公开(公告)号：US06897903B1

公开(公告)日：2005-05-24

申请号：US09652071

申请日：2000-08-31

Applicant: Shane Ching-Feng Hu

Inventor： Shane Ching-Feng Hu

IPC: H04N5/14 ,  H04N5/44 ,  H04N5/46

CPC classification number: H04N5/147 ,  H04N7/0115 ,  H04N7/012

Abstract: A method and apparatus of identifying the source of materials in a video sequence is disclosed. A series of pseudo frames is formed, for example by interleaving, from fields in adjacent frames. A correlation value is calculated for each of the pseudo frames. The correlation value may be a sum of absolute difference (SAD) of luminance values of every neighboring scan line accumulated over the entire pseudo frame. Scene changes may be determined, for example, based on the correlation values. Frames and repeated fields are identified based on the correlation values and the scene changes. Finally, the source of each frame in the series is identified based on the identification of frames and repeated fields.

Abstract translation: 公开了一种识别视频序列中的材料源的方法和装置。 一系列伪帧例如通过交织从相邻帧中的字段形成。 为每个伪帧计算相关值。 相关值可以是在整个伪帧上累积的每个相邻扫描线的亮度值的绝对差（SAD）之和。 可以例如基于相关值来确定场景变化。 基于相关值和场景变化来识别帧和重复场。 最后，根据帧和重复字段的识别来识别系列中每帧的源。

公开(公告)号：US06888732B2

公开(公告)日：2005-05-03

申请号：US10713527

申请日：2003-11-12

Applicant: Shane Ching-Feng Hu

Inventor： Shane Ching-Feng Hu

IPC: G11C15/04 ,  G11C7/00

CPC classification number: G11C15/043 ,  G11C15/04

Abstract: A static content addressable memory (CAM) cell. The CAM cell includes a latch having complementary data nodes capacitively coupled to ground, first and second access transistors, each coupled between a data node of the latch and a respective data line. The gates of each access transistor is coupled to a word line such that when activated, the respective data node and data line are coupled. The CAM cell further includes a match circuit coupled to one of the complementary data nodes of the latch. The match circuit discharges a match line in response to a data value stored at the data node to which the match circuit is coupled and compare data present on the respective data line mismatching. Two of the CAM cells can be used to implement a full ternary CAM cell.

Abstract translation: 静态内容可寻址存储器（CAM）单元。 CAM单元包括具有电容耦合到地的互补数据节点的锁存器，第一和第二存取晶体管，每个耦合在锁存器的数据节点和相应的数据线之间。 每个存取晶体管的栅极耦合到字线，使得当被激活时，相应的数据节点和数据线被耦合。 CAM单元还包括耦合到锁存器的互补数据节点之一的匹配电路。 匹配电路响应于与匹配电路耦合的数据节点存储的数据值放电匹配线，并比较存在于相应数据线不匹配的数据。 可以使用两个CAM单元来实现完整的三元CAM单元。

公开(公告)号：US06483538B2

公开(公告)日：2002-11-19

申请号：US09186761

申请日：1998-11-05

Applicant: Shane Ching-Feng Hu

Inventor： Shane Ching-Feng Hu

IPC: H04N1700

CPC classification number: G06T7/32

Abstract: A high precision sub-pixel spatial alignment of digital images, one from a reference video signal and another from a corresponding test video signal, uses an iterative process and incorporates spatial resampling along with basic correlation and estimation of fractional pixel shift. The corresponding images from the reference and test video signals are captured and a test block is overlaid on them at the same locations to include texture from the images. FFTs are performed within the test block in each image, and the FFTs are cross-correlated to develop a peak value representing a shift position between the images. A curve is fitted to the peak and neighboring values to find the nearest integer pixel shift position. The test block is shifted in the test image by the integer pixel shift position, and the FFT in the test image is repeated and correlated with the FFT from the reference image. The curve fitting is repeated to obtain a fractional pixel shift position value that is combined with the integer pixel shift value to update the test block position again in the test image. The steps are repeated until an end condition is achieved, at which point the value of the pixel shift position for the test block in the test image relative to the reference image is used to align the two images with high precision sub-pixel accuracy.

Abstract translation: 数字图像的高精度子像素空间对准，一个来自参考视频信号，另一个来自相应的测试视频信号，使用迭代过程，并结合空间重采样以及基本相关和分数像素移位的估计。 捕获来自参考和测试视频信号的相应图像，并且在相同位置叠加测试块以包括来自图像的纹理。 在每个图像中的测试块内执行FFT，并且FFT是相互关联的，以产生表示图像之间的移位位置的峰值。 曲线拟合到峰值和相邻值以找到最接近的整数像素位移位置。 测试块在测试图像中移位整数像素移位位置，并且测试图像中的FFT被重复并与参考图像的FFT相关。 重复曲线拟合以获得与整数像素移位值组合的分数像素移位位置值，以在测试图像中再次更新测试块位置。 重复这些步骤，直到达到结束条件，此时使用测试图像中的测试块相对于参考图像的像素偏移位置的值来对准具有高精度子像素精度的两个图像。

