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公开(公告)号：US20130002865A1
公开(公告)日：2013-01-03
申请号：US13534842
申请日：2012-06-27
CPC分类号： G06K9/3241 , G06T7/254 , G06T2207/20081 , H04N19/107 , H04N19/176 , H04N19/23
摘要： A method and system for updating a visual element model of a scene model associated with a scene, the visual element model including a set of mode models for a visual element for a location of the scene. The method receives an incoming visual element of a frame of the image sequence and, for each mode model, classifies the respective mode model as either a matching mode model or a distant mode model, by comparing an appearance of the incoming visual element and a set of visual characteristics of the respective mode model. The method removes a distant mode model from the visual element model, based upon a first temporal characteristic of a matching mode model exceeding a maturity threshold and a second temporal characteristic of the distant mode model being below a stability threshold.
摘要翻译： 一种用于更新与场景相关联的场景模型的视觉元素模型的方法和系统，所述视觉元素模型包括用于场景位置的视觉元素的一组模式模型。 该方法接收图像序列的帧的传入视觉元素，并且对于每个模式模型，通过比较传入的可视元素和集合的外观将相应的模式模型分类为匹配模式模型或远程模式模型 的模式模型的视觉特征。 该方法基于超过成熟阈值的匹配模式模型的第一时间特征和远程模式模型的第二时间特征低于稳定性阈值，从视觉元素模型中去除远模式模型。
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公开(公告)号：US20120274776A1
公开(公告)日：2012-11-01
申请号：US13455714
申请日：2012-04-25
CPC分类号： H04N7/181 , G06T7/344 , G06T2207/10016 , G06T2207/20004 , G06T2207/20021 , G06T2207/30232 , G08B13/19641 , G08B29/046 , H04N7/185
摘要： Disclosed herein are a system and method for detecting tampering of a first camera in a camera network system, wherein the first camera is adapted to capture a portion of a scene in a field of view of the first camera. The method detects an occlusion of the scene in the field of view of the first camera and changes a field of view of a second camera to overlap with the field of view of the first camera. The method determines a difference between an image captured by the second camera of the changed field of view and a set of reference images relating to the field of view of the first camera. The method then detects tampering of the first camera based on the difference exceeding a predefined threshold.
摘要翻译： 本文公开了一种用于检测相机网络系统中的第一相机的篡改的系统和方法，其中第一相机适于捕获第一相机的视野中的场景的一部分。 该方法检测在第一相机的视野中的场景的遮挡，并且改变第二相机的视野以与第一相机的视野重叠。 该方法确定由改变的视场的第二摄像机拍摄的图像与与第一相机的视野相关的一组参考图像之间的差异。 该方法然后基于超过预定阈值的差异来检测第一相机的篡改。
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公开(公告)号：US20120106856A1
公开(公告)日：2012-05-03
申请号：US13277964
申请日：2011-10-20
申请人： Amit Kumar Gupta , Ashley Partis , Xin Yu Liu
发明人： Amit Kumar Gupta , Ashley Partis , Xin Yu Liu
IPC分类号： G06K9/62
CPC分类号： G06K9/38 , G06K9/00771 , G06T7/194
摘要： A system and method for performing foreground/background separation on an input image. The method identifies a corresponding model visual element in a scene model associated with the input image, the model visual element being associated with a set of element models, each element model including a plurality of visual data sets. Select an element model from the set of element models, dependent upon a visual distance between the input visual element and a visual data set of the selected element model satisfying a predetermined criterion. The method classifies the input visual element as one of foreground and background, dependent upon the selected element model, and then updates each visual data set in the selected element model, dependent upon the input visual element and at least first and second different methods of updating a visual data set.
摘要翻译： 用于在输入图像上执行前景/背景分离的系统和方法。 该方法识别与输入图像相关联的场景模型中的对应模型视觉元素，模型视觉元素与一组元素模型相关联，每个元素模型包括多个视觉数据集。 从元素模型集合中选择元素模型，这取决于输入视觉元素与满足预定标准的所选元素模型的视觉数据集之间的视觉距离。 该方法将输入的可视元素分类为前景和背景之一，这取决于所选择的元素模型，然后根据输入的视觉元素和至少第一和第二不同的更新方法更新所选元素模型中的每个视觉数据集。 一个视觉数据集。
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公开(公告)号：US20120106837A1
公开(公告)日：2012-05-03
申请号：US13281113
申请日：2011-10-25
CPC分类号： G06K9/3241 , G06T7/11 , G06T7/194
摘要： Disclosed herein are a system and method for performing foreground/background separation on an input image. The method pre-classifies (1010, 1020) an input visual element in the input image as one of a first element type and a second element type, dependent upon a predetermined characteristic. The method performs a first foreground/background separation (1030) on the input visual element that has been pre-classified as the first element type, wherein the first foreground/background separation step is based on colour data and brightness data of the input visual element. The method performs a second foreground/background separation (1040) on the input visual element that has been pre-classified as the second element type, wherein the second foreground/background separation step is based on colour data, brightness data, and texture of the input visual element.
