公开(公告)号：US20130259322A1

公开(公告)日：2013-10-03

申请号：US13436889

申请日：2012-03-31

申请人： Xiao Lin ,  Zhi Zhou

发明人： Xiao Lin ,  Zhi Zhou

IPC分类号： G06K9/62

CPC分类号： G06K9/036 ,  G06K9/0061

摘要： An iris recognition system incorporating two-level iris image quality assessment method is presented. Images with very low image quality may be assigned quality zero and not be further processed. Images with sufficient quality may be qualitatively assessed and each quality metric score may be calibrated. The calibrated quality scores may be fused to generate one quality score.

摘要翻译： 提出了一种结合二级虹膜图像质量评估方法的虹膜识别系统。 具有非常低图像质量的图像可以被分配质量零，并且不被进一步处理。 可以定性评估具有足够质量的图像，并且可以校准每个质量度量分数。 校准的质量得分可以融合以产生一个质量得分。

公开(公告)号：USD977695S1

公开(公告)日：2023-02-07

申请号：US29820206

申请日：2021-12-20

申请人： Zhi Zhou

设计人： Zhi Zhou

公开(公告)号：US09788019B2

公开(公告)日：2017-10-10

申请号：US13156552

申请日：2011-06-09

申请人： Shan Liu ,  Zhi Zhou ,  Shaw-Min Lei

发明人： Shan Liu ,  Zhi Zhou ,  Shaw-Min Lei

IPC分类号： H04N11/02 ,  H04N19/96 ,  H04N19/176 ,  H04N19/70 ,  H04N19/119

CPC分类号： H04N19/96 ,  H04N19/119 ,  H04N19/176 ,  H04N19/70

摘要： Transform unit (TU) partition method and apparatus depending on the coding unit (CU) partition and prediction unit (PU) partition are disclosed. In one embodiment, the maximum TU size is restricted to the minimum of PU width and height, except for a 2N×2N coding unit with the 2N×2N partition type. In another embodiment, the maximum TU size equals to maximum of PU width and height, and the minimum TU size equals to minimum of the PU width and height, except for a 2N×2N coding unit with the 2N×2N partition type. In yet another embodiment, the maximum TU size is equal to the maximum of PU width and height, and the minimum TU size is equal to the minimum of PU width and height except for a 2N×2N CU with 2N×2N partition type.

公开(公告)号：US08880571B2

公开(公告)日：2014-11-04

申请号：US11418627

申请日：2006-05-05

申请人： Sridhar Srinivasan ,  Zhi Zhou

发明人： Sridhar Srinivasan ,  Zhi Zhou

IPC分类号： G06F7/00 ,  G06F15/00 ,  H04N1/60 ,  H03M7/24 ,  H04N1/407

CPC分类号： H03M7/24 ,  H04N1/407 ,  H04N1/6027

摘要： One or more continuous mappings are defined at a digital media encoder to convert input digital media data in a first high dynamic range format to a second format with a smaller dynamic range than the first format. The encoder converts the input digital media data to the second format with the smaller dynamic range using the continuous mapping and one or more conversion parameters relating to the continuous mapping. The encoder encodes the converted digital media data in a bitstream along with the conversion parameter(s). The conversion parameter(s) enable a digital media decoder to convert the converted digital media data back to the first high dynamic range format from the second format with the smaller dynamic range. Techniques for converting different input formats with different dynamic ranges are described.

摘要翻译： 在数字媒体编码器处定义一个或多个连续映射，以将第一高动态范围格式的输入数字媒体数据转换成具有比第一格式更小的动态范围的第二格式。 编码器使用连续映射和与连续映射相关的一个或多个转换参数将输入数字媒体数据转换为具有较小动态范围的第二格式。 编码器将转换的数字媒体数据与转换参数一起编码在比特流中。 转换参数使得数字媒体解码器能够将转换的数字媒体数据从具有较小动态范围的第二格式转换回第一高动态范围格式。 描述用于转换具有不同动态范围的不同输入格式的技术。

公开(公告)号：US08644565B2

公开(公告)日：2014-02-04

申请号：US13055250

申请日：2009-07-22

申请人： Eliza Yingzi Du ,  Zhi Zhou ,  Emrah Arslanturk

发明人： Eliza Yingzi Du ,  Zhi Zhou ,  Emrah Arslanturk

IPC分类号： G06K9/00

CPC分类号： G06K9/00604

摘要： A method segments iris images from eye image data captured from non-cooperative subjects. The method includes receiving a frame of eye image data, and determining whether a pupil exists in the image by detecting glare areas in the image. Upon finding a pupil, subsequent images are processed with reference to the pupil location and a radius is calculated for the pupil. A k means clustering method and principal component analysis are used to locate pupil boundary points, which are fitted to a conic. Using the pupil boundary, an angular derivative is computed for each frame having a pupil and iris boundary points are fitted to a conic to identify an iris region between the iris boundary and the pupil boundary. Noise data are then removed from the iris region to generate an iris segment. A method for evaluating iris frame quality and iris image segmentation quality is also disclosed.