公开(公告)号：US07538801B2

公开(公告)日：2009-05-26

申请号：US10661551

申请日：2003-09-15

Applicant: Shane Ching-Feng Hu ,  Atif Sarwari

Inventor： Shane Ching-Feng Hu ,  Atif Sarwari

IPC: H04N5/235 ,  G06K9/00

CPC classification number: H04N5/2351 ,  H04N5/2352 ,  H04N5/2353 ,  H04N5/243

Abstract: An apparatus and method for performing automatic exposure and gain control while minimizing oscillations as well as providing a good response time, for example, a lag time or a settling time of about one frame. The automatic exposure and gain controls are performed not only on the image as a whole but on a weighted region of interest. If the contrast in the image exceeds the dynamic range of the sensor array, then the image in the region of interest will improve at the expense of the remainder of the image. A region of interest is a selected subset of tiles upon which automatic exposure and gain control will be based. The tiles are defined by a grid system having grid coordinates, which are programmable. Image sensors have to receive feedback with regular updates of exposure and gain settings based on ever changing light conditions.

Abstract translation: 一种用于在最小化振荡的同时执行自动曝光和增益控制以及提供良好的响应时间（例如，滞后时间或约一帧的建立时间）的装置和方法。 自动曝光和增益控制不仅在整个图像上，而且在感兴趣的加权区域上进行。 如果图像中的对比度超过传感器阵列的动态范围，则感兴趣区域中的图像将以牺牲图像的其余部分为代价。 感兴趣区域是自动曝光和增益控制所基于的瓷砖的选定子集。 瓦片由具有可编程的网格坐标的网格系统定义。 图像传感器必须根据不断变化的光线条件定期更新曝光和增益设置，以接收反馈。

公开(公告)号：US07262780B2

公开(公告)日：2007-08-28

申请号：US10922934

申请日：2004-08-23

Applicant: Shane Ching-Feng Hu

Inventor： Shane Ching-Feng Hu

IPC: G09G5/02

CPC classification number: H04N9/045 ,  H04N1/608 ,  H04N9/64

Abstract: A method and system for adjusting saturation in digital images that operates as closely as possible to the long-, medium-, short-(LMS) cone spectral response space. According to the method, a sensor component image such as an RGB image from a digital imager is input and converted to the LMS space. White point adaptation and equalization are performed on the LMS data. The saturation adjustment is then performed by applying a stretching transformation to the L and S LMS components with respect to the M component of each pixel.

公开(公告)号：US06952359B2

公开(公告)日：2005-10-04

申请号：US10712851

申请日：2003-11-12

Applicant: Shane Ching-Feng Hu

Inventor： Shane Ching-Feng Hu

IPC: G11C15/04 ,  G11C15/00

CPC classification number: G11C15/043 ,  G11C15/04

Abstract: A static content addressable memory (CAM) cell. The CAM cell includes a latch having complementary data nodes capacitively coupled to ground, first and second access transistors, each coupled between a data node of the latch and a respective data line. The gates of each access transistor is coupled to a word line such that when activated, the respective data node and data line are coupled. The CAM cell further includes a match circuit coupled to one of the complementary data nodes of the latch. The match circuit discharges a match line in response to a data value stored at the data node to which the match circuit is coupled and compare data present on the respective data line mismatching. Two of the CAM cells can be used to implement a full ternary CAM cell.

公开(公告)号：US06751110B2

公开(公告)日：2004-06-15

申请号：US10094574

申请日：2002-03-08

Applicant: Shane Ching-Feng Hu

Inventor： Shane Ching-Feng Hu

IPC: G11C1500

CPC classification number: G11C15/043 ,  G11C15/04

Abstract: A static content addressable memory (CAM) cell. The CAM cell includes a latch having complementary data nodes capacitively coupled to ground, first and second access transistors, each coupled between a data node of the latch and a respective data line. The gates of each access transistor is coupled to a word line such that when activated, the respective data node and data line are coupled. The CAM cell further includes a match circuit coupled to one of the complementary data nodes of the latch. The match circuit discharges a match line in response to a data value stored at the data node to which the match circuit is coupled and compare data present on the respective data line mismatching. Two of the CAM cells can be used to implement a full ternary CAM cell.

公开(公告)号：US06690840B1

公开(公告)日：2004-02-10

申请号：US09499886

申请日：2000-02-08

Applicant: Bozidar Janko ,  Shane Ching-Feng Hu

Inventor： Bozidar Janko ,  Shane Ching-Feng Hu

IPC: G06K932

CPC classification number: G06T3/00 ,  G06T7/32

Abstract: A technique for image alignment with global translation and linear stretch determines translation parameters for three corresponding linearly displaced blocks in a reference image and a corresponding distorted test image. From the differences between the translation parameters for the three blocks the presence of stretch is detected and, if detected, a stretch factor is estimated. The estimated stretch factor is used as a starting point to stretch the reference image to overlap the distorted test image as a refinement process. The resulting refined stretch factor is then used in a reverse stretch process to shrink the distorted test image, and the distorted test image is then aligned with the reference image to obtain picture quality metrics.

