公开(公告)号：US08565525B2

公开(公告)日：2013-10-22

申请号：US12087251

申请日：2005-12-30

申请人： Luca Rossato ,  Andrea Varesio

发明人： Luca Rossato ,  Andrea Varesio

IPC分类号： G06K9/34 ,  G06K9/48 ,  G06K9/36

CPC分类号： G06K9/38 ,  G06T7/12 ,  G06T7/155 ,  G06T7/194 ,  G06T2207/10016 ,  G06T2207/20081

摘要： A method of image processing, includes: receiving at least one video frame of a video sequence, the at least one video frame including at least one foreground subject and a background; and processing the at least one video frame so as to separate the at least one foreground subject from the background. The processing includes: obtaining a reference image including the background; comparing the at least one video frame to the reference image; and generating a pixel mask as a result of the comparison, the pixel mask indicating whether a pixel of the at least one video frame belongs to the foreground subject or to the background. The method further comprises at least partially determining edges of the at least one foreground subject in the at least one video frame, and modifying the pixel mask based on the determined foreground subject edges.

摘要翻译： 一种图像处理方法，包括：接收视频序列的至少一个视频帧，所述至少一个视频帧包括至少一个前景主题和背景; 以及处理所述至少一个视频帧，以将所述至少一个前景被摄体与所述背景分离。 该处理包括：获得包括背景的参考图像; 将所述至少一个视频帧与所述参考图像进行比较; 以及作为所述比较的结果生成像素掩模，所述像素掩码指示所述至少一个视频帧的像素是否属于前景对象或背景。 该方法还包括至少部分地确定至少一个视频帧中的至少一个前景对象的边缘，以及基于所确定的前景对象边缘来修改像素掩码。

公开(公告)号：US08204321B2

公开(公告)日：2012-06-19

申请号：US11918903

申请日：2005-04-19

申请人： Luca Rossato ,  Andrea Varesio

发明人： Luca Rossato ,  Andrea Varesio

IPC分类号： G06K9/36

CPC分类号： H04N19/136 ,  H04N19/103 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/196 ,  H04N19/61

摘要： A method of coding a digital image includes subdividing the image into image blocks formed by a plurality of pixels, and processing each image block of the image, by determining a skip-mode prediction block in respect of the current image block being processed, calculating a difference between the image block being processed and the skip-mode prediction block, and comparing the calculated difference to a predetermined threshold. The calculation of the difference between the current image block being processed and the skip-mode prediction block includes: calculating a plurality of pixel-by-pixel differences between a pixel of the current image block and a corresponding pixel of the skip-mode prediction image block; associating a respective quantized value with each pixel-by-pixel difference; and cumulating the quantized values.

摘要翻译： 编码数字图像的方法包括：将图像细分成由多个像素形成的图像块，并且通过对正在处理的当前图像块确定一个跳过模式预测块，计算一个图像块， 正在处理的图像块和跳过模式预测块之间的差异，并将计算出的差值与预定阈值进行比较。 正在处理的当前图像块和跳过模式预测块之间的差的计算包括：计算当前图像块的像素与跳过模式预测图像的对应像素之间的多个像素像素差异 块; 将各个量化值与每个像素/像素差值相关联; 并累积量化值。

公开(公告)号：US08532000B2

公开(公告)日：2013-09-10

申请号：US12084429

申请日：2005-11-03

申请人： Bruno Bottiero ,  Andrea De Martin ,  Alessandro Porta ,  Andrea Varesio

发明人： Bruno Bottiero ,  Andrea De Martin ,  Alessandro Porta ,  Andrea Varesio

IPC分类号： H04B1/44

CPC分类号： H04L65/1069 ,  H04L65/1016 ,  H04L65/1059

摘要： For establishing a multimedia session with a remote user's terminal, a terminal starts a signaling intended to establish the multimedia session addressed to the remote user's terminal. Predetermined acknowledgement messages indicate to the terminal and to the remote terminal that the multimedia session is established. The terminal and/or the remote terminal run at least a module of a multimedia application before reception of the predetermined acknowledgement messages.

