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41. 发明申请

US20080260274A1 LOCAL IMAGE DESCRIPTORS 有权
标题翻译：本地图像描述符
公开(公告)号：US20080260274A1
公开(公告)日：2008-10-23
申请号：US11738875
申请日：2007-04-23
申请人： Simon Winder , Matthew Brown
发明人： Simon Winder , Matthew Brown
IPC分类号： G06K9/36
CPC分类号： G06K9/4671
摘要： A local image descriptor generation technique that produces a descriptor for an image patch is presented. The technique generally involves smoothing the pixels of the image patch, followed by employing a transformation to produce a transform vector for each of a set of sample points spaced across the image patch. The transform vectors are weighted and spatially accumulated to produce a prescribed number of linearly summed vectors. The linearly summed vectors are concatenated to form a raw local image descriptor, which is normalized to produce a finalized descriptor for the image patch.
摘要翻译：提出了一种产生图像补丁描述符的本地图像描述符生成技术。该技术通常涉及平滑图像块的像素，随后采用变换来产生跨越图像块的一组采样点中的每一个的变换向量。对变换矢量进行加权和空间累积，以产生规定数量的线性相加向量。线性相加矢量被连接以形成原始局部图像描述符，其被归一化以产生用于图像块的最终描述符。

42. 发明授权

US07382931B2 System and process for generating high dynamic range video 失效
标题翻译：用于生成高动态范围视频的系统和过程
公开(公告)号：US07382931B2
公开(公告)日：2008-06-03
申请号：US11036944
申请日：2005-01-14
申请人： Sing Bing Kang , Matthew Uyttendaele , Simon Winder , Richard Szeliski
发明人： Sing Bing Kang , Matthew Uyttendaele , Simon Winder , Richard Szeliski
IPC分类号： G06K9/40
CPC分类号： H04N5/2355 , G06T5/50 , H04N5/235 , H04N5/2352 , H04N5/77 , H04N5/781 , H04N5/85
摘要： A system and process for generating High Dynamic Range (HDR) video is presented which involves first capturing a video image sequence while varying the exposure so as to alternate between frames having a shorter and longer exposure. The exposure for each frame is set prior to it being captured as a function of the pixel brightness distribution in preceding frames. Next, for each frame of the video, the corresponding pixels between the frame under consideration and both preceding and subsequent frames are identified. For each corresponding pixel set, at least one pixel is identified as representing a trustworthy pixel. The pixel color information associated with the trustworthy pixels is then employed to compute a radiance value for each pixel set to form a radiance map. A tone mapping procedure can then be performed to convert the radiance map into an 8-bit representation of the HDR frame.
摘要翻译：提出了用于产生高动态范围（HDR）视频的系统和过程，其涉及首先在改变曝光的同时捕获视频图像序列，以便在具有较短和较长曝光的帧之间交替。每个帧的曝光在其被捕获之前被设置为在先前帧中的像素亮度分布的函数。接下来，对于视频的每个帧，识别所考虑的帧与前后帧之间的对应像素。对于每个对应的像素集合，至少一个像素被识别为表示可靠的像素。然后使用与可信赖像素相关联的像素颜色信息来计算每个像素组的辐射值以形成辐射图。然后可以执行色调映射过程以将辐射图转换成HDR帧的8位表示。

