beyond the first GOB or slice to be recovered in the frame. Depending on the extent of use of slices and GOBs, the method can recover a majority of the frame that otherwise would have been completely lost. A candidate error within the picture header is evaluated by utilizing the first slice or GOB of the frame and analyzing information from a previous frame to check whether the current frame's header information should be replaced with the previous frame's header information. Replacing the erred frame header can result in a majority of the data within the frame being recovered that would otherwise be discarded if the header was not replaced.
摘要翻译：所公开的发明是检测图像起始码，图像头部和图像时间戳内的候选误差的方法。经检测，可能会确认这些错误，并减轻影响。通过使用阈值比较来自适应地检测时间戳位字段内的错误，并且用于隐藏时间戳信息的机制仅留下小的时间戳异常。通过自适应地分析下一个切片或GOB的位数和宏块位置来确定图像起始码（PSC）内的错误。如果PSC被怀疑由于错误而被超载，则该方法允许超出第一个GOB或切片的数据在帧中被恢复。根据切片和GOB的使用范围，该方法可以恢复否则将完全丢失的大部分帧。通过利用帧的第一片或GOB并分析来自前一帧的信息来评估图片头中的候选错误，以检查当前帧的标题信息是否应该被前一帧的标题信息替换。更换错误的帧头可能会导致正在恢复的帧内的大部分数据，否则如果未更换标题，则将被丢弃。

4. 发明授权

US07023921B2 Method and apparatus for determining block match quality 有权
标题翻译：确定块匹配质量的方法和装置
公开(公告)号：US07023921B2
公开(公告)日：2006-04-04
申请号：US10213652
申请日：2002-08-06
申请人： Raghavan Subramaniyan , Bhavan Gandhi
发明人： Raghavan Subramaniyan , Bhavan Gandhi
IPC分类号： H04N7/12
CPC分类号： H04N19/567 , G06T7/238 , G06T2207/10016 , H04N19/176 , H04N19/51
摘要： A method and apparatus for determining the quality of a block match for a candidate motion vector in a video encoder system using motion vectors representing the difference in coordinates of a macroblock of data in a current frame of video data and coordinates of a related macroblock of data in a reference frame of video data. The method can include defining a search pattern, searching a region based on the search pattern for a candidate motion vector for evaluation, calculating a difference metric, calculating a bias based on the difference between a predictor motion vector and a candidate motion vector, determining a modified difference metric by adding the difference metric to the bias, and defining a final motion vector based on the modified difference metric.
摘要翻译：一种用于使用表示视频数据的当前帧中的数据宏块的坐标差的运动矢量和数据相关宏块的坐标来确定视频编码器系统中的候选运动矢量的块匹配的质量的方法和装置在视频数据的参考帧中。该方法可以包括定义搜索模式，基于用于评估的候选运动矢量的搜索模式搜索区域，计算差值度量，基于预测器运动矢量和候选运动矢量之间的差来计算偏差，确定通过将偏差度量添加到偏差中，并且基于修改的差异度量来定义最终运动矢量来修改差异度量。

5. 发明授权

US06925123B2 Method and apparatus for performing high quality fast predictive motion search 失效
标题翻译：用于执行高质量快速预测运动搜索的方法和装置
公开(公告)号：US06925123B2
公开(公告)日：2005-08-02
申请号：US10212940
申请日：2002-08-06
申请人： Raghavan Subramaniyan , Bhavan Gandhi
发明人： Raghavan Subramaniyan , Bhavan Gandhi
IPC分类号： H04N7/32 , H04B1/66 , H04B5/00 , H04N7/12 , H04N7/26 , H04N7/30
CPC分类号： H04N19/57 , H04N19/52 , H04N19/527 , H04N19/533 , H04N19/56 , H04N19/61
摘要： A method and apparatus for performing a predictive motion search in a video encoder system using motion vectors representing the difference in coordinates of a macroblock of data in a current frame of video data and coordinates of a related macroblock of data in a reference frame of video data. A plurality of motion vector predictors is obtained where the motion vector predictors represent approximations of possible motion vectors for a current macroblock. A search pattern is defined. Each motion vector predictor of the plurality of motion vector predictors is searched around using the search pattern. A final motion vector is then determined.
摘要翻译：一种用于在视频编码器系统中使用表示视频数据的当前帧中的数据宏块的坐标差的运动矢量和视频数据的参考帧中的相关的数据宏块的坐标来执行预测运动搜索的方法和装置。获得多个运动矢量预测器，其中运动矢量预测器表示当前宏块的可能的运动矢量的近似。定义搜索模式。使用搜索模式搜索多个运动矢量预测器的每个运动矢量预测器。然后确定最终的运动矢量。