摘要翻译： 一种方法从非合作对象捕获的眼图数据中分割虹膜图像。 该方法包括接收一帧眼图数据，并通过检测图像中的眩光区域来确定图像中是否存在瞳孔。 在找到瞳孔时，参考瞳孔位置处理随后的图像，并计算瞳孔的半径。 A k表示聚类方法，主成分分析用于定位适合于锥体的瞳孔边界点。 使用瞳孔边界，对于具有瞳孔的每个帧计算角度导数，并且将虹膜边界点拟合到圆锥，以识别虹膜边界和瞳孔边界之间的虹膜区域。 然后从虹膜区域移除噪声数据，以产生虹膜段。 还公开了一种用于评估虹膜框架质量和虹膜图像分割质量的方法。

公开(公告)号：US08432392B2

公开(公告)日：2013-04-30

申请号：US13160409

申请日：2011-06-14

申请人： Yoon Kyung Kim ,  Zhi Zhou ,  Yeong-Taeg Kim

发明人： Yoon Kyung Kim ,  Zhi Zhou ,  Yeong-Taeg Kim

IPC分类号： G06T15/00

CPC分类号： H04N13/261 ,  G06T7/50 ,  H04N13/271

摘要： A method of operation of a display system includes: receiving a current input image with current input pixels; identifying an input object, having input object pixels, based on differences in characteristics of the current input pixels; calculating an object pixel depth for the input object pixels from an image depth map of the current input image based on a weighted average of depth candidates; and generating a processed image, having a perceived depth, from the current input image with the image depth map and the object pixel depth for displaying on a device.

摘要翻译： 显示系统的操作方法包括：利用当前输入像素接收当前输入图像; 基于当前输入像素的特性的不同，识别具有输入对象像素的输入对象; 基于深度候选的加权平均，从当前输入图像的图像深度图计算输入对象像素的对象像素深度; 并且从具有图像深度图的当前输入图像和用于在设备上显示的对象像素深度生成具有感知深度的处理图像。

公开(公告)号：US20130010873A1

公开(公告)日：2013-01-10

申请号：US13619288

申请日：2012-09-14

申请人： Surapong Lertrattanapanich ,  Yeong-Taeg Kim ,  Zhi Zhou

发明人： Surapong Lertrattanapanich ,  Yeong-Taeg Kim ,  Zhi Zhou

IPC分类号： H04N7/32

CPC分类号： G06T7/238 ,  G06T2207/10016 ,  G06T2207/20021

摘要： A system and method which determines an adaptive vertical search range used to provide motion estimation in digital video content are disclosed. In some embodiments, a fixed-size vertical search range for the motion estimation is defined and utilized. A reference frame and target frame are stored in memory, and a block in the reference frame is selected for consideration. An offset value is determined which is indicative of a directional shift of the fixed-size vertical search range and the vertical search range is shifted based on the offset value. A motion vector is then estimated using the shifted vertical search range.

摘要翻译： 公开了一种确定用于在数字视频内容中提供运动估计的自适应垂直搜索范围的系统和方法。 在一些实施例中，定义和利用用于运动估计的固定尺寸垂直搜索范围。 将参考帧和目标帧存储在存储器中，并且选择参考帧中的块以供考虑。 确定指示固定尺寸垂直搜索范围的方向偏移的偏移值，并且基于偏移值移动垂直搜索范围。 然后使用偏移的垂直搜索范围来估计运动矢量。

公开(公告)号：US08295346B2

公开(公告)日：2012-10-23

申请号：US12420763

申请日：2009-04-08

申请人： Zhi Zhou ,  Yeongtaeg Kim

发明人： Zhi Zhou ,  Yeongtaeg Kim

IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  G06K9/36 ,  G06K9/00 ,  H03M7/00

CPC分类号： H04N19/186 ,  H04N19/124 ,  H04N19/14 ,  H04N19/176 ,  H04N19/61

摘要： Video processing systems and methods for preservation of small details in video undergoing quantization is discussed. Small details are preserved by identifying an area of interest within a video frame, determining whether small details are present within the selected portion of the video frame, and further determining whether those small details may be lost during quantization. In the event that small details are present in the selected portion of the video frame and may be lost during quantization, a color-shifting operation may be performed on one or more color components of the selected portion of the video frame, such as luminance, prior to quantization to preserve the small detail. During the color-shifting operation, the values of at least one color component of pixels representing the video frame are shifted such that the pixels extend between at least two quantization levels when quantized. In this manner, small detail is preserved, while also allowing for a reduction in the total bits of information contained in the video frame.

