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1. 发明授权

US09749594B2 Transformation between image and map coordinates 有权
公开(公告)号：US09749594B2
公开(公告)日：2017-08-29
申请号：US13335442
申请日：2011-12-22
申请人： Chien-Min Huang , Wei Su , Frank Vaughn
发明人： Chien-Min Huang , Wei Su , Frank Vaughn
IPC分类号： G06T7/73 , H04N7/18 , G06K9/00
CPC分类号： H04N7/181 , G06K9/00771 , G06T7/73 , G06T2207/10016 , G06T2207/20101 , G06T2207/30232
摘要： Systems and methods for transformations between image and map coordinates, such as those associated with a video surveillance system, are described herein. An example of a method described herein includes selecting a reference point within the image with known image coordinates and map coordinates, computing at least one transformation parameter with respect to a location and a height of the camera and the reference point, detecting a target location to be tracked within the image, determining image coordinates of the target location, and computing map coordinates of the target location based on the image coordinates of the target location and the at least one transformation parameter.

2. 发明授权

US09497388B2 Zooming factor computation 有权
标题翻译：缩放因子计算
公开(公告)号：US09497388B2
公开(公告)日：2016-11-15
申请号：US12971561
申请日：2010-12-17
申请人： Chien-Min Huang
发明人： Chien-Min Huang
IPC分类号： H04N5/247 , H04N5/232 , G08B13/196
CPC分类号： H04N5/247 , G08B13/19608 , G08B13/1963 , G08B13/19641 , G08B13/19643 , H04N5/232 , H04N5/23296
摘要： Systems, methods, and devices are disclosed for determining a zooming factor for a camera in a pan, tilt, and zoom (PTZ) camera tracking system to enable a camera to keep an object at a constant size within the camera's viewing area, despite changes in the object's distance from the camera. This provides a complement to a camera's pan and tilt tracking of the moving object. For example, a PTZ camera tracking system that determines an object to track, utilizes information regarding images of the object of interest are used to determine a zooming factor (or other zooming value) for a camera in the PTZ camera tracking system. This information includes variables such as tilt angles of one or more cameras and a reference zooming factor.
摘要翻译：公开了用于确定平移，倾斜和变焦（PTZ）相机跟踪系统中的相机的缩放因子的系统，方法和装置，以使得相机能够在相机的观看区域内将对象保持在恒定大小，尽管改变在物体距离相机的距离。这为摄像机对移动物体的摇摄和倾斜跟踪提供了补充。例如，使用PTZ摄像机跟踪系统，其确定要跟踪的对象，利用关于感兴趣对象的图像的信息来确定PTZ摄像机跟踪系统中的相机的缩放因子（或其他缩放值）。该信息包括诸如一个或多个相机的倾斜角度和参考缩放因子的变量。

3. 发明授权

US08269844B2 Method of improving video images by removing the effects of camera vibration 有权
标题翻译：通过消除摄像机振动的影响来改善视频图像的方法
公开(公告)号：US08269844B2
公开(公告)日：2012-09-18
申请号：US12527619
申请日：2008-03-26
申请人： Chien-Min Huang , Farzin Aghdasi
发明人： Chien-Min Huang , Farzin Aghdasi
IPC分类号： H04N5/228 , H04N7/18
CPC分类号： H04N5/23248 , G06T5/003 , G06T2207/10016 , G06T2207/20201 , G06T2207/30232
摘要： A method of improving a video image by removing the effects of camera vibration comprising the steps of, obtaining a reference frame, receiving an incoming frame, determining the frame translation vector for the incoming frame, translating the incoming frame to generate a realigned frame, performing low pass filtering in the spatial domain on pixels in the realigned frame, performing low pass filtering in the spatial domain on pixels in the reference frame, determining the absolute difference between the filtered pixels in the reference frame and the filtered pixels in the realigned frame, performing low pass filtering in the temporal domain on the pixels in the realigned frame to generate the output frame if the absolute difference is less than a predetermined threshold, and providing the realigned frame as the output frame if the absolute difference is greater than the predetermined threshold.
摘要翻译：通过消除摄像机振动的影响来改善视频图像的方法包括以下步骤：获得参考帧，接收输入帧，确定输入帧的帧转换向量，翻译输入帧以产生重新排列的帧，执行在重新排列的帧中的像素上的空间域中进行低通滤波，对参考帧中的像素执行空间域中的低通滤波，确定参考帧中的滤波像素与重新排列的帧中的滤波像素之间的绝对差，在所述重新排列的帧中的所述像素上执行所述时域上的低通滤波以在所述绝对差小于预定阈值时产生所述输出帧，并且如果所述绝对差大于所述预定阈值，则将所述重新排列的帧提供为所述输出帧。