6. 发明授权

US08494794B2 Methods and systems for determining vascular bodily lumen information and guiding medical devices 有权
公开(公告)号：US08494794B2
公开(公告)日：2013-07-23
申请号：US13305630
申请日：2011-11-28
申请人： Goutam Dutta , Nitin Patil , Raghavan Subramaniyan
发明人： Goutam Dutta , Nitin Patil , Raghavan Subramaniyan
IPC分类号： G01R25/00
CPC分类号： G01R19/2513 , A61B5/02007 , A61B5/0538 , A61B5/064 , A61B5/6853 , A61B6/12 , A61B6/504 , A61B6/541 , A61B8/0891 , A61B8/565 , A61B8/582
摘要： Methods and systems for determining information about a vascular bodily lumen are described. An exemplary method includes generating an electrical signal, delivering the electrical signal to a plurality of excitation elements in the vicinity of the vascular bodily lumen, measuring a responsive electrical signal from a plurality of sensing elements in response to the delivered electrical signal, and determining a lumen dimension. Specific embodiments include generating a multiple frequency electrical signal. Another embodiment includes measuring a plurality of responsive signals at a plurality of frequencies. Still other embodiments include using spatial diversity of the excitation elements. Yet other embodiments use method for calibration and de-embedding of such measurements to determine the lumen dimensions. Diagnostic devices incorporating the method are also disclosed, including guide wires, catheters and implants. The methods and systems described herein are advantageous as they do not include injecting a second fluid for the measurements.

7. 发明授权

US08374689B2 Methods and systems for determining vascular bodily lumen information and guiding medical devices 有权
标题翻译：用于确定血管体内信息并指导医疗器械的方法和系统
公开(公告)号：US08374689B2
公开(公告)日：2013-02-12
申请号：US13305610
申请日：2011-11-28
申请人： Venugopal Gopinathan , Raghavan Subramaniyan , Goutam Dutta , Nitin Patil , Abhijit Patki
发明人： Venugopal Gopinathan , Raghavan Subramaniyan , Goutam Dutta , Nitin Patil , Abhijit Patki
IPC分类号： A61B5/00
CPC分类号： A61B5/1075 , A61B5/02007 , A61B5/0538 , A61B5/064 , A61B5/066 , A61B5/068 , A61B5/1076 , A61B5/1079 , A61B5/4851 , A61B5/489 , A61B5/6851 , A61B5/6852 , A61B5/6853 , A61B5/7271 , A61B6/504 , A61B6/5211 , A61B6/541 , A61B8/565 , A61B8/582 , A61B2034/2065 , A61B2090/061 , A61B2090/3966 , A61B2090/3983 , A61B2505/05 , A61B2562/043 , A61B2562/08 , A61M2025/0166 , G06T7/246 , G06T2207/10116 , G06T2207/30021 , G06T2207/30101 , G06T2207/30204 , G06T2207/30241
摘要： Methods and systems for determining information about a vascular bodily lumen are described. An exemplary method includes generating an electrical signal, delivering the electrical signal to a plurality of excitation elements in the vicinity of the vascular bodily lumen, measuring a responsive electrical signal from a plurality of sensing elements in response to the delivered electrical signal, and determining a lumen dimension. Specific embodiments include generating a multiple frequency electrical signal. Another embodiment includes measuring a plurality of responsive signals at a plurality of frequencies. Still other embodiments include using spatial diversity of the excitation elements. Yet other embodiments use method for calibration and de-embedding of such measurements to determine the lumen dimensions. Diagnostic devices incorporating the method are also disclosed, including guide wires, catheters and implants. The methods and systems described herein are advantageous as they do not include injecting a second fluid for the measurements.
摘要翻译：描述了用于确定关于血管体内腔的信息的方法和系统。一种示例性方法包括产生电信号，将电信号传送到血管体腔附近的多个激励元件，响应于输送的电信号测量来自多个感测元件的响应电信号，以及确定流明尺寸。具体实施例包括产生多频电信号。另一实施例包括以多个频率测量多个响应信号。其他实施例包括使用激励元件的空间分集。其他实施例使用用于校准和解嵌这些测量以确定管腔尺寸的方法。还公开了包括引导线，导管和植入物的包括该方法的诊断装置。本文描述的方法和系统是有利的，因为它们不包括为测量注入第二流体。

8. 发明授权

US07995858B2 Method and apparatus to facilitate creating ancillary information regarding errored image content 有权
标题翻译：促进创建关于错误图像内容的辅助信息的方法和装置
公开(公告)号：US07995858B2
公开(公告)日：2011-08-09
申请号：US11773680
申请日：2007-07-05
申请人： Tyrone D. Bekiares , Faisal Ishtiaq , Raghavan Subramaniyan
发明人： Tyrone D. Bekiares , Faisal Ishtiaq , Raghavan Subramaniyan
IPC分类号： G06K9/40
CPC分类号： H04N19/895 , H04N21/4425
摘要： Pixels in a provided image for which the content has been provided in error are identified. This image content is processed to provide a version of the image wherein the error is at least partially concealed while also creating ancillary information regarding the errored pixel(s) and the spatial location to which such pixel(s) corresponds to thereby provide a record that describes which pixels in the image content were provided in error. An optional user-selectable option can permit displaying either of the aforementioned corrected version of the image wherein the error is at least partially concealed and a version of the image wherein the ancillary information is used to depict the errored pixel(s) such that provided-in-error pixels are readily distinguished from correctly-provided pixels.
摘要翻译：识别提供了错误内容的提供图像中的像素。该图像内容被处理以提供图像的版本，其中错误至少部分地被隐藏，同时还创建关于错误像素和这样的像素对应的空间位置的辅助信息，从而提供记录，描述图像内容中的哪些像素被错误地提供。可选择的用户可选择选项可以允许显示所述图像的至少部分隐藏的所述图像的修正版本和图像的版本，其中所述辅助信息用于描绘错误像素，错误像素容易地与正确提供的像素区分开。

