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1. 发明授权

US10932739B2 Dynamic normalization of data for perfusion comparison and quantification 有权
公开(公告)号：US10932739B2
公开(公告)日：2021-03-02
申请号：US14004195
申请日：2012-02-28
申请人： Raoul Florent , Cecile Dufour , Vincent Auvray , Odile Bonnefous
发明人： Raoul Florent , Cecile Dufour , Vincent Auvray , Odile Bonnefous
IPC分类号： A61B6/00 , G06T7/00 , A61B6/12 , G06T5/50 , G06T5/00
摘要： The invention relates to x-ray imaging technology as well as image post-processing. Particularly, the present invention relates to post-processing of perfusion image data acquired by an x-ray imaging apparatus by absolutely or relatively normalizing perfusion image data to allow a preferred comparison of the image data, both with regard to different acquisitions as well as different patients. To allow normalization of perfusion image data, it may be desirable to know the amount of contrast agent injected, which remains in a coronary. Subsequently, image parameters may be adapted or normalized based on the known amount of contrast agent within the coronary for normalization of perfusion image data. To obtain a precise amount of injected contrast agent, the injected volume of contrast agent flowing through a defined region or section of a vessel may be estimated. Said injected volume of contrast agent may thus be deduced from the estimation of the total volume flow at this location. Accordingly, a method (10) is provided for dynamic normalization of data for perfusion comparison and quantification, comprising the steps of determining (20) a total volume flow or an amount of a contrast agent in a blood vessel and normalizing (34) perfusion data based on the determined total volume flow or amount of contrast agent.

2. 发明申请

US20140005538A1 DYNAMIC NORMALIZATION OF DATA FOR PERFUSION COMPARISON AD QUANTIFICATION 审中-公开
标题翻译：用于灌注比较的AD数据的数据的动态正规化（DYNAMIC NORMALIZATION OF DATA FOR PERFUSION COMPARISON AD QUANTIFICATION）
公开(公告)号：US20140005538A1
公开(公告)日：2014-01-02
申请号：US14004195
申请日：2012-02-28
申请人： Raoul Florent , Cecile Dufour , Vincent Auvray , Odile Bonnefous
发明人： Raoul Florent , Cecile Dufour , Vincent Auvray , Odile Bonnefous
IPC分类号： A61B6/00
CPC分类号： A61B6/481 , A61B6/12 , A61B6/4441 , A61B6/464 , A61B6/486 , A61B6/503 , A61B6/504 , A61B6/507 , A61B6/5217 , A61B6/5235 , A61B6/583 , G06T5/008 , G06T5/50 , G06T7/0012 , G06T2207/10116 , G06T2207/30104
摘要： The invention relates to x-ray imaging technology as well as image post-processing. Particularly, the present invention relates to post-processing of perfusion image data acquired by an x-ray imaging apparatus by absolutely or relatively normalizing perfusion image data to allow a preferred comparison of the image data, both with regard to different acquisitions as well as different patients. To allow normalization of perfusion image data, it may be desirable to know the amount of contrast agent injected, which remains in a coronary. Subsequently, image parameters may be adapted or normalized based on the known amount of contrast agent within the coronary for normalization of perfusion image data. To obtain a precise amount of injected contrast agent, the injected volume of contrast agent flowing through a defined region or section of a vessel may be estimated. Said injected volume of contrast agent may thus be deduced from the estimation of the total volume flow at this location. Accordingly, a method (10) is provided for dynamic normalization of data for perfusion comparison and quantification, comprising the steps of determining (20) a total volume flow or an amount of a contrast agent in a blood vessel and normalizing (34) perfusion data based on the determined total volume flow or amount of contrast agent.
摘要翻译：本发明涉及X射线成像技术以及图像后处理。特别地，本发明涉及通过绝对或相对规范化灌注图像数据来获得的由X射线成像设备获取的灌注图像数据的后处理，以允许针对不同采集以及不同的采集的图像数据的优选比较耐心。为了允许灌注图像数据的归一化，可能需要知道留在冠状动脉中的造影剂的注入量。随后，可以基于冠状动脉内的已知量的造影剂来调整或归一化图像参数，以用于灌注图像数据的归一化。为了获得精确量的注射造影剂，可以估计流过容器的限定区域或部分的造影剂的注射体积。因此，可以从该位置处的总体积流量的估计推断所述注射量的造影剂。因此，提供了一种用于动态规范用于灌注比较和定量的数据的方法（10），包括以下步骤：确定（20）血管中的总体积流量或造影剂的量并使（34）灌注数据基于确定的总体积流量或造影剂的量。

