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1. 发明授权

US10349048B2 Scene change detection for perceptual quality evaluation in video sequences 有权
公开(公告)号：US10349048B2
公开(公告)日：2019-07-09
申请号：US14351483
申请日：2011-10-11
申请人： Martin Pettersson , Savvas Argyropoulos , David Lindegren , Peter List
发明人： Martin Pettersson , Savvas Argyropoulos , David Lindegren , Peter List
IPC分类号： H04N17/00 , H04N5/14 , H04N5/93
摘要： There are provided a plurality of methods for detecting a scene change in a streamed video, the streamed video comprising a series of pictures. An example method comprises calculating, for a plurality of positions, a difference between the costs of coding macro-blocks at the same position in successive pictures. The method further comprises identifying a new scene when the sum of the differences for a plurality of positions meets a threshold criterion. There is further provided a method of determining the perceptual impact of a packet loss on a streamed video the method comprising: identifying a packet loss; and determining if the lost packet contained information relating to a picture at the start of a new scene, wherein a new scene is detected using one of the methods disclosed herein.

2. 发明申请

US20140376886A1 SCENE CHANGE DETECTION FOR PERCEPTUAL QUALITY EVALUATION IN VIDEO SEQUENCES 审中-公开
标题翻译：视频序列中认知质量评估的场景变化检测
公开(公告)号：US20140376886A1
公开(公告)日：2014-12-25
申请号：US14351483
申请日：2011-10-11
申请人： Martin Pettersson , Savvas Argyropoulos , David Lindegren , Peter List
发明人： Martin Pettersson , Savvas Argyropoulos , David Lindegren , Peter List
IPC分类号： H04N17/00 , H04N5/93
CPC分类号： H04N17/004 , H04N5/147 , H04N5/93
摘要： There are provided a plurality of methods for detecting a scene change in a streamed video, the streamed video comprising a series of pictures. An example method comprises calculating, for a plurality of positions, a difference between the costs of coding macro-blocks at the same position in successive pictures. The method further comprises identifying a new scene when the sum of the differences for a plurality of positions meets a threshold criterion. There is further provided a method of determining the perceptual impact of a packet loss on a streamed video the method comprising: identifying a packet loss; and determining if the lost packet contained information relating to a picture at the start of a new scene, wherein a new scene is detected using one of the methods disclosed herein.
摘要翻译：提供了用于检测流式视频中的场景变化的多种方法，该流式视频包括一系列图片。对于多个位置，示例性方法包括在连续图像中的相同位置处编码宏块的成本之间的差异。该方法还包括当多个位置的差值之和满足阈值标准时识别新场景。还提供了一种确定分组丢失对流式视频的感知影响的方法，该方法包括：识别分组丢失; 以及确定丢失分组是否包含与新场景开始时的图片相关的信息，其中使用本文公开的方法之一来检测新场景。

3. 发明申请

US20140294362A1 METHOD AND APPARATUS FOR DETECTING QUALITY DEFECTS IN A VIDEO BITSTREAM 有权
标题翻译：用于检测视频比特质量质量缺陷的方法和装置
公开(公告)号：US20140294362A1
公开(公告)日：2014-10-02
申请号：US14363607
申请日：2011-12-09
申请人： Martin Pettersson , Savvas Argyropoulos
发明人： Martin Pettersson , Savvas Argyropoulos
IPC分类号： H04N7/64
CPC分类号： H04N19/85 , H04N17/004 , H04N19/89 , H04N21/44008
摘要： There is provided an apparatus for detecting a quality defect in a video sequence, the apparatus comprising: a receiver arranged to receive a video bitstream representing a video sequence; and a defect module arranged to determine a measure of quantization parameter for each picture of the video sequence, the defect module further arranged to identify a quality defect when an abrupt change in the measure of quantization parameter occurs.
摘要翻译：提供了一种用于检测视频序列中的质量缺陷的装置，该装置包括：接收机，被配置为接收表示视频序列的视频比特流; 以及缺陷模块，被布置为确定所述视频序列的每个图像的量化参数的度量，所述缺陷模块还被布置为当出现量化参数测量的突然变化时识别质量缺陷。