摘要翻译： 为了与远程用户的终端建立多媒体会话，终端启动用于建立寻址到远程用户终端的多媒体会话的信令。 预定确认消息向终端和远程终端指示多媒体会话建立。 在接收到预定的确认消息之前，终端和/或远程终端至少运行多媒体应用的模块。

公开(公告)号：US08077969B2

公开(公告)日：2011-12-13

申请号：US12087203

申请日：2005-12-30

申请人： Luca Rossato ,  Andrea Varesio

发明人： Luca Rossato ,  Andrea Varesio

IPC分类号： G06K9/34

CPC分类号： G06T7/155 ,  G06T7/12 ,  G06T7/194 ,  G06T2207/10016

摘要： A method of image processing includes: receiving at least one video frame of a video sequence, the at least one video frame including at least one foreground subject and a background; and processing the at least one video frame so as to separate the at least one foreground subject from the background. The processing includes: generating a pixel mask containing information indicating, for each pixel of the at least one video frame, whether the pixel belongs to the foreground subject or to the background, and determining contours of the at least one foreground subject on the pixel mask. The determining of the contours includes for each pixel in the at least one video frame; based on the information included in the pixel mask, determining whether at least one pixel border belongs to a contour of the at least one foreground subject, the at least one pixel border separating the pixel from a respective at least one adjacent pixel.

摘要翻译： 一种图像处理方法包括：接收视频序列的至少一个视频帧，所述至少一个视频帧包括至少一个前景对象和背景; 以及处理所述至少一个视频帧，以将所述至少一个前景被摄体与所述背景分离。 该处理包括：生成包含信息的像素掩码，该信息指示对于至少一个视频帧的每个像素，该像素是否属于前景对象或背景，以及确定像素掩码上的至少一个前景对象的轮廓 。 轮廓的确定包括至少一个视频帧中的每个像素; 基于包括在所述像素掩模中的信息，确定至少一个像素边界是否属于所述至少一个前景对象的轮廓，所述至少一个像素边界将所述像素与相应的至少一个相邻像素分开。

公开(公告)号：US20090028432A1

公开(公告)日：2009-01-29

申请号：US12087269

申请日：2005-12-30

申请人： Luca Rossato ,  Andrea Varesio ,  Alessandro Porta

发明人： Luca Rossato ,  Andrea Varesio ,  Alessandro Porta

IPC分类号： G06T5/00

CPC分类号： G06T7/155 ,  G06T7/12 ,  G06T7/194 ,  G06T2207/10016 ,  G06T2207/20081

摘要： A method of image processing, includes: providing a data processing apparatus, including a central processing unit and a graphics processing unit; feeding at least one video frame of a video sequence to the data processing apparatus, the at least one video frame including at least one foreground subject and a background; and processing the at least one video frame in the data processing apparatus so as to separate the at least one foreground subject from the background. The processing is at least partially performed by the processors of the graphics processing unit.

摘要翻译： 一种图像处理方法，包括：提供包括中央处理单元和图形处理单元的数据处理装置; 将至少一个视频序列的视频帧馈送到所述数据处理设备，所述至少一个视频帧包括至少一个前景主题和背景; 以及处理所述数据处理装置中的所述至少一个视频帧，以将所述至少一个前景对象与所述背景分离。 处理至少部分地由图形处理单元的处理器执行。

公开(公告)号：US09013487B2

公开(公告)日：2015-04-21

申请号：US13520140

申请日：2009-12-30

申请人： Giovanni Cordara ,  Gianluca Francini ,  Diego Gibellino ,  Andrea Varesio

发明人： Giovanni Cordara ,  Gianluca Francini ,  Diego Gibellino ,  Andrea Varesio

IPC分类号： G06T11/20

CPC分类号： G06T11/203

摘要： Method for determining the bounding box of a computerized graphic shape comprising one or more primitives described in vectorial mode, wherein the bounding box is calculated by applying analytical mathematical formulas to the vectorial description of the primitives constituting the shape without preliminarily performing a phase of drawing and displaying of the shape through resolution of the vectorial primitives that compose it.

摘要翻译： 一种用于确定包括以矢量模式描述的一个或多个原语的计算机化图形的边界框的方法，其中通过将分析数学公式应用于构成形状的图元的矢量描述而不预先执行绘制阶段来计算边界框， 通过构成它的矢量图元的分辨率来显示形状。

公开(公告)号：US20120299932A1

公开(公告)日：2012-11-29

申请号：US13520140

申请日：2009-12-30

申请人： Giovanni Cordara ,  Gianluca Francini ,  Diego Gibellino ,  Andrea Varesio

发明人： Giovanni Cordara ,  Gianluca Francini ,  Diego Gibellino ,  Andrea Varesio

IPC分类号： G06T11/20

CPC分类号： G06T11/203

摘要： Method for determining the bounding box of a computerized graphic shape comprising one or more primitives described in vectorial mode, wherein the bounding box is calculated by applying analytical mathematical formulas to the vectorial description of the primitives constituting the shape without preliminarily performing a phase of drawing and displaying of the shape through resolution of the vectorial primitives that compose it.