9. 发明申请

US20070058723A1 Adaptively adjusted slice width selection 审中-公开
标题翻译：自适应调整切片宽度选择
公开(公告)号：US20070058723A1
公开(公告)日：2007-03-15
申请号：US11226026
申请日：2005-09-14
申请人： Ashwin Chandramouly , Kumar Lava , Raghavan Subramaniyan
发明人： Ashwin Chandramouly , Kumar Lava , Raghavan Subramaniyan
IPC分类号： H04N11/04 , H04N7/12
CPC分类号： H04N19/188 , H04N19/157 , H04N19/174 , H04N19/61
摘要： A video encoder (300) and method (400) for encoding video content that performs providing (402) transform coefficients and associated side information for macroblocks forming part of a frame of a video stream. Next the method processes (403) the transform coefficients and associated side information to obtain entropy coded information for the macroblocks. Slices are formed (404) from the entropy coded information, the slices having slice widths that are adaptively adjusted based upon the non-uniformity of video content of the frame.
摘要翻译：用于编码对构成视频流的帧的一部分的宏块执行提供（402）变换系数和相关联的侧信息的视频内容的视频编码器（300）和方法（400）。接下来，该方法处理（403）变换系数和相关联的侧信息以获得宏块的熵编码信息。根据熵编码信息形成切片（404），切片具有根据帧的视频内容的不均匀性自适应地调整的切片宽度。

10. 发明申请

US20110306867A1 Methods and Systems for Determining Vascular Bodily Lumen Information and Guiding Medical Devices 有权
标题翻译：用于确定血管内体液信息和指导医疗器械的方法和系统
公开(公告)号：US20110306867A1
公开(公告)日：2011-12-15
申请号：US13159298
申请日：2011-06-13
申请人： Venugopal Gopinathan , Raghavan Subramaniyan , Goutam Dutta , Nitin Patil , Abhijit Patki
发明人： Venugopal Gopinathan , Raghavan Subramaniyan , Goutam Dutta , Nitin Patil , Abhijit Patki
IPC分类号： A61B5/05
CPC分类号： A61B5/1075 , A61B5/02007 , A61B5/0538 , A61B5/064 , A61B5/066 , A61B5/068 , A61B5/1076 , A61B5/1079 , A61B5/4851 , A61B5/489 , A61B5/6851 , A61B5/6852 , A61B5/6853 , A61B5/7271 , A61B6/504 , A61B6/5211 , A61B6/541 , A61B8/565 , A61B8/582 , A61B2034/2065 , A61B2090/061 , A61B2090/3966 , A61B2090/3983 , A61B2505/05 , A61B2562/043 , A61B2562/08 , A61M2025/0166 , G06T7/246 , G06T2207/10116 , G06T2207/30021 , G06T2207/30101 , G06T2207/30204 , G06T2207/30241
摘要： Methods and systems for determining information about a vascular bodily lumen are described. An exemplary method includes generating an electrical signal, delivering the electrical signal to a plurality of excitation elements in the vicinity of the vascular bodily lumen, measuring a responsive electrical signal from a plurality of sensing elements in response to the delivered electrical signal, and determining a lumen dimension. Specific embodiments include generating a multiple frequency electrical signal. Another embodiment includes measuring a plurality of responsive signals at a plurality of frequencies. Still other embodiments include using spatial diversity of the excitation elements. Yet other embodiments use method for calibration and de-embedding of such measurements to determine the lumen dimensions. Diagnostic devices incorporating the method are also disclosed, including guide wires, catheters and implants. The methods and systems described herein are advantageous as they do not include injecting a second fluid for the measurements.
摘要翻译：描述了用于确定关于血管体内腔的信息的方法和系统。一种示例性方法包括产生电信号，将电信号传送到血管体腔附近的多个激励元件，响应于输送的电信号测量来自多个感测元件的响应电信号，以及确定流明尺寸。具体实施例包括产生多频电信号。另一实施例包括以多个频率测量多个响应信号。其他实施例包括使用激励元件的空间分集。其他实施例使用用于校准和解嵌这些测量以确定管腔尺寸的方法。还公开了包括引导线，导管和植入物的包括该方法的诊断装置。本文描述的方法和系统是有利的，因为它们不包括为测量注入第二流体。

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