-
公开(公告)号：US20110150287A1
公开(公告)日：2011-06-23
申请号：US12640450
申请日：2009-12-17
IPC分类号： G06K9/00
CPC分类号： G06T7/246
摘要： A system and method for detecting local motion between image frames are presented. Each image frame may include a plurality of pixels. A first image frame and a second image frame may be received. Values of a first plurality of pixels at first pixel locations of the first image frame may be read. Values of a second plurality of pixels at second pixel locations of the second image frame may be read. The first pixel locations of the first image frame may correspond to the second pixel locations of the second image frame. A first delta function, based on differences between pixel values between the first and second image frames, may be calculated to produce a first output. The first output may be compared to a first one or more thresholds. It may be determined whether local motion has occurred in the second image frame based on said comparing.
摘要翻译： 提出了一种用于检测图像帧之间的局部运动的系统和方法。 每个图像帧可以包括多个像素。 可以接收第一图像帧和第二图像帧。 可以读取第一图像帧的第一像素位置处的第一多个像素的值。 可以读取第二图像帧的第二像素位置处的第二多个像素的值。 第一图像帧的第一像素位置可以对应于第二图像帧的第二像素位置。 可以计算基于第一和第二图像帧之间的像素值之间的差异的第一增量函数，以产生第一输出。 第一输出可以与第一个或多个阈值进行比较。 可以基于所述比较来确定在第二图像帧中是否发生局部运动。
-
公开(公告)号：US08437505B2
公开(公告)日：2013-05-07
申请号：US12640450
申请日：2009-12-17
IPC分类号： G06K9/00
CPC分类号： G06T7/246
摘要： A system and method for detecting local motion between image frames are presented. Each image frame may include a plurality of pixels. A first image frame and a second image frame may be received. Values of a first plurality of pixels at first pixel locations of the first image frame may be read. Values of a second plurality of pixels at second pixel locations of the second image frame may be read. The first pixel locations of the first image frame may correspond to the second pixel locations of the second image frame. A first delta function, based on differences between pixel values between the first and second image frames, may be calculated to produce a first output. The first output may be compared to a first one or more thresholds. It may be determined whether local motion has occurred in the second image frame based on said comparing.
摘要翻译： 提出了一种用于检测图像帧之间的局部运动的系统和方法。 每个图像帧可以包括多个像素。 可以接收第一图像帧和第二图像帧。 可以读取第一图像帧的第一像素位置处的第一多个像素的值。 可以读取第二图像帧的第二像素位置处的第二多个像素的值。 第一图像帧的第一像素位置可以对应于第二图像帧的第二像素位置。 可以计算基于第一和第二图像帧之间的像素值之间的差异的第一增量函数，以产生第一输出。 第一输出可以与第一个或多个阈值进行比较。 可以基于所述比较来确定在第二图像帧中是否发生局部运动。
-
公开(公告)号：US08311129B2
公开(公告)日：2012-11-13
申请号：US11611494
申请日：2006-12-15
申请人： Michael V. Jenkins
发明人： Michael V. Jenkins
IPC分类号： H04N11/04
CPC分类号： H04N7/141
摘要： In various embodiments, temporal filtering may be used to reduce noise over time in a series of video frames. A temporal filter may use previous filtered frames to reduce the noise in a current frame. For example, a temporal filter may filter noise in still parts of an image more strongly than in moving parts of the image. In some embodiments, a temporal filter requiring less processing power may include a method for detecting motion between a set of pixels and applying the temporal filter based on the detected motion. For example, if substantial motion is not detected, the temporal filter for the block of pixels may be stronger (i.e., reduce more noise) than the temporal filter applied to a block of pixels for which substantial motion has been detected.
摘要翻译： 在各种实施例中，时间滤波可用于在一系列视频帧中随时间减少噪声。 时间滤波器可以使用先前滤波的帧来减少当前帧中的噪声。 例如，时间滤波器可以比图像的运动部分更强烈地过滤图像的静止部分中的噪声。 在一些实施例中，需要较少处理能力的时间滤波器可以包括用于检测一组像素之间的运动并基于检测到的运动来应用时间滤波器的方法。 例如，如果没有检测到实质运动，则像素块的时间滤波器可以比应用于已经检测到实质运动的像素块的时间滤波器更强（即，减少更多的噪声）。
-
公开(公告)号：US07864221B2
公开(公告)日：2011-01-04
申请号：US11405354
申请日：2006-04-17
申请人： Michael V. Jenkins
发明人： Michael V. Jenkins
IPC分类号： H04N9/73
CPC分类号： H04N5/235 , H04L12/1818 , H04L43/0811 , H04N7/142 , H04N9/73
摘要： In some embodiments, images for the video conference may be white balanced. White balancing may include dividing at least a subset of an image's pixels into multiple ranges according to their luminance and chrominance values. For example, at least a portion of the pixels in an image may be sorted into different groups (i.e., by incrementing counters respective to each group) according to the luminance and chrominance values of the pixels. If enough pixels are found to be in a particular group, a portion or all of the image may be adjusted by a ratio corresponding to that particular group. For example, blue and red analog gains (corresponding to the selected pixels) may be modified by a corresponding ratio to bring red and blue accumulations closer to green accumulations.