摘要翻译： 一种用于确定包括以矢量模式描述的一个或多个原语的计算机化图形的边界框的方法，其中通过将分析数学公式应用于构成形状的图元的矢量描述而不预先执行绘制阶段来计算边界框， 通过构成它的矢量图元的分辨率来显示形状。

公开(公告)号：US07965660B2

公开(公告)日：2011-06-21

申请号：US12448644

申请日：2006-12-29

申请人： Andrea Varesio

发明人： Andrea Varesio

IPC分类号： H04L12/16

CPC分类号： H04M3/56 ,  H04M3/562 ,  H04M3/568 ,  H04N7/157 ,  H04N21/4788

摘要： A telecommunications terminal hosts a conference mixer adapted to enable an at least audio conference between a first conference peer and at least two further conference peers. The conference mixer includes for each of the at least two further conference peers, a respective first data buffer configured to buffer portions of at least an audio data stream received from the respective conference peer; a first audio data stream portions mixer fed by the first data buffers and configured to: a) get audio data stream portions buffered in the first data buffers; b) mix the audio data stream portions from the first data buffers to produce a first mixed audio data portion; and c) feed the first mixed audio data portion to a rendering device of the telecommunications terminal, wherein the first audio data stream portions mixer is configured to perform operations a), b) and c) upon receipt of a notification from the rendering device indicating that the rendering device is ready to render a new mixed audio data portion.

摘要翻译： 电信终端承载适于在第一会议对等体和至少另外两个会议对等体之间至少进行音频会议的会议混合器。 所述会议混合器包括至少两个另外的会议对等体中的每一个，相应的第一数据缓冲器被配置为缓冲从各个会议对等体接收的至少一个音频数据流的部分; 第一音频数据流部分混合器，由第一数据缓冲器馈送并且被配置为：a）获得缓冲在第一数据缓冲器中的音频数据流部分; b）混合来自第一数据缓冲器的音频数据流部分以产生第一混合音频数据部分; 以及c）将所述第一混合音频数据部分馈送到所述电信终端的呈现设备，其中所述第一音频数据流部分混合器被配置为在接收到来自所述呈现设备的通知时执行操作a），b）和c），指示 渲染设备已准备好渲染新的混合音频数据部分。

公开(公告)号：US20090219379A1

公开(公告)日：2009-09-03

申请号：US12087265

申请日：2005-12-30

申请人： Luca Rossato ,  Andrea Varesio ,  Alessandro Porta

发明人： Luca Rossato ,  Andrea Varesio ,  Alessandro Porta

IPC分类号： H04N7/14 ,  G06K9/00

CPC分类号： H04N5/272 ,  G06T7/12 ,  G06T7/155 ,  G06T7/194 ,  G06T7/90 ,  G06T2207/10016 ,  G06T2207/20081

摘要： A method of image processing includes: providing a plurality of image frames and processing at least one image frame. A description of a plurality of pixels of the plurality of image frames is provided in a color space, including at least an angular coordinate. A method is disclosed for reliably calculating the average of the angular coordinate.

摘要翻译： 一种图像处理方法包括：提供多个图像帧并处理至少一个图像帧。 多个图像帧中的多个像素的描述被提供在至少包括角坐标的颜色空间中。 公开了一种用于可靠地计算角坐标的平均值的方法。

公开(公告)号：US20090202164A1

公开(公告)日：2009-08-13

申请号：US11918903

申请日：2005-04-19

申请人： Luca Rossato ,  Andrea Varesio

发明人： Luca Rossato ,  Andrea Varesio

IPC分类号： H04N7/50

CPC分类号： H04N19/136 ,  H04N19/103 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/196 ,  H04N19/61

摘要： A method of coding a digital image includes subdividing the image into image blocks formed by a plurality of pixels, and processing each image block of the image, by determining a skip-mode prediction block in respect of the current image block being processed, calculating a difference between the image block being processed and the skip-mode prediction block, and comparing the calculated difference to a predetermined threshold. The calculation of the difference between the current image block being processed and the skip-mode prediction block includes: calculating a plurality of pixel-by-pixel differences between a pixel of the current image block and a corresponding pixel of the skip-mode prediction image block; associating a respective quantized value with each pixel-by-pixel difference; and cumulating the quantized values.

摘要翻译： 编码数字图像的方法包括：将图像细分成由多个像素形成的图像块，并且通过对正在处理的当前图像块确定跳过模式预测块，计算图像块的图像块， 正在处理的图像块和跳过模式预测块之间的差异，并将计算出的差值与预定阈值进行比较。 正在处理的当前图像块和跳过模式预测块之间的差的计算包括：计算当前图像块的像素与跳过模式预测图像的对应像素之间的多个像素像素差异 块; 将各个量化值与每个像素/像素差值相关联; 并累积量化值。