3. 发明授权

US08102917B2 Video encoder using a refresh map 有权
标题翻译：视频编码器使用刷新映射
公开(公告)号：US08102917B2
公开(公告)日：2012-01-24
申请号：US11915138
申请日：2006-05-18
申请人： Nicolas Vanhaelewyn , Cecile Dufour
发明人： Nicolas Vanhaelewyn , Cecile Dufour
IPC分类号： H04N7/12
CPC分类号： H04N19/89 , H04N19/107 , H04N19/139 , H04N19/147 , H04N19/166 , H04N19/176 , H04N19/182 , H04N19/61
摘要： The present invention relates to a video encoder (ENC) for encoding frames (FR) of a video signal before transmission, said video encoder (ENC) including an encoding decision unit (EDU) for deciding which kind of coding will be used for each data of said frame (FR) in an encoding unit (ENU). Said video encoder (ENC) further implements a freshness map calculation unit (FMCU) for calculating, throughout the time, for each data of said frame (FR), a corresponding freshness value (FV) taking into account Intra and Inter prediction mechanisms, independently from a calculation of a distortion. Said freshness value (FV) express on which degree encoded data (ED) are relying on previously transmitted data and said freshness value (FV) is used by said encoding decision unit (EDU).
摘要翻译：本发明涉及一种用于对传输之前的视频信号的帧（FR）进行编码的视频编码器（ENC），所述视频编码器（ENC）包括一个编码决定单元（EDU），用于决定哪种编码将用于每个数据的帧（FR）在编码单元（ENU）中。所述视频编码器（ENC）进一步实现新鲜度映射计算单元（FMCU），用于在整个时间内针对所述帧（FR）的每个数据计算相应的新鲜度值（FV），其独立地考虑了帧内和帧间预测机制从计算失真。所述新鲜度值（FV）表示哪个度编码数据（ED）依赖于先前发送的数据，并且所述新鲜度值（FV）由所述编码决定单元（EDU）使用。

4. 发明申请

US20060165296A1 Video coding and decoding method 审中-公开
标题翻译：视频编解码方式
公开(公告)号：US20060165296A1
公开(公告)日：2006-07-27
申请号：US10541006
申请日：2003-12-22
申请人： Cecile Dufour , Gwenaelle Marquant , Stephane Valente
发明人： Cecile Dufour , Gwenaelle Marquant , Stephane Valente
IPC分类号： G06K9/36 , G06K9/46
CPC分类号： H04N19/21 , H04N19/17 , H04N19/61
摘要： The invention relates to a video coding method applied to an original video sequence in which the successive frames or video object planes (VOPs) include one or several arbitrarily shaped video objects (VOs) defined by their texture and motion components and an additional shape component. According to the invention, said method comprises a non object-oriented coding step applied to a small numer of frames of the video sequence, an object-oriented coding step, applied to all the frames of the sequence that follow said small number of frames, and a sequencing step, provided for controlling that said non object-oriented and object-oriented coding steps are respectively applied to the appropriate frames, in order to generate a coded bitstream including non object-oriented coded data corresponding to said small number of frames followed by object-oriented coded data corresponding to said folluwing frames. The invention also relates to a corresponding video decoding method.
摘要翻译：本发明涉及一种应用于原始视频序列的视频编码方法，其中连续帧或视频对象平面（VOP）包括由其纹理和运动分量定义的一个或几个任意形状的视频对象（VO）和附加形状分量。根据本发明，所述方法包括应用于视频序列的小数字的非面向对象编码步骤，面向对象编码步骤，应用于所述少数帧之后的序列的所有帧，以及排序步骤，用于控制所述非面向对象和面向对象的编码步骤分别应用于适当的帧，以便生成编码的比特流，包括与所述少量帧对应的非面向对象的编码数据通过对应于所述叶片画面的面向对象的编码数据。本发明还涉及相应的视频解码方法。

