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公开(公告)号：US08582821B1
公开(公告)日：2013-11-12
申请号：US13113989
申请日：2011-05-23
IPC分类号： G06K9/00
CPC分类号： G06T7/248 , G06T7/20 , G06T7/254 , G06T2207/10016
摘要： Systems and methods track one or more points between images. A point for tracking may be selected, at least in part, on a determination of how discriminable the point is relative to other points in a region containing the point. A point of an image being tracked may be located in another image by matching a patch containing the point with another patch of the other image. A search for a matching patch may be focused in a region that is determined based at least in part on an estimate of movement of the point between images. Points may be tracked across multiple images. If an ability to track one or more points is lost, information about the points being tracked may be used to relocate the points in another image.
摘要翻译： 系统和方法跟踪图像之间的一个或多个点。 可以至少部分地选择用于跟踪的点，以确定点相对于包含该点的区域中的其他点的可区分性。 跟踪的图像的点可以通过将包含该点的补丁与另一图像的另一个补丁相匹配来定位在另一图像中。 可以在至少部分地基于图像之间的点的移动的估计来确定的区域中聚焦对匹配补丁的搜索。 点数可以跨越多个图像进行跟踪。 如果跟踪一个或多个点的能力丢失，则关于要跟踪的点的信息可以用于重新定位另一个图像中的点。
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公开(公告)号：US08763908B1
公开(公告)日：2014-07-01
申请号：US13431864
申请日：2012-03-27
IPC分类号： G06K7/10
CPC分类号： G06K7/1443
摘要： The present technology relates to methods, systems and computer program products for detecting objects in images captured by a camera of a mobile device. The detection of objects (such as barcodes, QR codes, and text) in images can be based at least in part on image gradients of the image. The image can be divided into a plurality of regions, each having a dominant gradient direction. Based at least in part on the dominant gradient directions of the regions satisfying orientation thresholds, the regions can be identified as candidate or non-candidate regions for corresponding to a predetermined object. The candidate regions can be merged if they satisfy a connecting criterion. The merged regions can then be analyzed to determine if the merged regions satisfy a geometric property of the predetermined object, such as having a rectangular shape substantially similar to that of a barcode.
摘要翻译： 本技术涉及用于检测由移动设备的相机捕获的图像中的对象的方法，系统和计算机程序产品。 图像中对象（如条形码，QR码和文本）的检测至少部分可以基于图像的图像梯度。 图像可以被分成多个区域，每个区域具有主要梯度方向。 至少部分地基于满足定向阈值的区域的主要梯度方向，可以将区域识别为对应于预定对象的候选或非候选区域。 候选区域如果满足连接标准，则可以合并。 然后可以分析合并的区域以确定合并区域是否满足预定对象的几何属性，诸如具有与条形码基本相似的矩形形状。
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公开(公告)号：US08737737B1
公开(公告)日：2014-05-27
申请号：US13429135
申请日：2012-03-23
CPC分类号： G06K9/4642
摘要： Processes such as image matching can be improved by utilizing a Polar Accumulated Signed Gradient (PASG), a feature descriptor vector that utilizes polar coordinates. Such an approach is efficient because it avoids the costly image rotation and resampling of conventional processes. Further, the gradients can be sampled over different regions in order to achieve effective weighting without analyzing all gradients and applying a weighting factor. Such efficiencies enable image matching to be performed on devices with limited computing capacity, such as smart phones and tablet computers.