Abstract translation: 用于具有全局平移和线性拉伸的图像对准的技术确定参考图像中的三个对应的线性位移块的平移参数和相应的失真测试图像。 根据三个块的平移参数之间的差异，检测到拉伸的存在，并且如果检测到的话，估计拉伸因子。 使用估计的拉伸因子作为起始点来拉伸参考图像以与失真的测试图像重叠，作为细化过程。 然后将所得到的精细拉伸因子用于反向拉伸过程以收缩失真的测试图像，然后将失真的测试图像与参考图像对准以获得图像质量度量。

公开(公告)号：US5748247A

公开(公告)日：1998-05-05

申请号：US629421

申请日：1996-04-08

Applicant: Shane Ching-Feng Hu

Inventor： Shane Ching-Feng Hu

IPC: H04N7/26 ,  H04N7/30 ,  H04N7/32

CPC classification number: H04N19/96 ,  H04N19/51

Abstract: Refinement of motion block motion vectors to achieve a dense motion field for temporal video signal processing makes use of candidate motion vectors from a parent block and neighboring child block groups to determine the motion vector for a child block within one of the child block groups. The vicinity of each candidate motion vector may be searched to obtain a trial motion vector having a minimum displaced frame difference measure, with the trial motion vector with the minimum displaced frame difference measure from among all the trial motion vectors being the motion vector for the child block. Alternatively each candidate motion vector may be applied to the child block, and the vicinity of the candidate motion vector having the minimum displaced frame difference being searched to obtain the motion vector for the child block. If the minimum displaced frame difference is not less than a given threshold, the child block is segmented and the process repeated until the child block size is a single pixel or the minimum displaced frame difference is less than the threshold.

Abstract translation: 运动块运动矢量的细化以实现用于时间视频信号处理的密集运动场，利用来自父块和相邻子块组的候选运动矢量来确定子块组内的子块的运动矢量。 可以搜索每个候选运动矢量的附近以获得具有最小位移帧差测量的试验运动矢量，其中所有试运动矢量中的最小位移帧差测量的试运动矢量是儿童的运动矢量 块。 或者，每个候选运动矢量可以被应用于子块，并且搜索具有最小偏移帧差的候选运动矢量的附近以获得子块的运动矢量。 如果最小位移帧差异不小于给定阈值，则子块被分段，并且重复该过程，直到子块大小为单个像素，或者最小位移帧差小于阈值。

公开(公告)号：US20110080487A1

公开(公告)日：2011-04-07

申请号：US12952134

申请日：2010-11-22

Applicant: Kartik VENKATARAMAN ,  Amandeep S. Jabbi ,  Robert H. Mullis ,  Jacques Duparre ,  Shane Ching-Feng Hu

Inventor： Kartik VENKATARAMAN ,  Amandeep S. Jabbi ,  Robert H. Mullis ,  Jacques Duparre ,  Shane Ching-Feng Hu

IPC: H04N5/225

CPC classification number: H04N5/247 ,  G02B3/0056 ,  G02B3/0062 ,  G02B5/20 ,  G02B5/201 ,  G02B13/0015 ,  G06T7/557 ,  G06T11/60 ,  G06T19/20 ,  G06T2200/04 ,  G06T2207/10028 ,  G06T2207/10052 ,  G06T2207/20221 ,  H04N5/2253 ,  H04N5/2254 ,  H04N5/2258 ,  H04N5/23232 ,  H04N5/23238 ,  H04N5/23296 ,  H04N5/262 ,  H04N5/265 ,  H04N5/332 ,  H04N5/3415 ,  H04N5/349 ,  H04N5/35545 ,  H04N5/357 ,  H04N5/365 ,  H04N9/045 ,  H04N9/09 ,  H04N9/097 ,  H04N9/735 ,  H04N13/128 ,  H04N13/239 ,  H04N13/257 ,  H04N2013/0081

Abstract: Systems and methods for implementing array cameras configured to perform super-resolution processing to generate higher resolution super-resolved images using a plurality of captured images and lens stack arrays that can be utilized in array cameras are disclosed. An imaging device in accordance with one embodiment of the invention includes at least one imager array, and each imager in the array comprises a plurality of light sensing elements and a lens stack including at least one lens surface, where the lens stack is configured to form an image on the light sensing elements, control circuitry configured to capture images formed on the light sensing elements of each of the imagers, and a super-resolution processing module configured to generate at least one higher resolution super-resolved image using a plurality of the captured images.

Abstract translation: 公开了一种用于实现阵列相机的系统和方法，其被配置为执行超分辨率处理以使用可用于阵列相机中的多个捕获图像和透镜组阵列来生成更高分辨率的超分辨率图像。 根据本发明的一个实施例的成像装置包括至少一个成像器阵列，并且阵列中的每个成像器包括多个光感测元件和包括至少一个透镜表面的透镜堆叠，其中透镜堆叠被配置成形成 感光元件上的图像，被配置为捕获形成在每个成像器的光感测元件上的图像的控制电路，以及超分辨率处理模块，其被配置为使用多个所述图像生成至少一个更高分辨率的超分辨率图像 捕获的图像。