4. 发明授权

US07933333B2 Method and apparatus for detecting motion in MPEG video streams 有权
标题翻译：用于检测MPEG视频流中的运动的方法和装置
公开(公告)号：US07933333B2
公开(公告)日：2011-04-26
申请号：US11172403
申请日：2005-06-30
申请人： Chien-Min Huang , Farzin Aghdasi
发明人： Chien-Min Huang , Farzin Aghdasi
IPC分类号： H04N7/12 , G06K9/00
CPC分类号： H04N19/51 , G06K9/00771 , G11B27/3027
摘要： A method of detecting motion in a video image comprising the steps of connecting an MPEG compliant encoder to a video source that provides video images, compressing the video data in the video images and generating a compressed video image bit stream having a motion compensation component, receiving the generated compressed video image bit stream, comparing the motion compensation component to a threshold value, and indicating that motion has occurred if the motion compensation component is greater than the threshold value.
摘要翻译：一种检测视频图像中的运动的方法，包括以下步骤：将MPEG兼容编码器连接到提供视频图像的视频源，压缩视频图像中的视频数据并产生具有运动补偿分量的压缩视频图像比特流，接收生成的压缩视频图像比特流，将运动补偿分量与阈值进行比较，并且如果运动补偿分量大于阈值，则指示运动已经发生。

5. 发明授权

US5909513A Bit allocation for sequence image compression 失效
标题翻译：序列图像压缩的位分配
公开(公告)号：US5909513A
公开(公告)日：1999-06-01
申请号：US713400
申请日：1996-09-13
申请人： Kyminh Liang , Chien-Min Huang , Paul D. Israelsen , Scott E. Budge
发明人： Kyminh Liang , Chien-Min Huang , Paul D. Israelsen , Scott E. Budge
IPC分类号： H04N11/04 , G06T1/20 , G06T9/00 , H03M7/30 , H04N7/14 , H04N7/26 , H04N7/28 , H04N7/30 , H04N7/50 , G06K9/36
CPC分类号： G06T9/008 , H03M7/3082 , H04N19/107 , H04N19/147 , H04N19/172 , H04N19/176 , H04N19/19 , H04N19/23 , H04N19/40 , H04N19/587 , H04N19/61 , H04N19/94 , H04N11/042 , H04N19/146 , H04N19/152 , H04N19/30 , H04N19/39 , H04N7/147
摘要： The invention relates to a method and system for allocating bits for representing blocks that are transmitted in an image compression system. In a preferred embodiment, a video telephone communications system includes a video transmitting/receiving (transceiving) system including local and remote processing systems separated by a communications link. The local processing system determines indices to be sent to a remote processing system to represent the image. Under one aspect of the invention, the local processing system determines an optimal bit allocation in which the following relationship may be minimized DR=D+.lambda.R, where D is the total distortion .SIGMA.d.sub.i for a frame; .lambda. is a value determined as described below; R=.SIGMA.r.sub.i .apprxeq.R.sub.d which is the desired total number of bits for the frame. The optimal bit allocation may determine .lambda. for an entire frame. Under other aspects of the invention a lambda feedback technique, with or without predecision, may be used. The lambda feedback techniques may determine .lambda. block by block. Conditional update preselection and mode preselection are other reduced complexity procedures.
摘要翻译：本发明涉及一种用于分配用于表示在图像压缩系统中发送的块的比特的方法和系统。在优选实施例中，视频电话通信系统包括视频发送/接收（收发）系统，该系统包括由通信链路隔开的本地和远程处理系统。本地处理系统确定要发送到远程处理系统以表示图像的索引。在本发明的一个方面，本地处理系统确定最佳比特分配，其中以下关系可以被最小化DR = D + lambda R，其中D是帧的总失真SIGMA di; λ是如下所述确定的值; R = SIGMA ri APPROX Rd，它是帧的所需总位数。最佳比特分配可以确定整个帧的λ。在本发明的其他方面，可以使用具有或不具有预先确定的λ反馈技术。 λ反馈技术可以逐块确定λ块。条件更新预选和模式预选是其他简化复杂程序。

