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公开(公告)号：US07889949B2
公开(公告)日：2011-02-15
申请号：US11742325
申请日：2007-04-30
IPC分类号： G06K9/32
CPC分类号： G06T3/4007
摘要： A “Joint Bilateral Upsampler” uses a high-resolution input signal to guide the interpolation of a low-resolution solution set (derived from a downsampled version of the input signal) from low-to high-resolution. The resulting high-resolution solution set is then saved or applied to the original input signal to produce a high-resolution output signal. The high-resolution solution set is close to what would be produced directly from the input signal without downsampling. However, since the high-resolution solution set is constructed in part from a downsampled version of the input signal, it is computed using significantly less computational overhead and memory than a solution set computed directly from a high-resolution signal. Consequently, the Joint Bilateral Upsampler is advantageous for use in near real-time operations, in applications where user wait times are important, and in systems where computational costs and available memory are limited.
摘要翻译： “联合双边上行采样器”使用高分辨率输入信号来引导低分辨率解集（从输入信号的下采样版本导出）的内插从低到高分辨率。 然后将所得到的高分辨率解决方案集保存或应用于原始输入信号以产生高分辨率输出信号。 高分辨率解决方案集合接近于直接从输入信号产生的，而无需采样。 然而，由于高分辨率解集合部分地由输入信号的下采样版本构成，所以与直接从高分辨率信号计算的解集相比，使用显着更少的计算开销和存储器来计算。 因此，联合双边上行采样器在用户等待时间重要的应用中以及在计算成本和可用存储器受到限制的系统中有利于近实时操作。
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公开(公告)号：US20080267494A1
公开(公告)日：2008-10-30
申请号：US11742325
申请日：2007-04-30
IPC分类号： G06K9/00
CPC分类号： G06T3/4007
摘要： A “Joint Bilateral Upsampler” uses a high-resolution input signal to guide the interpolation of a low-resolution solution set (derived from a downsampled version of the input signal) from low-to high-resolution. The resulting high-resolution solution set is then saved or applied to the original input signal to produce a high-resolution output signal. The high-resolution solution set is close to what would be produced directly from the input signal without downsampling. However, since the high-resolution solution set is constructed in part from a downsampled version of the input signal, it is computed using significantly less computational overhead and memory than a solution set computed directly from a high-resolution signal. Consequently, the Joint Bilateral Upsampler is advantageous for use in near real-time operations, in applications where user wait times are important, and in systems where computational costs and available memory are limited.
摘要翻译： “联合双边上行采样器”使用高分辨率输入信号来引导低分辨率解集（从输入信号的下采样版本导出）的内插从低到高分辨率。 然后将所得到的高分辨率解决方案集保存或应用于原始输入信号以产生高分辨率输出信号。 高分辨率解决方案集合接近于直接从输入信号产生的，而无需采样。 然而，由于高分辨率解集合部分地由输入信号的下采样版本构成，所以与直接从高分辨率信号计算的解集相比，使用显着更少的计算开销和存储器来计算。 因此，联合双边上行采样器在用户等待时间重要的应用中以及在计算成本和可用存储器受到限制的系统中有利于近实时操作。
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公开(公告)号：US20080144968A1
公开(公告)日：2008-06-19
申请号：US11738903
申请日：2007-04-23
IPC分类号： G06K9/36
CPC分类号： G06T3/0018
摘要： A dynamic wide angle image viewing technique is presented which provides a way to view a wide-angle image while zooming between a wide angle view and a narrower angle view that employs both perspective and non-perspective projection models. In general, this involves first establishing the field of view for a view of the wide angle image that is to be displayed. The view is then rendered and displayed based on the established field of view, such that the projection transitions between a perspective projection associated with narrower angle views and a non-perspective projection (e.g., cylindrical, spherical or some other parameterization) associated with wider-angle views.
摘要翻译： 提出了一种动态广角图像观看技术，其提供了在广角视角和使用透视投影模型和非透视投影模型的较窄角度视图之间进行放大时观察广角图像的方式。 通常，这涉及首先建立要显示的广角图像的视图。 然后基于所建立的视野来呈现和显示视图，使得投影在与较窄角度视图相关联的透视投影与与更宽角度视图相关联的非透视投影（例如，圆柱形，球形或某些其它参数化） 角度视图。
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公开(公告)号：US20090041375A1
公开(公告)日：2009-02-12
申请号：US11834238
申请日：2007-08-06
IPC分类号： G06K9/40
CPC分类号： G06T5/007 , G06T5/40 , G06T2207/20208
摘要： A dynamic tone mapping technique is presented that produces a local tone map for a sub-image of a wide-angle, high dynamic range (HDR), which is used in rendering the sub-image for display. The technique generally involves first computing a global tone map of the wide-angle, HDR image in advance of rendering the sub-image. The global tone map is then used during rendering to compute a local tone map based on the average luminance and contrast of the pixels of the sub-image. In addition, the sub-image can be tone mapped as part of the rendering of a sequence of sub-images during a viewer-executed panning and/or zooming session. In this case, the local tone maps can be kept from changing too rapidly by adding a hysteresis feature to smooth out the intensity changes between successive sub-images.