43. 发明授权

US07239757B2 System and process for generating high dynamic range video 有权
标题翻译：用于生成高动态范围视频的系统和过程
公开(公告)号：US07239757B2
公开(公告)日：2007-07-03
申请号：US11338910
申请日：2006-01-23
申请人： Sing Bing Kang , Matthew Uyttendaele , Simon Winder , Richard Szeliski
发明人： Sing Bing Kang , Matthew Uyttendaele , Simon Winder , Richard Szeliski
IPC分类号： G06K9/40
CPC分类号： H04N5/2355 , G06T5/50 , H04N5/235 , H04N5/2352 , H04N5/77 , H04N5/781 , H04N5/85
摘要： A system and process for generating High Dynamic Range (HDR) video is presented which involves first capturing a video image sequence while varying the exposure so as to alternate between frames having a shorter and longer exposure. The exposure for each frame is set prior to it being captured as a function of the pixel brightness distribution in preceding frames. Next, for each frame of the video, the corresponding pixels between the frame under consideration and both preceding and subsequent frames are identified. For each corresponding pixel set, at least one pixel is identified as representing a trustworthy pixel. The pixel color information associated with the trustworthy pixels is then employed to compute a radiance value for each pixel set to form a radiance map. A tone mapping procedure can then be performed to convert the radiance map into an 8-bit representation of the HDR frame.
摘要翻译：提出了用于产生高动态范围（HDR）视频的系统和过程，其涉及首先在改变曝光的同时捕获视频图像序列，以便在具有较短和较长曝光的帧之间交替。每个帧的曝光在其被捕获之前被设置为在先前帧中的像素亮度分布的函数。接下来，对于视频的每个帧，识别所考虑的帧与前后帧之间的对应像素。对于每个对应的像素集合，至少一个像素被识别为表示可靠的像素。然后使用与可信赖像素相关联的像素颜色信息来计算每个像素组的辐射值以形成辐射图。然后可以执行色调映射过程以将辐射图转换成HDR帧的8位表示。

44. 发明申请

US20060133688A1 System and process for generating high dynamic range video 有权
公开(公告)号：US20060133688A1
公开(公告)日：2006-06-22
申请号：US11338910
申请日：2006-01-23
申请人： Sing Kang , Matthew Uyttendaele , Simon Winder , Richard Szeliski
发明人： Sing Kang , Matthew Uyttendaele , Simon Winder , Richard Szeliski
IPC分类号： G06K9/40
CPC分类号： H04N5/2355 , G06T5/50 , H04N5/235 , H04N5/2352 , H04N5/77 , H04N5/781 , H04N5/85
摘要： A system and process for generating High Dynamic Range (HDR) video is presented which involves first capturing a video image sequence while varying the exposure so as to alternate between frames having a shorter and longer exposure. The exposure for each frame is set prior to it being captured as a function of the pixel brightness distribution in preceding frames. Next, for each frame of the video, the corresponding pixels between the frame under consideration and both preceding and subsequent frames are identified. For each corresponding pixel set, at least one pixel is identified as representing a trustworthy pixel. The pixel color information associated with the trustworthy pixels is then employed to compute a radiance value for each pixel set to form a radiance map. A tone mapping procedure can then be performed to convert the radiance map into an 8-bit representation of the HDR frame.

45. 发明申请

US20060031917A1 Compressing and decompressing multiple, layered, video streams employing multi-directional spatial encoding 有权
标题翻译：使用多向空间编码压缩和解压缩多个分层的视频流
公开(公告)号：US20060031917A1
公开(公告)日：2006-02-09
申请号：US11182144
申请日：2005-07-15
申请人： Simon Winder , Matthew Uyttendaele , Charles Zitnick , Richard Szeliski , Sing Kang
发明人： Simon Winder , Matthew Uyttendaele , Charles Zitnick , Richard Szeliski , Sing Kang
IPC分类号： H04N7/16 , H04B1/66 , H04N11/04 , H04N11/02 , H04N7/10 , H04N7/025 , H04N7/12
CPC分类号： H04N21/4347 , H04N13/111 , H04N19/109 , H04N19/39 , H04N19/593 , H04N19/597 , H04N19/61 , H04N19/70 , H04N19/96 , H04N21/2365
摘要： A process for compressing and decompressing non-keyframes in sequential sets of contemporaneous video frames making up multiple video streams where the video frames in a set depict substantially the same scene from different viewpoints. Each set of contemporaneous video frames has a plurality frames designated as keyframes with the remaining being non-keyframes. In one embodiment, the non-keyframes are compressed using a multi-directional spatial prediction technique. In another embodiment, the non-keyframes of each set of contemporaneous video frames are compressed using a combined chaining and spatial prediction compression technique. The spatial prediction compression technique employed can be a single direction technique where just one reference frame, and so one chain, is used to predict each non-keyframe, or it can be a multi-directional technique where two or more reference frames, and so chains, are used to predict each non-keyframe.
摘要翻译：一种用于在构成多个视频流的同步视频帧的顺序集合中压缩和解压缩非关键帧的过程，其中集合中的视频帧从不同视点描绘基本相同的场景。每组同时期的视频帧具有指定为关键帧的多个帧，其余的是非关键帧。在一个实施例中，使用多方向空间预测技术来压缩非关键帧。在另一个实施例中，使用组合链接和空间预测压缩技术来压缩每组同时期视频帧的非关键帧。所使用的空间预测压缩技术可以是单向技术，其中仅使用一个参考帧，因此使用一条链来预测每个非关键帧，或者它可以是多方向技术，其中两个或更多个参考帧等链，用于预测每个非关键帧。