摘要翻译： 在一些实施例中，视频会议的图像可以是白平衡的。 白平衡可以包括根据图像的亮度和色度值将图像像素的至少一个子集分成多个范围。 例如，根据像素的亮度和色度值，图像中的像素的至少一部分可以被分类成不同的组（即，通过递增对应于每个组的计数器）。 如果发现足够的像素在特定的组中，则可以通过对应于该特定组的比例来调整图像的一部分或全部。 例如，蓝色和红色模拟增益（对应于所选择的像素）可以通过相应的比率来修改，以使红色和蓝色的聚集更接近于绿色累加。
-
公开(公告)号：US07692683B2
公开(公告)日：2010-04-06
申请号：US11252238
申请日：2005-10-17
CPC分类号： H04N7/152
摘要： In various embodiments, multiple participants (at endpoints) may connect through a video conferencing system. A screen may display other participants in the conference call. For example, multiple participants may be displayed in respective portions of the screen. In some embodiments, each of the participants may use video conferencing systems that support different resolutions. In some embodiments, a transcoder may resolution transcode signals to allow the conference call participants to be displayed on each participant's respective screen at up to the highest possible resolution supported by the respective screen. For example, low resolution video conferencing systems may be displayed on a high definition screen of a high resolution system at the low resolution of the low resolution video conferencing system while another image on the same high definition screen from a different, higher resolution video conferencing system, may be displayed at the higher resolution.
摘要翻译： 在各种实施例中，多个参与者（在端点处）可以通过视频会议系统连接。 屏幕可能会显示电话会议中的其他参与者。 例如，可以在屏幕的相应部分中显示多个参与者。 在一些实施例中，每个参与者可以使用支持不同分辨率的视频会议系统。 在一些实施例中，代码转换器可以分辨率转码信号，以允许以最高可能的分辨率在各个屏幕上显示每个参与者的相应屏幕上的电话会议参与者。 例如，低分辨率视频会议系统可以以低分辨率视频会议系统的低分辨率显示在高分辨率系统的高分辨率屏幕上，而来自不同的较高分辨率视频会议系统的同一高清晰度屏幕上的另一图像 ，可能会以较高的分辨率显示。
-
公开(公告)号：US07667762B2
公开(公告)日：2010-02-23
申请号：US11461635
申请日：2006-08-01
申请人： Michael V. Jenkins
发明人： Michael V. Jenkins
CPC分类号： H04N9/045 , H04N2209/048
摘要： Various embodiments of a dual-sensor video camera are disclosed. The dual-sensor video camera includes a color filter array (CFA) sensor, which has a low-pass filter. The dual-sensor video camera also includes a panchromatic sensor. A beam splitter directs an incoming light beam to both sensors. An output image is produced based on image information from the two sensors. The output image includes luminance information based on the image information from the panchromatic sensor and chrominance information based on the image information from the CFA sensor.
摘要翻译： 公开了双传感器摄像机的各种实施例。 双传感器摄像机包括具有低通滤波器的滤色器阵列（CFA）传感器。 双传感器摄像机还包括全色传感器。 分束器将入射光束引导到两个传感器。 基于来自两个传感器的图像信息产生输出图像。 输出图像包括基于来自全色传感器的图像信息的亮度信息和基于来自CFA传感器的图像信息的色度信息。
-
公开(公告)号：US5917917A
公开(公告)日：1999-06-29
申请号：US713343
申请日：1996-09-13
CPC分类号： G10H1/0091 , G10K15/12 , G10H2210/201 , G10H2210/281 , G10H2240/056 , G10H2250/121 , G10H2250/611
摘要： A sound or music synthesizer includes a reverberation simulator having a substantially reduced volatile storage, random access memory, or buffer size in comparison to conventional reverberation simulators by decimating the sound signal prior to applying the sound signal to a reverberator and then interpolating the sound signal generated by the reverberator to restore the sample frequency. The substantial reduction in buffer size enables the usage of the reverberator in low-cost, reduced size and single-chip environments.
