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1. 发明申请

US20150091899A1 Method and Device For Edge Shape Enforcement For Visual Enhancement of Depth Image Based Rendering of A Three-Dimensional Video Stream 审中-公开
标题翻译：用于边缘形状执行的方法和设备用于视觉增强基于深度图像的三维视频流渲染
公开(公告)号：US20150091899A1
公开(公告)日：2015-04-02
申请号：US14500768
申请日：2014-09-29
申请人： SISVEL TECHNOLOGY S.R.L.
发明人： Marco Grangetto , Maurizio Lucenteforte , Andrea Basso , Giovanni Ballocca , Muhammad Shahid Farid
IPC分类号： G06T19/20 , H04N13/00
CPC分类号： G06T19/20 , G06T5/006 , G06T2200/04 , G06T2207/10021 , G06T2207/10028 , G06T2207/20192 , G06T2219/2021 , H04N13/111 , H04N13/128 , H04N2013/0081
摘要： A method for edge correction of images of a three-dimensional video content, the video content including at least one original view image and at least one depth or disparity map, the method including the following steps: detecting edges in at least one original view image for obtaining original edges; warping the original edges according to the depth or disparity map; detecting a set of warped edges altered by the warping process; and correcting the altered edges for obtaining corrected edges.
摘要翻译：一种用于三维视频内容的图像的边缘校正的方法，所述视频内容包括至少一个原始视图图像和至少一个深度或视差图，所述方法包括以下步骤：检测至少一个原始视图图像中的边缘用于获得原始边缘; 根据深度或视差图来扭曲原边缘; 检测由翘曲过程改变的一组翘曲边缘; 并校正改变的边缘以获得校正的边缘。

2. 发明授权

US10049502B2 Method and device for edge shape enforcement for visual enhancement of depth image based rendering of a three-dimensional video stream 有权
公开(公告)号：US10049502B2
公开(公告)日：2018-08-14
申请号：US14500768
申请日：2014-09-29
申请人： SISVEL TECHNOLOGY S.R.L.
发明人： Marco Grangetto , Maurizio Lucenteforte , Andrea Basso , Giovanni Ballocca , Muhammad Shahid Farid
IPC分类号： G06T5/00 , G06T19/20 , G06T15/20 , G06T15/00 , H04N13/128 , H04N13/00
摘要： A method for edge correction of images of a three-dimensional video content, the video content including at least one original view image and at least one depth or disparity map, the method including the following steps: detecting edges in at least one original view image for obtaining original edges; warping the original edges according to the depth or disparity map; detecting a set of warped edges altered by the warping process; and correcting the altered edges for obtaining corrected edges.

3. 发明授权

US10616603B2 Methods and apparatuses for encoding and decoding digital images through superpixels 有权
公开(公告)号：US10616603B2
公开(公告)日：2020-04-07
申请号：US15762496
申请日：2016-09-23
申请人： SISVEL TECHNOLOGY S.R.L.
发明人： Giulia Fracastoro , Enrico Magli , Francesco Verdoja , Marco Grangetto
IPC分类号： G06K9/46 , H04N19/60 , H04N19/17 , G06K9/34 , G06K9/62 , H04N19/182 , G06T7/11
CPC分类号： H04N19/60 , G06K9/34 , G06K9/6224 , G06T7/11 , H04N19/17 , H04N19/182
摘要： A method and an apparatus for encoding and/or decoding digital images or video streams are provided, wherein the encoding apparatus includes a processor configured for reading at least a portion of the image, segmenting the portion of the image in order to obtain groups of pixels identified by borders information and containing at least two pixels having one or more homogeneous characteristics, computing, for each group of pixels, a weight map on the basis of the borders information associated to the group of pixels, a graph transform matrix on the basis of the weight map, and transform coefficients on the basis of the graph transform matrix (U) and of the pixels contained in the group of pixels.

4. 发明授权

US10038890B2 Method and device for generating, storing, transmitting, receiving and reproducing depth maps by using the color components of an image belonging to a three-dimensional video stream 有权
公开(公告)号：US10038890B2
公开(公告)日：2018-07-31
申请号：US14304404
申请日：2014-06-13
申请人： SISVEL TECHNOLOGY S.R.L.
发明人： Marco Grangetto , Maurizio Lucenteforte , Paolo D'Amato
IPC分类号： H04N13/00 , H04N13/139 , H04N1/32 , H04N19/597 , H04N19/63 , H04N19/80 , H04N19/59 , H04N13/161 , H04N13/15
CPC分类号： H04N13/139 , H04N1/32309 , H04N13/15 , H04N13/161 , H04N19/59 , H04N19/597 , H04N19/63 , H04N19/80
摘要： A method is described for generating a color image composed of a plurality of components (Y, U, V) by starting from at least one depth or disparity map (DM1, DM2), wherein a first set of pixels of said at least one depth or disparity map (DM1, DM2) is entered into the luminance component (Y) of said color image, and wherein a second and a third sets of pixels of said at least one depth or disparity map (DM1, DM2) are entered into the two chrominance components (U, V) of said color image.