46. 发明申请

US20060029134A1 System and process for compressing and decompressing multiple, layered, video streams employing spatial and temporal encoding 有权
公开(公告)号：US20060029134A1
公开(公告)日：2006-02-09
申请号：US10910077
申请日：2004-08-03
申请人： Simon Winder , Matthew Uyttendaele , Charles Zitnick , Richard Szeliski , Sing Kang
发明人： Simon Winder , Matthew Uyttendaele , Charles Zitnick , Richard Szeliski , Sing Kang
IPC分类号： H04N7/12 , H04N11/04 , H04N5/14 , H04N11/02 , H04B1/66
CPC分类号： H04N21/4347 , H04N13/111 , H04N19/109 , H04N19/39 , H04N19/593 , H04N19/597 , H04N19/61 , H04N19/70 , H04N19/96 , H04N21/2365
摘要： A system and process for compressing and decompressing multiple video streams depicting substantially the same dynamic scene from different viewpoints. Each frame in each contemporaneous set of video frames of the multiple streams is represented by at least a two layers—a main layer and a boundary layer. Compression of the main layers involves first designating one or more of these layers in each set of contemporaneous frames as keyframes. For each set of contemporaneous frames in time sequence order, the main layer of each keyframe is compressed using an inter-frame compression technique. In addition, the main layer of each non-keyframe within the frame set under consideration is compressed using a spatial prediction compression technique. Finally, the boundary layers of each frame in the current frame set are each compressed using an intra-frame compression technique. Decompression is generally the reverse of the compression process.

47. 发明申请

US20060028473A1 Real-time rendering system and process for interactive viewpoint video 有权
标题翻译：实时渲染系统和进程的交互视点视频
公开(公告)号：US20060028473A1
公开(公告)日：2006-02-09
申请号：US10910088
申请日：2004-08-03
申请人： Matthew Uyttendaele , Simon Winder , Charles Zitnick , Richard Szeliski , Sing Kang
发明人： Matthew Uyttendaele , Simon Winder , Charles Zitnick , Richard Szeliski , Sing Kang
IPC分类号： G06T15/70 , G06T13/00
CPC分类号： G06T15/205
摘要： A system and process for rendering and displaying an interactive viewpoint video is presented in which a user can watch a dynamic scene while manipulating (freezing, slowing down, or reversing) time and changing the viewpoint at will. The ability to interactively control viewpoint while watching a video is an exciting new application for image-based rendering. Because any intermediate view can be synthesized at any time, with the potential for space-time manipulation, this type of video has been dubbed interactive viewpoint video.
摘要翻译：呈现用于呈现和显示交互式视点视频的系统和过程，其中用户可以在操纵（冻结，减速或反转）时间并随意改变视点的同时观看动态场景。在观看视频时交互控制视点的能力是基于图像的渲染的令人兴奋的新应用。因为任何中间视图可以随时被合成，具有时空操纵的潜力，这种类型的视频被称为交互视点视频。