4. 发明授权

US09686515B2 Method and apparatus for detecting quality defects in a video bitstream 有权
公开(公告)号：US09686515B2
公开(公告)日：2017-06-20
申请号：US14363607
申请日：2011-12-09
申请人： Martin Pettersson , Savvas Argyropoulos
发明人： Martin Pettersson , Savvas Argyropoulos
IPC分类号： H04N5/94 , H04N9/88 , H04N9/80 , H04N7/64 , H04N17/00 , H04N21/44 , H04N19/89
CPC分类号： H04N19/85 , H04N17/004 , H04N19/89 , H04N21/44008
摘要： There is provided an apparatus for detecting a quality defect in a video sequence, the apparatus comprising: a receiver arranged to receive a video bitstream representing a video sequence; and a defect module arranged to determine a measure of quantization parameter for each picture of the video sequence, the defect module further arranged to identify a quality defect when an abrupt change in the measure of quantization parameter occurs.

5. 发明申请

US20110010625A1 Method for Manually Optimizing Jitter, Delay and Synch Levels in Audio-Video Transmission 有权
标题翻译：手机优化音视频传输抖动，延迟和同步电平的方法
公开(公告)号：US20110010625A1
公开(公告)日：2011-01-13
申请号：US12921439
申请日：2008-03-13
申请人： Martin Pettersson , Bo Burman , Mats Folkesson , Valentin Kulyk
发明人： Martin Pettersson , Bo Burman , Mats Folkesson , Valentin Kulyk
IPC分类号： G06F15/16 , G06F3/01
CPC分类号： H04N21/23406 , G06F3/04847 , H04J3/0632 , H04L1/0022 , H04L1/1838 , H04L47/10 , H04L47/12 , H04L47/14 , H04L47/2416 , H04L47/283 , H04L49/90 , H04L65/80 , H04N21/2368 , H04N21/4307 , H04N21/4341 , H04N21/44004 , H04N21/485
摘要： A communication device and method provide selective control of a level of buffering of at least one data stream. The communication device includes a jitter buffer (202), a jitter buffer control unit (204) and a user interface (206). An instruction received via an input to a user interface (206) indicates a jitter buffer strategy (510), such as enabling a jitter buffer or setting a size of a jitter buffer, based on the user input. The control unit (204) sets the buffer strategy based in the instruction, and a data stream transmitted via a packet-switched network is received (530) and buffered for play out based on the buffer strategy (540).
摘要翻译：通信设备和方法提供对至少一个数据流的缓冲级别的选择性控制。通信设备包括抖动缓冲器（202），抖动缓冲器控制单元（204）和用户接口（206）。经由用户接口（206）的输入接收的指令基于用户输入指示抖动缓冲策略（510），例如启用抖动缓冲器或设置抖动缓冲区的大小。控制单元（204）基于指令设置缓冲策略，并且经由分组交换网络发送的数据流被接收（530）并且基于缓冲策略进行缓冲以进行播放（540）。