摘要翻译： 声音或音乐合成器包括与常规混响模拟器相比具有显着降低的易失性存储器，随机存取存储器或缓冲器大小的混响仿真器，通过在将声音信号施加到混响器之前抽取声音信号，然后内插产生的声音信号 由混响器恢复采样频率。 缓冲区大小的实质减少使得可以以低成本，减小尺寸和单芯片环境使用混响器。
-
公开(公告)号：US5644098A
公开(公告)日：1997-07-01
申请号：US497044
申请日：1995-06-30
CPC分类号： G10H1/06 , G10H1/04 , G10H1/057 , G10H7/02 , G10H2210/205 , G10H2210/211 , G10H2210/295 , G10H2230/321 , G10H2250/621 , G10H2250/631
摘要： A frequency modulation (FM) tone signal generator for generating a FM tone signal is disclosed. The tone signal generator includes a waveform generator having a plurality of wave tables, a selector and an enveloper. The waveform generator furnishes a waveform signal in response to a phase angle address signal. Each wave table stores a different waveform. The selector selects one of the wave tables in response to a plurality of selection signals such that the selected wave table largely provides the waveform signal upon being addressed largely by the phase angle address signal. Selection of the selected wave table varies with each selection signal. The enveloper impresses an envelope signal on the waveform signal. The envelope signal is used as a carrier or modulator for generating the FM tone signal.
摘要翻译： 公开了一种用于产生FM音调信号的调频（FM）音调信号发生器。 音调信号发生器包括具有多个波形表的波形发生器，选择器和启动器。 波形发生器响应于相位角地址信号提供波形信号。 每个波形表存储不同的波形。 选择器响应于多个选择信号选择一个波形表，使得所选择的波形表在被相位角地址信号大量地寻址时大大地提供波形信号。 选择的波形表的选择随每个选择信号而变化。 启动器对波形信号施加一个包络信号。 包络信号用作生成FM音调信号的载波或调制器。
-
公开(公告)号：US07545435B2
公开(公告)日：2009-06-09
申请号：US11107401
申请日：2005-04-15
CPC分类号： H04N5/235 , H04L12/1818 , H04L43/0811 , H04N7/142 , H04N9/73
摘要： In some embodiments, images for the video conference may be white balanced and/or exposure controlled. White balancing may include dividing an image's pixels into multiple ranges according to their luminance and chrominance values. In some embodiments, blue and red analog gains may be modified to bring red and blue accumulations closer to green accumulations. In some embodiments, luminance values for an image may be adjusted by increasing or decreasing exposure. The decision whether to increase or decrease the exposure may be made by looking at statistics for luminance values of skin colored regions if there are sufficient skin colored regions on the image. Otherwise, luminance values for the entire image may be analyzed to determine whether to increase or decrease exposure.
摘要翻译： 在一些实施例中，用于视频会议的图像可以是白平衡和/或曝光控制的。 白平衡可以包括根据其亮度和色度值将图像的像素划分成多个范围。 在一些实施例中，可以修改蓝色和红色模拟增益，以使红色和蓝色的聚集更接近于绿色聚集。 在一些实施例中，可以通过增加或减少曝光来调整图像的亮度值。 如果图像上有足够的肤色区域，则可以通过查看肤色区域的亮度值的统计来进行增加或减少曝光的决定。 否则，可以分析整个图像的亮度值，以确定是否增加或减少曝光。
-
公开(公告)号：US20080030611A1
公开(公告)日：2008-02-07
申请号：US11461635
申请日：2006-08-01
申请人： Michael V. Jenkins
发明人： Michael V. Jenkins
IPC分类号： H04N9/07
CPC分类号： H04N9/045 , H04N2209/048
摘要： Various embodiments of a dual-sensor video camera are disclosed. The dual-sensor video camera includes a color filter array (CFA) sensor, which has a low-pass filter. The dual-sensor video camera also includes a panchromatic sensor. A beam splitter directs an incoming light beam to both sensors. An output image is produced based on image information from the two sensors. The output image includes luminance information based on the image information from the panchromatic sensor and chrominance information based on the image information from the CFA sensor.
摘要翻译： 公开了双传感器摄像机的各种实施例。 双传感器摄像机包括具有低通滤波器的滤色器阵列（CFA）传感器。 双传感器摄像机还包括全色传感器。 分束器将入射光束引导到两个传感器。 基于来自两个传感器的图像信息产生输出图像。 输出图像包括基于来自全色传感器的图像信息的亮度信息和基于来自CFA传感器的图像信息的色度信息。
-
-
-
-
-
-
-
-
-
搜索结果
13 条记录 (耗时 0.032 秒)