摘要翻译： 提出了一种动态色调映射技术，它为广角，高动态范围（HDR）的子图像产生局部色调图，用于渲染子图像进行显示。 该技术通常涉及首先在渲染子图像之前计算广角HDR图像的全局色调图。 然后在渲染期间使用全局色调图，以基于子图像的像素的平均亮度和对比度来计算局部色调图。 此外，子图像可以在观看者执行的平移和/或缩放会话期间作为一系列子图像的呈现的一部分进行色调映射。 在这种情况下，通过添加滞后特征来平滑连续子图像之间的强度变化，可以保持局部色调图不会太快地改变。
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公开(公告)号：US08194102B2
公开(公告)日：2012-06-05
申请号：US12245771
申请日：2008-10-06
申请人： Michael Cohen , Qing Luan , Steven Drucker , Johannes Kopf , Ying-Qing Xu , Matthew T. Uyttendaele
发明人： Michael Cohen , Qing Luan , Steven Drucker , Johannes Kopf , Ying-Qing Xu , Matthew T. Uyttendaele
CPC分类号： G06T3/40
摘要： Techniques are described for rendering annotations associated with an image. A view of an image maybe shown on a display, and different portions of the image are displayed and undisplayed in the view according to panning and/or zooming of the image within the view. The image may have annotations. An annotation may have a location in the image and may have associated renderable media. The location of the annotation relative to the view may change according to the panning and/or zooming. A strength of the annotation may be computed, the strength changing based the panning and/or zooming of the image. The media may be rendered according to the strength. Whether to render the media may be determined by comparing the strength to a threshold.
摘要翻译： 描述了用于渲染与图像相关联的注释的技术。 可以在显示器上显示图像的视图，并且根据视图内的图像的平移和/或缩放来在视图中显示和不显示图像的不同部分。 图像可能有注释。 注释可以在图像中具有位置并且可以具有相关联的可渲染媒体。 注释相对于视图的位置可能会根据平移和/或缩放而改变。 可以计算注释的强度，根据图像的平移和/或缩放来改变强度。 媒体可以根据实力渲染。 可以通过将强度与阈值进行比较来确定是否呈现媒体。
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公开(公告)号：US20100085383A1
公开(公告)日：2010-04-08
申请号：US12245771
申请日：2008-10-06
申请人： Michael Cohen , Qing Luan , Steven Drucker , Johannes Kopf , Ying-Qing Xu , Matthew T. Uyttendaele
发明人： Michael Cohen , Qing Luan , Steven Drucker , Johannes Kopf , Ying-Qing Xu , Matthew T. Uyttendaele
IPC分类号： G09G5/00
CPC分类号： G06T3/40
摘要： Techniques are described for rendering annotations associated with an image. A view of an image maybe shown on a display, and different portions of the image are displayed and undisplayed in the view according to panning and/or zooming of the image within the view. The image may have annotations. An annotation may have a location in the image and may have associated renderable media. The location of the annotation relative to the view may change according to the panning and/or zooming. A strength of the annotation may be computed, the strength changing based the panning and/or zooming of the image. The media may be rendered according to the strength. Whether to render the media may be determined by comparing the strength to a threshold.
摘要翻译： 描述了用于渲染与图像相关联的注释的技术。 可以在显示器上显示图像的视图，并且根据视图内的图像的平移和/或缩放来在视图中显示和不显示图像的不同部分。 图像可能有注释。 注释可以在图像中具有位置并且可以具有相关联的可渲染媒体。 注释相对于视图的位置可能会根据平移和/或缩放而改变。 可以计算注释的强度，根据图像的平移和/或缩放来改变强度。 媒体可以根据实力渲染。 可以通过将强度与阈值进行比较来确定是否呈现媒体。
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公开(公告)号：US20090022421A1
公开(公告)日：2009-01-22
申请号：US11779871
申请日：2007-07-18
IPC分类号： G06K9/36
CPC分类号： G06T3/4038
摘要： A gigapixel image is generated from a set of images in raw format depicting different portions of a panoramic scene that has up to a full spherical field of view. Radiometric alignment of the images creates a set of images in radiance format. Geometric alignment of the radiance format images creates a set of true poses for the images in radiance format. A gigapixel image depicting the entire scene is assembled from the set of radiance format images and radiance format true poses for the images. The set of images in raw format is captured using a conventional digital camera, equipped with a telephoto lens, attached to a motorized head. The head is programmed to pan and tilt the camera in prescribed increments to individually capture the images at a plurality of exposures and with a prescribed overlap between images depicting adjacent portions of the scene.