5. 发明申请

US20140368610A1 METHOD AND DEVICE FOR GENERATING, STORING, TRANSMITTING, RECEIVING AND REPRODUCING DEPTH MAPS BY USING THE COLOR COMPONENTS OF AN IMAGE BELONGING TO A THREE-DIMENSIONAL VIDEO STREAM 审中-公开
标题翻译：通过使用相关于三维视频流的图像的颜色组件来生成，发送，传输，接收和复制深度的方法和设备
公开(公告)号：US20140368610A1
公开(公告)日：2014-12-18
申请号：US14304404
申请日：2014-06-13
申请人： SISVEL TECHNOLOGY S.R.L.
发明人： Marco Grangetto , Maurizio Lucenteforte , Paolo D'Amato
IPC分类号： H04N13/00
CPC分类号： H04N13/139 , H04N1/32309 , H04N13/15 , H04N13/161 , H04N19/59 , H04N19/597 , H04N19/63 , H04N19/80
摘要： A method is described for generating a colour image composed of a plurality of components (Y, U, V) by starting from at least one depth or disparity map (DM1, DM2), wherein a first set of pixels of said at least one depth or disparity map (DM1, DM2) is entered into the luminance component (Y) of said colour image, and wherein a second and a third sets of pixels of said at least one depth or disparity map (DM1, DM2) are entered into the two chrominance components (U, V) of said colour image.
摘要翻译：描述了一种用于通过从至少一个深度或视差图（DM1，DM2）开始来生成由多个分量（Y，U，V）组成的彩色图像的方法，其中所述至少一个深度的第一组像素或视差图（DM1，DM2）被输入到所述彩色图像的亮度分量（Y）中，并且其中将所述至少一个深度或视差图（DM1，DM2）的第二和第三组像素输入到所述彩色图像的两个色度分量（U，V）。

6. 发明授权

US11432012B2 Method and apparatus for encoding and decoding digital images or video streams 有权
公开(公告)号：US11432012B2
公开(公告)日：2022-08-30
申请号：US16488851
申请日：2018-03-02
申请人： SISVEL TECHNOLOGY S.R.L.
发明人： Marco Grangetto , Francesco Verdoja
IPC分类号： H04N19/61 , H04N19/124 , H04N19/176 , H04N19/91 , H04N19/44
摘要： A method for encoding digital images or video streams, includes a receiving phase, wherein a portion of an image is received; a graph weights prediction phase, wherein the elements of a weights matrix associated to the graph related to the blocks of the image (predicted blocks) are predicted on the basis of reconstructed, de-quantized and inverse-transformed pixel values of at least one previously coded block (predictor block) of the image, the weights matrix being a matrix comprising elements denoting the level of similarity between a pair of pixels composing said image, a graph transform computation phase, wherein the graph Fourier transform of the blocks of the image is performed, obtaining for the blocks a set of coefficients determined on the basis of the predicted weights; a coefficients quantization phase, wherein the coefficients are quantized an output phase wherein a bitstream comprising the transformed and quantized coefficients is transmitted and/or stored.

7. 发明授权

US10708601B2 Methods and apparatuses for encoding and decoding superpixel borders 有权
公开(公告)号：US10708601B2
公开(公告)日：2020-07-07
申请号：US16488879
申请日：2018-03-02
申请人： SISVEL TECHNOLOGY S.R.L.
发明人： Marco Grangetto , Francesco Verdoja
IPC分类号： H04N19/00 , H04N19/167 , H04N19/103 , H04N19/182 , G06T15/00 , G06T17/00
摘要： The present invention relates to a method for encoding the borders of pixel regions of an image, wherein the borders contain a sequence of vertices subdividing the image into regions of pixels (superpixels), by generating a sequence of symbols from an alphabet including the step of: defining for each superpixel a first vertex for coding the borders of the superpixel according to a criterion common to all superpixels; defining for each superpixel the same coding order of the border vertices, either clockwise or counter-clockwise; defining the order for coding the superpixels on the base of a common rule depending on the relative positions of the first vertices; defining a set of vertices as a known border, wherein the following steps are performed for selecting a symbol of the alphabet, for encoding the borders of the superpixels: a) determining the first vertex of the next superpixel border individuated by the common criterion; b) determining the next vertex to be encoded on the basis of the coding direction; c) selecting a first symbol (“0”) for encoding the next vertex if the next vertex of a border pertains to the known border, d) selecting a symbol (“1”; “2”) different from the first symbol (“0”) if the next vertex is not in the known border; e) repeating steps b), c), d) and e) until all vertices of the superpixel border have been encoded; f) adding each vertex of the superpixel border that was not in the known border to the set; g) determining the next superpixel whose border is to be encoded according to the common rule, if any; i) repeating steps a)-g) until the borders of all the superpixels of the image have being added to the known border.

8. 发明申请

US20180278957A1 Methods and Apparatuses for Encoding and Decoding Digital Images Through Superpixels 审中-公开
公开(公告)号：US20180278957A1
公开(公告)日：2018-09-27
申请号：US15762496
申请日：2016-09-23
申请人： SISVEL TECHNOLOGY S.R.L. , POLITECNICO DI TORINO
发明人： Giulia Fracastoro , Enrico Magli , Francesco Verdoja , Marco Grangetto
IPC分类号： H04N19/60 , H04N19/17 , G06K9/34 , G06T7/11 , H04N19/182
CPC分类号： H04N19/60 , G06K9/34 , G06K9/6224 , G06T7/11 , H04N19/17 , H04N19/182
摘要： A method and an apparatus for encoding and/or decoding digital images or video streams are provided, wherein the encoding apparatus includes a processor configured for reading at least a portion of the image, segmenting the portion of the image in order to obtain groups of pixels identified by borders information and containing at least two pixels having one or more homogeneous characteristics, computing, for each group of pixels, a weight map on the basis of the borders information associated to the group of pixels, a graph transform matrix on the basis of the weight map, and transform coefficients on the basis of the graph transform matrix (U) and of the pixels contained in the group of pixels.

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