5. 发明申请

US20050100086A1 Video coding and decoding method 审中-公开
标题翻译：视频编解码方式
公开(公告)号：US20050100086A1
公开(公告)日：2005-05-12
申请号：US10498764
申请日：2002-12-11
申请人： Cecile Dufour , Gwenaelle Marquant , Stephane Valente
发明人： Cecile Dufour , Gwenaelle Marquant , Stephane Valente
IPC分类号： H04N19/70 , G06T9/00 , H04N19/25 , H04N7/12
CPC分类号： G06T9/20 , H04N19/21 , H04N19/25 , H04N19/70
摘要： The invention relates to a video coding method and device applied to a sequence of frames and generating a coded bitstream in which each data item is described by means of a bitstream syntax allowing any decoder to recognize and decode all the elements of the content of said bitstream. According to the invention, which finds an application for instance within the video compression standard MPEG-4, the syntax comprises a specific one bit flag provided for indicating at a high level description the presence, or not, of a shape for each video object of the scenes of the sequence. This flag is transmitted in the coded bitstream, and its value is read at the decoding side for controlling correspondingly the decoding step.
摘要翻译：本发明涉及一种应用于帧序列并产生编码比特流的视频编码方法和装置，其中通过允许任何解码器识别和解码所述比特流的内容的所有元素的比特流语法来描述每个数据项。根据本发明，其发现例如在视频压缩标准MPEG-4内的应用，语法包括提供用于以高级描述指示每个视频对象的形状的存在或不存在的特定一位标志序列的场景。在编码比特流中发送该标志，在解码侧读取其值，进行相应的解码步骤的控制。

6. 发明申请

US20110077515A1 TISSUE STRAIN ANALYSIS 审中-公开
标题翻译：组织应变分析
公开(公告)号：US20110077515A1
公开(公告)日：2011-03-31
申请号：US12993591
申请日：2009-05-20
申请人： Olivier Gerard , Thomas Gauthiera , Cecile Dufour
发明人： Olivier Gerard , Thomas Gauthiera , Cecile Dufour
IPC分类号： A61B8/00
CPC分类号： A61B8/485 , A61B8/08 , A61B8/0825 , A61B8/488
摘要： Elasticity variation within biological tissue is often correlated with its pathology. Variation of elasticity can be assessed by specific ultrasound acquisition sequences during which pressure is applied. The tissue motion and deformation during those sequences is correlated to the tissue stiffness. The present invention describes a hybrid method that combines a real-time monitoring mode during acquisition and a non-real-time fine analysis after acquisition. This method allows early identification and fair assessment of pathology from elastographic analysis to obtain the best possible result for elastography assessment.
摘要翻译：生物组织内的弹性变化往往与其病理学相关。可以通过施加压力的特定超声波获取序列来评估弹性变化。组织运动和这些序列中的变形与组织刚度相关。本发明描述了一种混合方法，其在采集期间组合实时监控模式和在获取后非实时精细分析。这种方法可以早期识别和弹性分析的病理学评估，以获得弹性成像评估的最佳结果。

7. 发明申请

US20080253452A1 Video Encoder Using a Refresh Map 有权
标题翻译：视频编码器使用刷新映射
公开(公告)号：US20080253452A1
公开(公告)日：2008-10-16
申请号：US11915138
申请日：2006-05-18
申请人： Nicolas Vanhaelewyn , Cecile Dufour
发明人： Nicolas Vanhaelewyn , Cecile Dufour
IPC分类号： H04N7/32 , H04B1/66
CPC分类号： H04N19/89 , H04N19/107 , H04N19/139 , H04N19/147 , H04N19/166 , H04N19/176 , H04N19/182 , H04N19/61
摘要： The present invention relates to a video encoder (ENC) for encoding frames (FR) of a video signal before transmission, said video encoder (ENC) including an encoding decision unit (EDU) for deciding which kind of coding will be used for each data of said frame (FR) in an encoding unit (ENU). Said video encoder (ENC) further implements a freshness map calculation unit (FMCU) for calculating, throughout the time, for each data of said frame (FR), a corresponding freshness value (FV) taking into account Intra and Inter prediction mechanisms, independently from a calculation of a distortion. Said freshness value (FV) express on which degree encoded data (ED) are relying on previously transmitted data and said freshness value (FV) is used by said encoding decision unit (EDU).
摘要翻译：本发明涉及一种用于对传输之前的视频信号的帧（FR）进行编码的视频编码器（ENC），所述视频编码器（ENC）包括一个编码决定单元（EDU），用于决定哪种编码将用于每个数据的帧（FR）在编码单元（ENU）中。所述视频编码器（ENC）进一步实现新鲜度映射计算单元（FMCU），用于在整个时间内针对所述帧（FR）的每个数据计算相应的新鲜度值（FV），其独立地考虑了帧内和帧间预测机制从计算失真。所述新鲜度值（FV）表示哪个度编码数据（ED）依赖于先前发送的数据，并且所述新鲜度值（FV）由所述编码决定单元（EDU）使用。