摘要翻译： 这里公开了用于在输入图像上执行前景/背景分离的系统和方法。 该方法根据预定特性，将输入图像中的输入视觉元素（1010,1020）预分类为第一元素类型和第二元素类型之一。 该方法对已被预先分类为第一元素类型的输入视觉元素执行第一前景/背景分离（1030），其中第一前景/背景分离步骤基于输入视觉元素的颜色数据和亮度数据 。 该方法对已被预先分类为第二元素类型的输入视觉元素执行第二前景/背景分离（1040），其中第二前景/背景分离步骤基于颜色数据，亮度数据和纹理 输入视觉元素。
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55.发明申请Delta-Sigma Analog-to-Digital Converters and Methods to Calibrate Delta-Sigma Analog-to-Digital Converters 审中-公开Delta-Sigma模数转换器和校准Delta-Sigma模数转换器的方法公开(公告)号：US20100073207A1
公开(公告)日：2010-03-25
申请号：US12235348
申请日：2008-09-22
摘要： Delta-sigma analog-to-digital converters (ADCs) and methods to calibrate methods to delta-sigma ADCs are disclosed. In one particular example, a delta-sigma ADC is described, including an n-bit feedback digital-to-analog converter (DAC) having a number of unit elements, and is configured to provide a feedback signal to a summing device, which generates a difference signal based on an analog input signal and the feedback signal. An n-bit ADC is included to generate an n-bit digital signal based on the difference signal. A dynamic element matching device selects one or more unit elements in the DAC based on the n-bit digital signal. A storage device, such as a memory, stores error coefficients corresponding to the plurality of unit elements. Finally, a digital corrector is included to receive the selection of unit elements, receive error coefficients corresponding to the selected unit elements, and adjust the n-bit digital signal based on the received error coefficients.
摘要翻译： 公开了Delta-sigma模数转换器（ADC）以及校准Δ-ΣADC的方法的方法。 在一个特定示例中，描述了Δ-ΣADC，其包括具有多个单位元件的n位反馈数模转换器（DAC），并且被配置为向求和设备提供反馈信号，其产生 基于模拟输入信号和反馈信号的差分信号。 包括n位ADC以根据差信号产生n位数字信号。 动态元件匹配装置基于n位数字信号选择DAC中的一个或多个单元元件。 诸如存储器的存储装置存储对应于多个单位元件的误差系数。 最后，包括数字校正器以接收单元元素的选择，接收与所选择的单元元素对应的误差系数，并且基于接收到的误差系数来调整n位数字信号。
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公开(公告)号：US07420490B2
公开(公告)日：2008-09-02
申请号：US11461060
申请日：2006-07-31
IPC分类号： H03M1/00
CPC分类号： G11C27/026
摘要： The invention provides methods and systems useful for quickly and accurately sampling a switched capacitive load. Systems are disclosed in which the methods are implemented using an operational amplifier operably coupled to a pre-charge capacitor for storing an input charge. A sampling capacitor is also coupled to the operational amplifier and to the pre-charge capacitor for receiving and holding the input charge. The system is so configured for a coarse sampling phase and a fine sampling phase the to ensure that the sampling capacitor settles quickly to provides an output.
摘要翻译： 本发明提供了用于快速和准确地对开关电容性负载进行采样的方法和系统。 公开了系统，其中使用可操作地耦合到用于存储输入电荷的预充电电容器的运算放大器来实现所述方法。 采样电容器还耦合到运算放大器和用于接收和保持输入电荷的预充电电容器。 该系统被配置为用于粗抽样相位和精细采样相位，以确保采样电容器快速稳定以提供输出。
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公开(公告)号：US20070188231A1
公开(公告)日：2007-08-16
申请号：US11461758
申请日：2006-08-01
IPC分类号： H03F3/45
CPC分类号： H03F3/45192 , H03F3/45654 , H03F3/45659 , H03F2203/45126 , H03F2203/45268 , H03F2203/45311 , H03F2203/45354 , H03F2203/45418 , H03F2203/45424 , H03F2203/45681 , H03F2203/45692
摘要： The invention includes methods and systems for providing a multi-path common mode feedback loop in an amplifier system. Embodiments include techniques for dividing a common mode feedback current path to provide a slow common mode feedback current path and a fast common mode feedback current path. The slow and fast paths are configured for controlling common mode feedback current within a small bandwidth.
摘要翻译： 本发明包括用于在放大器系统中提供多路共模反馈回路的方法和系统。 实施例包括用于分割共模反馈电流路径以提供慢速共模反馈电流路径和快速共模反馈电流路径的技术。 慢速和快速路径被配置为在小带宽内控制共模反馈电流。
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