6. 发明申请

US20050190741A1 Autonomous communication system 审中-公开
标题翻译：自主通信系统
公开(公告)号：US20050190741A1
公开(公告)日：2005-09-01
申请号：US10518906
申请日：2003-06-12
申请人： Martin Pettersson
发明人： Martin Pettersson
IPC分类号： H04L12/28 , H04L12/56 , H04B7/212
CPC分类号： H04W72/0446 , H04W84/18
摘要： The invention relates to communication of data in a time division multiple access system where the data is transmitted wirelessly between station (MS1-MS6; BS1-BS3) in time slots. The time slots are arranged in frames of a repeating frame structure. The stations (MS1-MS6; BS1-BS3) autonomously select time slots for transmission of data according to a self-organizing transmission algorithm, which allows a first station (MS1) to reuse a time slot that is allocated to a second station (MS2-MS6, BS2, BS3). According to the invention an addressed message (MM1Adr) is sent from a first base station (BS1) to a mobile station (MS1). This station transmits am acknowledgement message (AckM1B1) in response to the addressed message (MM1Adr) in order to confirm a safe receipt of the addressed message (MM1Adr). If due to for example a high traffic load, the acknowledgement message (AckM1B1) cannot be received directly by the first base station (BS1), the mobile station (MS1) sends this message (AckM1B1) via a second base station (BS2) to a message handling entity (MHE) in a network (N), which is responsible for the transmission of the addressed message (MM1Adr). The message handling entity (MHE) may either be a separate node in the network (N) or be included in the first station (BS1). Thanks to the proposed solution, unnecessary repeated transmissions of the addressed message (MM1Adr) can be avoided, and consequently valuable wireless bandwidth be saved.
摘要翻译：本发明涉及在时分多址系统中数据的通信，其中数据在时隙中在站（MS 1 -MS 6; BS 1 -BS 3）之间无线地发送。时隙以重复帧结构的帧布置。站（MS 1 -MS 6; BS 1 -BS 3）根据自组织传输算法自主选择用于传输数据的时隙，这允许第一站（MS 1）重用分配给第二站（MS 2 -MS 6，BS 2，BS 3）。根据本发明，从第一基站（BS 1）向移动台（MS 1）发送一个寻址消息（M SUB MAD）。响应于所寻址的消息（M ^{M1 Adr ），该站发送确认消息（Ack ^{M1 B1 以确认所寻址的消息的安全接收（M＆lt; M1＆gt;＆lt; Adr＆gt;）。如果由于例如高业务负载，则确认消息（Ack ^{M1 B1>）不能被第一基站（BS 1）直接接收，移动站 MS 1）经由第二基站（BS 2）向网络（N）中的消息处理实体（MHE）发送该消息（Ack ^{M1 B1 ），其中负责传送寻址的消息（M＆lt; M1＆gt;＆lt; SUB＆gt;＆gt;＆gt;）。消息处理实体（MHE）可以是网络（N）中的单独节点，也可以包括在第一站（BS 1）中。由于所提出的解决方案，可以避免所寻址的消息（M＆lt; M1＆gt;＆gt; Adr＆lt;＆gt;）的不必要的重复发送，因此节省了有价值的无线带宽。}}}}

7. 发明授权

US09460544B2 Device, method and computer program for generating a synthesized image from input images representing differing views 有权
标题翻译：用于从表示不同视图的输入图像生成合成图像的装置，方法和计算机程序
公开(公告)号：US09460544B2
公开(公告)日：2016-10-04
申请号：US14237044
申请日：2011-10-31
申请人： Björn Johansson , Martin Pettersson , Thomas Rusert
发明人： Björn Johansson , Martin Pettersson , Thomas Rusert
IPC分类号： G06T15/00 , G06T15/20 , G06T15/50
CPC分类号： G06T15/00 , G01C21/00 , G06T15/205 , G06T15/503
摘要： The invention relates to a method of generating a synthesized image representing a view of a scene from a first input image representing the view and a second input image representing the view, the synthesized image comprising synthesized image positions, by assigning a synthesized image data value to a synthesized image position. The method comprises determining whether input images have at the synthesized image position data values associated with them. If either one has a data value associated, that data value is assigned to the synthesized image position. If both, an average of both values is assigned. The average is a weighed average, with weighing factors being a function of a distance or distances to a closest image position with no image data value or valid image data value assigned.
摘要翻译：本发明涉及一种通过将合成图像数据值分配给表示视频的第一输入图像和表示视图的第二输入图像，包括合成图像位置的合成图像来生成表示场景视图的合成图像的方法，合成图像位置。该方法包括确定输入图像是否具有与它们相关联的合成图像位置数据值。如果任何一个具有关联的数据值，则该数据值被分配给合成图像位置。如果两者都是这两个值的平均值。平均值是权重平均值，称重系数是距离最近图像位置的距离或距离的函数，没有图像数据值或有效图像数据值分配。