摘要翻译： 通过使用极坐标有序梯度（PASG），利用极坐标的特征描述向量，可以改善图像匹配等过程。 这种方法是有效的，因为它避免了常规工艺的昂贵的图像旋转和重采样。 此外，可以在不同区域对梯度进行采样，以便在不分析所有梯度并应用加权因子的情况下实现有效加权。 这样的效率使得能够在具有有限计算能力的设备上执行图像匹配，例如智能手机和平板计算机。
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公开(公告)号：US09547938B2
公开(公告)日：2017-01-17
申请号：US13117527
申请日：2011-05-27
申请人： Gurumurthy D. Ramkumar , William F. Stasior , Bryan E. Feldman , Arnab S. Dhua , Nalin Pradeep Senthamil
发明人： Gurumurthy D. Ramkumar , William F. Stasior , Bryan E. Feldman , Arnab S. Dhua , Nalin Pradeep Senthamil
CPC分类号： G06T19/006 , G06F3/011 , G06F3/04842 , G06F15/16 , G06F17/30047 , G06F17/30528 , G06K9/4604 , G06K9/6202 , G06Q30/0643 , G06T19/00 , G06T2210/12
摘要： Techniques for augmenting an image of an object captured and displayed in real time with associated content are disclosed. In one embodiment, the method for augmenting the image includes receiving information defining a sampled frame of a video being captured by an electronic device in substantially real time, determining information representative of an object captured in the sampled frame based on the received information, causing the determined information to match stored information defining a plurality of items to locate an item matched to the captured object, retrieving content associated with the matched item, and providing the retrieved content for display with the captured image on the electronic device. The retrieved content may be rendered in an overlay element that overlays the captured image displayed on the electronic device. The rendered content is configured to enable a user to interact with the content.
摘要翻译： 公开了用于增加用相关内容实时捕获和显示的对象的图像的技术。 在一个实施例中，用于增强图像的方法包括基本上实时地接收定义由电子设备捕获的视频的采样帧的信息，基于接收到的信息确定表示采样帧中捕获的对象的信息， 确定信息以匹配定义多个项目的存储信息，以定位与捕获对象匹配的项目，检索与匹配项目相关联的内容，以及在电子设备上提供所检索的内容以与所捕获的图像一起显示。 检索到的内容可以在覆盖显示在电子设备上的捕获图像的覆盖元素中呈现。 呈现的内容被配置为使得用户能够与内容交互。
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公开(公告)号：US20120299961A1
公开(公告)日：2012-11-29
申请号：US13117527
申请日：2011-05-27
申请人： Gurumurthy D. Ramkumar , William F. Stasior , Bryan E. Feldman , Arnab S. Dhua , Nalin Pradeep Senthamil
发明人： Gurumurthy D. Ramkumar , William F. Stasior , Bryan E. Feldman , Arnab S. Dhua , Nalin Pradeep Senthamil
IPC分类号： G09G5/00
CPC分类号： G06T19/006 , G06F3/011 , G06F3/04842 , G06F15/16 , G06F17/30047 , G06F17/30528 , G06K9/4604 , G06K9/6202 , G06Q30/0643 , G06T19/00 , G06T2210/12
摘要： Techniques for augmenting an image of an object captured and displayed in real time with associated content are disclosed. In one embodiment, the method for augmenting the image includes receiving information defining a sampled frame of a video being captured by an electronic device in substantially real time, determining information representative of an object captured in the sampled frame based on the received information, causing the determined information to match stored information defining a plurality of items to locate an item matched to the captured object, retrieving content associated with the matched item, and providing the retrieved content for display with the captured image on the electronic device. The retrieved content may be rendered in an overlay element that overlays the captured image displayed on the electronic device. The rendered content is configured to enable a user to interact with the content.
摘要翻译： 公开了用于增加用相关内容实时捕获和显示的对象的图像的技术。 在一个实施例中，用于增强图像的方法包括基本上实时地接收定义由电子设备捕获的视频的采样帧的信息，基于接收到的信息确定表示采样帧中捕获的对象的信息， 确定信息以匹配定义多个项目的存储信息，以定位与捕获对象匹配的项目，检索与匹配项目相关联的内容，以及在电子设备上提供所检索的内容以与所捕获的图像一起显示。 检索到的内容可以在覆盖显示在电子设备上的捕获图像的覆盖元素中呈现。 呈现的内容被配置为使得用户能够与内容交互。
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