8. 发明授权

US06959046B2 Resynchronization method for decoding video 有权
标题翻译：解码视频的再同步方法
公开(公告)号：US06959046B2
公开(公告)日：2005-10-25
申请号：US09795614
申请日：2001-02-28
申请人： Cecile Dufour , Yves Ramanzin
发明人： Cecile Dufour , Yves Ramanzin
IPC分类号： H03M7/40 , H04N7/56 , H04N19/68 , H04N19/89 , H04B1/66 , H04N7/12
CPC分类号： H04N7/56 , H04N19/68 , H04N19/89
摘要： The present invention relates to a method of resynchronization that attempts to enable a resynchronization of a compressed video data signal received by a decoder, after a transmission error has been detected in said compressed video data signal.The method of resynchronization is based on the use of a resynchronization word. In order to ensure a proper decoding of the compressed video data signal the resynchronization word is distinguishable from the known VLC words as well as the VOP start code.
摘要翻译：本发明涉及在所述压缩视频数据信号中检测到传输错误之后尝试使解码器接收到的压缩视频数据信号重新同步的再同步方法。重新同步的方法是基于使用重新同步的单词。为了确保压缩视频数据信号的正确解码，重新同步字与已知VLC字以及VOP起始码可区分。

9. 发明授权

US08548050B2 Video coding method with selectable black and white mode 有权
标题翻译：视频编码方法，可选择黑白模式
公开(公告)号：US08548050B2
公开(公告)日：2013-10-01
申请号：US10208361
申请日：2002-07-30
申请人： Cecile Dufour , Gwenaelle Marquant , Stephane Edouard Valente
发明人： Cecile Dufour , Gwenaelle Marquant , Stephane Edouard Valente
IPC分类号： H04N7/12 , H04N11/02 , H04N11/04
CPC分类号： H04N19/00 , H04N19/186 , H04N19/70
摘要： A video coding method applied to an input signal consisting of a sequence of frames represented by one luminance matrix and two chrominance matrices generates a coded bitstream in which each data item is described by a bitstream syntax allowing any decoder to recognize and decode all the segments of the content of the bitstream. The syntax includes a flag provided for indicating at a high level description the presence, or absence, of chrominance components in the coded bitstream, and therefore allowing to deliver, at the decoding side, the information according to which chrominance descriptive elements have to be decoded, or not.
摘要翻译：应用于由一个亮度矩阵和两个色度矩阵表示的帧序列组成的输入信号的视频编码方法产生编码比特流，其中通过比特流语法描述每个数据项，允许任何解码器识别和解码比特流的内容。语法包括提供用于指示编码比特流中的色度分量的存在或不存在的高级描述的标志，并且因此允许在解码侧传递根据哪个色度描述元素必须被解码的信息，或不。

10. 发明申请

US20050141768A1 Video encoding method and corresponding device and signal 审中-公开
标题翻译：视频编码方式及相应设备及信号
公开(公告)号：US20050141768A1
公开(公告)日：2005-06-30
申请号：US10509237
申请日：2003-03-19
申请人： Cecile Dufour , Gwenaelle Marquant , Stephane Valente
发明人： Cecile Dufour , Gwenaelle Marquant , Stephane Valente
IPC分类号： H03M7/30 , H04N7/26 , G06K9/50
CPC分类号： H04N19/25
摘要： The invention relates to an encoding method applied to a video sequence corresponding to successive scenes and generating a coded bitstream in which each data item is described by means of a bitstream syntax allowing, at the decoding side, to recognize and decode all the elements of the content of this coded bitstream. According to the invention, said syntax comprises specific information indicating at a high description level in said bitstream the presence, or not, of various additional channels that can be encountered to describe the content of said bitstream. Several examples of specific information are given.
摘要翻译：本发明涉及一种应用于对应于连续场景的视频序列的编码方法，并且生成编码比特流，其中通过比特流语法描述每个数据项，允许在解码侧识别和解码所有的元素该编码比特流的内容。根据本发明，所述语法包括在所述比特流中以高描述级指示指示可以遇到描述所述比特流的内容的各种附加信道的特定信息。给出了几个具体信息的例子。

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