6. 发明申请

US20060210175A1 Method and apparatus for detecting motion in MPEG video streams 有权
标题翻译：用于检测MPEG视频流中的运动的方法和装置
公开(公告)号：US20060210175A1
公开(公告)日：2006-09-21
申请号：US11172403
申请日：2005-06-30
申请人： Chien-Min Huang , Farzin Aghdasi
发明人： Chien-Min Huang , Farzin Aghdasi
IPC分类号： G06K9/36
CPC分类号： H04N19/51 , G06K9/00771 , G11B27/3027
摘要： A method of detecting motion in a video image comprising the steps of connecting an MPEG compliant encoder to a video source that provides video images, compressing the video data in the video images and generating a compressed video image bit stream having a motion compensation component, receiving the generated compressed video image bit stream, comparing the motion compensation component to a threshold value, and indicating that motion has occurred if the motion compensation component is greater than the threshold value.
摘要翻译：一种检测视频图像中的运动的方法，包括以下步骤：将MPEG兼容编码器连接到提供视频图像的视频源，压缩视频图像中的视频数据并产生具有运动补偿分量的压缩视频图像比特流，接收生成的压缩视频图像比特流，将运动补偿分量与阈值进行比较，并且如果运动补偿分量大于阈值，则指示运动已经发生。

7. 发明授权

US5541594A Fixed quality source coder with fixed threshold 失效
标题翻译：固定质量源编码器具有固定阈值
公开(公告)号：US5541594A
公开(公告)日：1996-07-30
申请号：US274622
申请日：1994-07-13
申请人： Chien-Min Huang , Richard W. Harris , Paul D. Israelsen
发明人： Chien-Min Huang , Richard W. Harris , Paul D. Israelsen
IPC分类号： G06T9/00 , H03M7/30 , H04N7/26 , H04N7/28 , H04N7/30
CPC分类号： H03M7/3082 , G06T9/008 , H04N19/126 , H04N19/154 , H04N19/162 , H04N19/94 , H04N19/124 , H04N19/30 , H04N19/60
摘要： A fixed quality source coder receives and performs VQ on an input signal I.sub.D. The signal I.sub.D may be characterized by the number of samples/frame and bits per sample, and may be provided by a traditional source coder. The traditional source coder may include a sample-and-hold (S/H) circuit producing rxs samples/frame and an ADC providing n bits per pixel. In a first embodiment, the number of bits/sample is increased. In the second embodiment, the number of samples/frame is increased. In a third embodiment, both the number of bits/sample and the number of samples/frame are increased. Measurements made in simulations involving the first and second embodiments show that the fixed quality source coder has a smaller data rate, mean absolute error (MAE) and root mean square error (RMSE) than that of the traditional source coder, while maintaining the same or less maximum error. The fixed quality source coder includes an encoder and may also include a decoder. The encoder may include a lossy codec that receives and encodes the signal I.sub.D to provide encoded information to a multiplexer regarding the signal I.sub.D. The lossy codec also decodes the encoded signal to produce a decoded signal I.sub.VQ.sup.-1. A summer receives I.sub.D and I.sub.VQ.sup.-1 and determines an error signal E.sub.R, where E.sub.R may equal I.sub.D -I.sub.VQ.sup.-1. A threshold circuit receives the signal E.sub.R and passes a threshold signal E.sub.T, where a threshold level T may be set to ensure that the maximum error allowed in the encoder is equal to a particular desired maximum error.
摘要翻译：固定质量源编码器在输入信号ID上接收和执行VQ。信号ID可以由每个样本的采样/帧和比特的数量来表征，并且可以由传统的源编码器提供。传统的源编码器可以包括产生rxs采样/帧的采样保持（S / H）电路和提供每像素n位的ADC。在第一实施例中，比特数/样本数增加。在第二实施例中，样本/帧的数量增加。在第三实施例中，比特数/样本数和样本/帧数都增加。在涉及第一和第二实施例的模拟中进行的测量表明，固定质量源编码器具有比传统源编码器更小的数据速率，平均绝对误差（MAE）和均方根误差（RMSE），同时保持相同或较小的最大误差。固定质量源编码器包括编码器，还可以包括解码器。编码器可以包括有损编解码器，其接收和编码信号ID以向多路复用器提供关于信号ID的编码信息。有损编解码器还解码编码信号以产生解码信号IVQ-1。夏天接收ID和IVQ-1并确定误差信号ER，其中ER可以等于ID-IVQ-1。阈值电路接收信号ER并通过阈值信号ET，其中可以设置阈值电平T，以确保编码器中允许的最大误差等于特定期望的最大误差。

