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1. 发明申请

US20140050358A1 METHOD OF FACIAL LANDMARK DETECTION 有权
标题翻译：方法地名检测方法
公开(公告)号：US20140050358A1
公开(公告)日：2014-02-20
申请号：US13997296
申请日：2011-03-31
申请人： Ang Liu , Yangzhou Du , Tao Wang , Jianguo Li , Qiang Li , Yimin Zhang
发明人： Ang Liu , Yangzhou Du , Tao Wang , Jianguo Li , Qiang Li , Yimin Zhang
IPC分类号： G06K9/00
CPC分类号： G06K9/00248 , G06K9/00281 , G06K9/6209
摘要： Detecting facial landmarks in a face detected in an image may be performed by first cropping a face rectangle region of the detected face in the image and generating an integral image based at least in part on the face rectangle region. Next, a cascade classifier may be executed for each facial landmark of the face rectangle region to produce one response image for each facial landmark based at least in part on the integral image. A plurality of Active Shape Model (ASM) initializations may be set up. ASM searching may be performed for each of the ASM initializations based at least in part on the response images, each ASM search resulting in a search result having a cost. Finally, a search result of the ASM searches having a lowest cost function may be selected, the selected search result indicating locations of the facial landmarks in the image.
摘要翻译：可以通过首先裁剪图像中检测到的面部的面部矩形区域并且至少部分地基于面部矩形区域来生成整体图像来检测在图像中检测到的面部中的面部界标。接下来，可以对面部矩形区域的每个面部标记执行级联分类器，以至少部分地基于积分图像来为每个面部标记产生一个响应图像。可以设置多个活动形状模型（ASM）初始化。可以至少部分地基于响应图像来对每个ASM初始化执行ASM搜索，每个ASM搜索导致搜索结果具有成本。最后，可以选择具有最低成本函数的ASM搜索的搜索结果，所选择的搜索结果指示图像中的面部地标的位置。

2. 发明授权

US09965673B2 Method and apparatus for face detection in a frame sequence using sub-tasks and layers 有权
公开(公告)号：US09965673B2
公开(公告)日：2018-05-08
申请号：US13977684
申请日：2011-04-11
申请人： Yangzhou Du , Jianguo Li , Ang Liu , Tao Wang , Yimin Zhang
发明人： Yangzhou Du , Jianguo Li , Ang Liu , Tao Wang , Yimin Zhang
IPC分类号： G06K9/00 , G06K9/46 , G06K9/32 , G06T7/246 , G06K9/68
CPC分类号： G06K9/00261 , G06K9/00221 , G06K9/00228 , G06K9/00248 , G06K9/00288 , G06K9/46 , G06K9/6857 , G06T7/248 , G06T2207/20016 , G06T2207/30201
摘要： Techniques are disclosed that involve face detection. For instance, face detection tasks may be decomposed into sets of one or more sub-tasks. In turn the sub-tasks of the sets may be allocated across multiple image frames. This allocation may be based on a multiple layer, quad-tree approach. In addition, face tracking tasks may be performed.

3. 发明授权

US09471829B2 Method of facial landmark detection 有权
标题翻译：面部地标检测方法
公开(公告)号：US09471829B2
公开(公告)日：2016-10-18
申请号：US13997296
申请日：2011-03-31
申请人： Ang Liu , Yangzhou Du , Tao Wang , Jianguo Li , Qiang Li , Yimin Zhang
发明人： Ang Liu , Yangzhou Du , Tao Wang , Jianguo Li , Qiang Li , Yimin Zhang
IPC分类号： G06K9/00 , G06K9/46 , G06K9/62
CPC分类号： G06K9/00248 , G06K9/00281 , G06K9/6209
摘要： Detecting facial landmarks in a face detected in an image may be performed by first cropping a face rectangle region of the detected face in the image and generating an integral image based at least in part on the face rectangle region. Next, a cascade classifier may be executed for each facial landmark of the face rectangle region to produce one response image for each facial landmark based at least in part on the integral image. A plurality of Active Shape Model (ASM) initializations may be set up. ASM searching may be performed for each of the ASM initializations based at least in part on the response images, each ASM search resulting in a search result having a cost. Finally, a search result of the ASM searches having a lowest cost function may be selected, the selected search result indicating locations of the facial landmarks in the image.
摘要翻译：可以通过首先裁剪图像中检测到的面部的面部矩形区域并且至少部分地基于面部矩形区域来生成整体图像来检测在图像中检测到的面部中的面部界标。接下来，可以对面部矩形区域的每个面部标记执行级联分类器，以至少部分地基于积分图像来为每个面部标记产生一个响应图像。可以设置多个活动形状模型（ASM）初始化。可以至少部分地基于响应图像来对每个ASM初始化执行ASM搜索，每个ASM搜索导致搜索结果具有成本。最后，可以选择具有最低成本函数的ASM搜索的搜索结果，所选择的搜索结果指示图像中的面部地标的位置。

4. 发明申请

US20140072172A1 TECHNIQUES FOR FACE DETECETION AND TRACKING 有权
标题翻译：用于面部检测和跟踪的技术
公开(公告)号：US20140072172A1
公开(公告)日：2014-03-13
申请号：US13977684
申请日：2011-04-11
申请人： Yangzhou Du , Jianguo Li , Ang Liu
发明人： Yangzhou Du , Jianguo Li , Ang Liu
IPC分类号： G06K9/00
CPC分类号： G06K9/00261 , G06K9/00221 , G06K9/00228 , G06K9/00248 , G06K9/00288 , G06K9/46 , G06K9/6857 , G06T7/248 , G06T2207/20016 , G06T2207/30201
摘要： Techniques are disclosed that involve face detection. For instance, face detection tasks may be decomposed into sets of one or more sub-tasks. In turn the sub-tasks of the sets may be allocated across multiple image frames. This allocation may be based on a multiple layer, quad-tree approach. In addition, face tracking tasks may be performed.
摘要翻译：公开了涉及面部检测的技术。例如，面部检测任务可以被分解为一个或多个子任务的集合。反过来，这些集合的子任务可以跨多个图像帧分配。这种分配可以基于多层四叉树方法。此外，可以执行面部跟踪任务。

5. 发明申请

US20120061581A1 MIXED RESOLUTION AND MULTIPLEXING IMAGING METHOD AND SYSTEM 审中-公开
标题翻译：混合分辨率和多重成像方法与系统
公开(公告)号：US20120061581A1
公开(公告)日：2012-03-15
申请号：US13228187
申请日：2011-09-08
申请人： James W. Hugg , Ang Liu , Douglas J. Wagenaar , Bradley E. Patt
发明人： James W. Hugg , Ang Liu , Douglas J. Wagenaar , Bradley E. Patt
IPC分类号： G21K1/02 , G01T1/16
CPC分类号： G01T1/1648 , G21K1/02
摘要： Embodiments relate to an imaging system that includes a collimator assembly having two or more pinhole apertures therein. In one embodiment, the imaging system is configured so that two or more of the pinhole apertures have different focal lengths. The imaging system further includes a detector assembly configured to generate one or more signals in response to gamma photons that pass through the two or more pinhole apertures. Additional embodiments also relate to methods of changing collimator performance and methods of imaging a volume.
摘要翻译：实施例涉及一种成像系统，其包括其中具有两个或更多个针孔的准直器组件。在一个实施例中，成像系统被配置为使得两个或更多个针孔具有不同的焦距。成像系统还包括检测器组件，其被配置为响应于穿过两个或更多个针孔的伽马光子而产生一个或多个信号。另外的实施例还涉及改变准直器性能的方法和对体积进行成像的方法。

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