摘要翻译： 讨论了视频处理系统和用于保存正在进行量化的视频中的小细节的方法。 通过识别视频帧内的感兴趣区域来确定小细节，确定视频帧的所选部分内是否存在小细节，并且进一步确定在量化期间这些小细节是否可能丢失。 在视频帧的所选部分中存在小细节并且可能在量化期间丢失的情况下，可以对视频帧的所选部分的一个或多个颜色分量执行色彩转换操作，诸如亮度， 在量化之前保存小细节。 在色彩变换操作期间，表示视频帧的像素的至少一个颜色分量的值被移位，使得像素在量化时在至少两个量化级之间延伸。 以这种方式，保留了细节，同时还允许减少包含在视频帧中的信息的总比特。

公开(公告)号：US08154151B2

公开(公告)日：2012-04-10

申请号：US13074323

申请日：2011-03-29

申请人： Robert Dean King ,  Zhi Zhou

发明人： Robert Dean King ,  Zhi Zhou

IPC分类号： B60L1/00

CPC分类号： B60L11/1842 ,  B60L3/0069 ,  B60L3/04 ,  B60L11/005 ,  B60L11/16 ,  B60L11/184 ,  B60L11/1857 ,  B60L11/1862 ,  B60L2210/20 ,  B60L2240/545 ,  B60L2240/547 ,  B60L2240/549 ,  Y02E60/721 ,  Y02T10/7005 ,  Y02T10/7022 ,  Y02T10/7044 ,  Y02T10/705 ,  Y02T10/7072 ,  Y02T10/725 ,  Y02T90/121 ,  Y02T90/127 ,  Y02T90/128 ,  Y02T90/14 ,  Y02T90/163 ,  Y02T90/169 ,  Y04S10/126 ,  Y04S30/14 ,  Y10T307/516

摘要： An apparatus, system, and method, the apparatus includes an intelligent energy transfer system including a configurable switching system electrically coupleable to a vehicle. The vehicle includes one of an electric vehicle and a plug-in hybrid electric vehicle. The configurable switching system is configured to convey a first direct current (DC) energy from a first energy source to an energy storage system of the vehicle, receive a first alternating current (AC) energy conveyed to the vehicle, convey a second DC energy from the vehicle to a first DC powered load, and convey a second AC energy from the vehicle to a first AC powered load. Each of the first energy source, the first AC powered load, and the first DC powered load are located remotely from the vehicle.

摘要翻译： 一种装置，系统和方法，该装置包括智能能量传递系统，其包括可耦合到车辆的可配置开关系统。 车辆包括电动车辆和插电式混合电动车辆中的一种。 可配置开关系统被配置为将来自第一能量源的第一直流（DC）能量传送到车辆的能量存储系统，接收传送到车辆的第一交流电（AC）能量，将第二直流能量从 车辆到第一DC动力负载，并将第二AC能量从车辆传送到第一AC动力负载。 第一能量源，第一交流供电负载和第一直流供电负载中的每一个位于远离车辆的位置。

公开(公告)号：US08050325B2

公开(公告)日：2011-11-01

申请号：US11767365

申请日：2007-06-22

申请人： Zhi Zhou ,  Yeong Taeg Kim

发明人： Zhi Zhou ,  Yeong Taeg Kim

IPC分类号： H04N7/12 ,  H04N11/02 ,  G06K9/36

CPC分类号： H04N5/145 ,  H04N7/0127 ,  H04N7/014 ,  H04N19/176 ,  H04N19/40 ,  H04N19/44 ,  H04N19/521 ,  H04N19/55 ,  H04N19/553 ,  H04N19/61

摘要： A system and method for more efficiently determining motion vectors of uncovering areas adjacent the edge of frames when the frame image is moving in the direction of the frame boundary. Backwards motion estimation is used to determine a block of video data which is, in one implementation, the block of video data adjacent the frame edge having a reliable motion vector known from the first frame. Once the block is identified, the blocks of video data in the uncovering area between the identified block and the frame boundary can then be assigned the motion vector data of the identified block.

摘要翻译： 一种用于当帧图像沿着帧边界的方向移动时，用于更有效地确定与帧边缘相邻的露出区域的运动矢量的系统和方法。 向后运动估计用于确定视频数据块，在一个实现中，与帧边缘相邻的视频数据块具有从第一帧已知的可靠的运动矢量。 一旦识别出块，则识别的块和帧边界之间的揭露区域中的视频数据块可以被分配给所识别的块的运动矢量数据。