8. 发明申请

US20150279019A1 EFFICIENT FREE-SPACE FINGER RECOGNITION 有权
标题翻译：高效的自由空间指纹识别
公开(公告)号：US20150279019A1
公开(公告)日：2015-10-01
申请号：US14225941
申请日：2014-03-26
申请人： Chih-Fan Hsin , Martin Pettersson
发明人： Chih-Fan Hsin , Martin Pettersson
IPC分类号： G06T7/00 , H04N7/18 , G06F3/03 , G06K9/00
CPC分类号： G06T7/73 , G06F3/017 , G06F3/0304 , G06F3/0308 , G06F3/0425 , G06K9/00375 , G06K9/00382 , G06K9/44 , G06T7/194 , G06T2207/10028 , G06T2207/10048 , G06T2207/30181 , G06T2207/30196 , H04N7/183
摘要： Systems and techniques for efficient free-space finger recognition are herein described. A surface in a depth image may be identified. One or more blobs in the depth image may be identified. The identified blobs may be analyzed to determine if a blob intersects with an edge of the depth image and classified as a potential hand if the blob does intersect with the edge or classified as an object otherwise.
摘要翻译：这里描述了用于高效自由空间手指识别的系统和技术。可以识别深度图像中的表面。可以识别深度图像中的一个或多个斑点。可以分析识别的斑点以确定斑点是否与深度图像的边缘相交并且如果斑点与边缘相交或被分类为对象则被分类为潜在的手。

9. 发明申请

US20120057002A1 Viewpoint Navigation 有权
标题翻译：观点导航
公开(公告)号：US20120057002A1
公开(公告)日：2012-03-08
申请号：US13182507
申请日：2011-07-14
申请人： Beatriz Grafulla-Gonzalez , Martin Pettersson
发明人： Beatriz Grafulla-Gonzalez , Martin Pettersson
IPC分类号： H04N13/04 , H04N9/80
CPC分类号： H04N21/4325 , H04N5/228 , H04N13/158 , H04N19/597
摘要： Viewer interaction herein triggers switching from a first view point to a second view point and thereby controls presentation of video sequences. Each video sequence comprises a sequence of images of one and the same subject and is associated with a respective view point. Images are obtained from a first video sequence associated with a first view point and are provided for presentation. Viewer input information is received that indicates a desire to present a second view point. In response, a start position within a second video sequence associated with the second view point is determined, and the obtaining of images from the first video sequence is discontinued as of the determined start position. Images are then obtained from the second video sequence associated with the second view point, starting from the determined start position, and are then provided for presentation.
摘要翻译：这里的观看者交互触发从第一视点切换到第二视点，从而控制视频序列的呈现。每个视频序列包括一个并且相同被摄体的一系列图像，并且与相应的视点相关联。从与第一视点相关联的第一视频序列获得图像，并且被提供用于呈现。接收到指示呈现第二视点的愿望的观看者输入信息。作为响应，确定与第二视点相关联的第二视频序列内的开始位置，并且从确定的开始位置开始从第一视频序列获取图像。然后从确定的开始位置开始，从与第二视点相关联的第二视频序列获得图像，然后提供用于呈现。

10. 发明申请

US20110243246A1 Method and Apparatus for Avoiding Quality Deterioration of Transmitted Media Content 有权
标题翻译：用于避免传播媒体内容质量恶化的方法和装置
公开(公告)号：US20110243246A1
公开(公告)日：2011-10-06
申请号：US13139379
申请日：2008-12-15
申请人： Martin Pettersson
发明人： Martin Pettersson
IPC分类号： H04N7/26
CPC分类号： H04N21/4884 , H04N19/132 , H04N19/136 , H04N19/176 , H04N19/27 , H04N19/85 , H04N19/86 , H04N21/23418 , H04N21/4312 , H04N21/4318 , H04N21/631 , H04N21/8146
摘要： In a method of distributing media content with overlay graphical information from a media server to a media client the graphical information is extracted from the media content and transmitted to a media client. Prior to encoding the media content, each frame that comprises an area of graphical information is processed in separate blocks, in a manner such that an introduction of visual artefacts in the vicinity of the graphical information is avoided. The encoded media content is then transmitted to the media client, where the media content will be reproduced by adding the graphical information as an overlay on top of the decoded media content, but without comprising any coding originated artefacts.
摘要翻译：在从媒体服务器向媒体客户端分发具有覆盖图形信息的媒体内容的方法中，从媒体内容中提取图形信息并传送到媒体客户端。在对媒体内容进行编码之前，包括图形信息区域的每个帧以单独的块来处理，使得避免在图形信息附近引入视觉伪影。然后将编码的媒体内容传送到媒体客户端，其中将通过将图形信息作为叠加在解码的媒体内容之上，但不包括任何编码的原始文物来再现媒体内容。

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