48. 发明申请

US20050285874A1 System and process for generating a two-layer, 3D representation of a scene 有权
标题翻译：用于生成场景的两层3D表示的系统和过程
公开(公告)号：US20050285874A1
公开(公告)日：2005-12-29
申请号：US10879235
申请日：2004-06-28
申请人： Charles Zitnick , Richard Szeliski , Sing Kang , Matthew Uyttendaele , Simon Winder
发明人： Charles Zitnick , Richard Szeliski , Sing Kang , Matthew Uyttendaele , Simon Winder
IPC分类号： G06T13/00 , G06T15/10 , G06T15/70 , G09G5/02
CPC分类号： G06T15/205
摘要： A system and process for generating a two-layer, 3D representation of a digital or digitized image from the image and a pixel disparity map of the image is presented. The two layer representation includes a main layer having pixels exhibiting background colors and background disparities associated with correspondingly located pixels of depth discontinuity areas in the image, as well as pixels exhibiting colors and disparities associated with correspondingly located pixels of the image not found in these depth discontinuity areas. The other layer is a boundary layer made up of pixels exhibiting foreground colors, foreground disparities and alpha values associated with the correspondingly located pixels of the depth discontinuity areas. The depth discontinuity areas correspond to prescribed sized areas surrounding depth discontinuities found in the image using a disparity map thereof.
摘要翻译：提出了一种用于从图像生成数字或数字化图像的二层3D表示和图像的像素视差图的系统和过程。两层表示包括具有显示背景颜色的像素和与图像中的深度不连续区域的相应定位的像素相关联的背景差异的主层以及与在这些深度中未找到的图像的相应定位的像素相关联的颜色和差异的像素不连续区域。另一层是由与前述深度不连续区域的对应位置的像素相关联的前景色，前景差异和α值的像素构成的边界层。深度不连续区域对应于使用其视差图在图像中发现的围绕深度不连续性的规定尺寸的区域。

49. 发明授权

US06879731B2 System and process for generating high dynamic range video 失效
标题翻译：用于生成高动态范围视频的系统和过程
公开(公告)号：US06879731B2
公开(公告)日：2005-04-12
申请号：US10425338
申请日：2003-04-29
申请人： Sing Bing Kang , Matthew T. Uyttendaele , Simon Winder , Richard Szeliski
发明人： Sing Bing Kang , Matthew T. Uyttendaele , Simon Winder , Richard Szeliski
IPC分类号： H04N5/235 , H04N5/77 , H04N5/781 , H04N5/85 , G06K9/40
CPC分类号： H04N5/2355 , G06T5/50 , H04N5/235 , H04N5/2352 , H04N5/77 , H04N5/781 , H04N5/85
摘要： A system and process for generating High Dynamic Range (HDR) video is presented which involves first capturing a video image sequence while varying the exposure so as to alternate between frames having a shorter and longer exposure. The exposure for each frame is set prior to it being captured as a function of the pixel brightness distribution in preceding frames. Next, for each frame of the video, the corresponding pixels between the frame under consideration and both preceding and subsequent frames are identified. For each corresponding pixel set, at least one pixel is identified as representing a trustworthy pixel. The pixel color information associated with the trustworthy pixels is then employed to compute a radiance value for each pixel set to form a radiance map. A tone mapping procedure can then be performed to convert the radiance map into an 8-bit representation of the HDR frame.
摘要翻译：提出了用于产生高动态范围（HDR）视频的系统和过程，其涉及首先在改变曝光的同时捕获视频图像序列，以便在具有较短和较长曝光的帧之间交替。每个帧的曝光在其被捕获之前被设置为在先前帧中的像素亮度分布的函数。接下来，对于视频的每个帧，识别所考虑的帧与前后帧之间的对应像素。对于每个对应的像素集合，至少一个像素被识别为表示可靠的像素。然后使用与可信赖像素相关联的像素颜色信息来计算每个像素组的辐射值以形成辐射图。然后可以执行色调映射过程以将辐射图转换成HDR帧的8位表示。

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