8. 发明申请

US20130155290A1 Method and System for Image Centering during Zooming 有权
标题翻译：缩放期间图像中心的方法和系统
公开(公告)号：US20130155290A1
公开(公告)日：2013-06-20
申请号：US13330511
申请日：2011-12-19
申请人： Chien-Min Huang
发明人： Chien-Min Huang
IPC分类号： H04N5/262
CPC分类号： H04N5/23296 , G06T7/74 , G06T2207/10016
摘要： The methods and systems described herein are directed to image processing. More specifically, the image processing described herein may include centering an object in the field of view during zooming. The image processing methods and systems may further include setting a magnification factor, positioning the camera in a first field of view capturing a first image, setting a second magnification factor, and capturing a second image. Additionally, the described techniques may include altering the first image to determine an offset and adjusting the camera based on the offset.
摘要翻译：本文描述的方法和系统涉及图像处理。更具体地说，本文描述的图像处理可以包括在缩放期间在对象的视场中居中。图像处理方法和系统还可以包括设置放大系数，将相机定位在捕获第一图像的第一视野中，设置第二放大因子以及捕获第二图像。另外，所描述的技术可以包括改变第一图像以确定偏移并且基于偏移来调整相机。

9. 发明申请

US20120154599A1 ZOOMING FACTOR COMPUTATION 有权
标题翻译：缩放因子计算
公开(公告)号：US20120154599A1
公开(公告)日：2012-06-21
申请号：US12971561
申请日：2010-12-17
申请人： Chien-Min Huang
发明人： Chien-Min Huang
IPC分类号： H04N5/225
CPC分类号： H04N5/247 , G08B13/19608 , G08B13/1963 , G08B13/19641 , G08B13/19643 , H04N5/232 , H04N5/23296
摘要： Systems, methods, and devices are disclosed for determining a zooming factor for a camera in a pan, tilt, and zoom (PTZ) camera tracking system to enable a camera to keep an object at a constant size within the camera's viewing area, despite changes in the object's distance from the camera. This provides a complement to a camera's pan and tilt tracking of the moving object. For example, a PTZ camera tracking system that determines an object to track, utilizes information regarding images of the object of interest are used to determine a zooming factor (or other zooming value) for a camera in the PTZ camera tracking system. This information includes variables such as tilt angles of one or more cameras and a reference zooming factor.
摘要翻译：公开了用于确定平移，倾斜和变焦（PTZ）相机跟踪系统中的相机的缩放因子的系统，方法和装置，以使得相机能够在相机的观看区域内将对象保持在恒定大小，尽管改变在物体距离相机的距离。这为摄像机对移动物体的摇摄和倾斜跟踪提供了补充。例如，使用PTZ摄像机跟踪系统，其确定要跟踪的对象，利用关于感兴趣对象的图像的信息来确定PTZ摄像机跟踪系统中的相机的缩放因子（或其他缩放值）。该信息包括诸如一个或多个相机的倾斜角度和参考缩放因子的变量。

10. 发明授权

US09049447B2 Video coding 有权
标题翻译：视频编码
公开(公告)号：US09049447B2
公开(公告)日：2015-06-02
申请号：US12982602
申请日：2010-12-30
申请人： Greg Millar , Farzin Aghdasi , Lei Wang , Chien-Min Huang
发明人： Greg Millar , Farzin Aghdasi , Lei Wang , Chien-Min Huang
IPC分类号： H04N7/12 , H04N19/23 , H04N19/61 , H04N21/647 , H04N21/2385 , H04N21/2662 , H04N21/462 , H04N19/172 , H04N19/176 , H04N19/00 , H04N19/102 , H04N19/20
CPC分类号： H04N19/23 , G08B13/19667 , H04N7/12 , H04N19/132 , H04N19/137 , H04N19/17 , H04N19/172 , H04N19/174 , H04N19/176 , H04N19/18 , H04N19/20 , H04N19/44 , H04N19/46 , H04N19/587 , H04N19/61 , H04N19/85 , H04N21/2385 , H04N21/2662 , H04N21/4621 , H04N21/64738 , H04N21/64769
摘要： Techniques are discussed for providing mechanisms for coding and transmitting high definition video, e.g., over low bandwidth connections. In particular, foreground-objects are identified as distinct from the background of a scene represented in a plurality of video frames received from a video source, such as a camera. In identifying foreground-objects, semantically significant and semantically insignificant movement (e.g., repetitive versus non-repetitive movement) is differentiated. Processing of the foreground-objects and background proceed at different update rates or frequencies.
摘要翻译：讨论了用于提供用于编码和传输高清晰度视频的机制的技术，例如通过低带宽连接。特别地，前景对象被识别为与从诸如相机的视频源接收的多个视频帧中表示的场景的背景不同。在识别前景对象时，区分语义上重要的和语义上不显着的移动（例如重复对非重复运动）。前景对象和背景的处理以不同的更新速率或频率进行。

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