摘要翻译： 从原始格式的一组图像生成一个千兆像素图，描绘具有全球面视野的全景场景的不同部分。 图像的放射线对准会以辐射格式创建一组图像。 辐射格式图像的几何对齐为辐射格式的图像创建一组真实姿势。 描绘整个场景的百万像素图像是由一组辐射格式图像和辐射格式组合而成的图像的真实姿势。 原始格式的图像集是使用配有远摄镜头的常规数码相机来捕捉的，该长焦镜头连接到电动头部。 头被编程为以规定的增量平移和倾斜照相机，以单独地以多次曝光并且以描绘场景的相邻部分的图像之间的规定的重叠来捕获图像。
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公开(公告)号：US07868786B2
公开(公告)日：2011-01-11
申请号：US10968861
申请日：2004-10-19
申请人： Kentaro Toyama , Ramaswamy Hariharan , Ross G. Cutler , John R. Douceur , Nuria M. Oliver , Eric K. Ringger , Daniel C. Robbins , Matthew T. Uyttendaele
发明人： Kentaro Toyama , Ramaswamy Hariharan , Ross G. Cutler , John R. Douceur , Nuria M. Oliver , Eric K. Ringger , Daniel C. Robbins , Matthew T. Uyttendaele
IPC分类号： G08G1/123
CPC分类号： G06Q30/02
摘要： A location history is a collection of locations over time for an object. A stay is a single instance of an object spending some time in one place, and a destination is any place where one or more objects have experienced a stay. Location histories are parsed using stays and destinations. In a described implementation, each location of a location history is recorded as a spatial position and a corresponding time at which the spatial position is acquired. Stays are extracted from a location history by analyzing locations thereof with regard to a temporal threshold and a spatial threshold. Specifically, two or more locations are considered a stay if they exceed a minimum stay duration and are within a maximum roaming distance. Each stay includes a location, a starting time, and an ending time. Destinations are produced from the extracted stays using a clustering operation and a predetermined scaling factor.
摘要翻译： 位置历史记录是对象的一段时间内的位置集合。 逗留是在一个地方花费一些时间的对象的单个实例，目的地是一个或多个对象经历了逗留的任何地方。 使用停留和目的地解析位置历史记录。 在描述的实现中，将位置历史的每个位置记录为空间位置和获取空间位置的对应时间。 通过相对于时间阈值和空间阈值分析其位置，从位置历史中提取静止。 具体来说，如果两个或多个位置超过最小停留持续时间并处于最大漫游距离内，则将其视为停留。 每个住宿包括一个位置，一个起始时间和一个结束时间。 使用聚类操作和预定缩放因子从所提取的逗留中产生目的地。
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公开(公告)号：US20080120560A1
公开(公告)日：2008-05-22
申请号：US11561407
申请日：2006-11-19
IPC分类号： G06F3/048
CPC分类号： G06T11/60
摘要： A technique for image compositing which allows a user to select the best image of an object, such as for example a person, from a set of images interactively and see how it will be assembled into a final photomontage. A user can select a source image from the set of images as an initial composite image. A region, representing a set of pixels to be replaced, is chosen by the user in the composite image. A corresponding same region is reflected in one or more source images, one of which will be selected by the user for painting into the composite image. The technique optimizes the selection of pixels around the user-chosen region or regions for cut points that will be least likely to show seams where the source images are merged in the composite image.
摘要翻译： 一种用于图像合成的技术，其允许用户以交互方式从一组图像中选择对象（例如，人）的最佳图像，并且看到它将如何组装成最终的照片蒙版。 用户可以从图像集中选择源图像作为初始合成图像。 表示要替换的像素集合的区域由用户在合成图像中选择。 相应的相同区域被反映在一个或多个源图像中，其中一个源图像将由用户选择以绘制到合成图像中。 该技术优化了围绕用户选择的区域或区域的像素的选择，用于切割点，其将最不可能显示在合成图像中合并源图像的接缝。
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公开(公告)号：US06879731B2
公开(公告)日：2005-04-12
申请号：US10425338
申请日：2003-04-29
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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