公开(公告)号：US08594205B2

公开(公告)日：2013-11-26

申请号：US11869443

申请日：2007-10-09

申请人： Hamid Jafarkhani ,  Michael T. Orchard ,  Amy R. Reibman ,  Yao Wang

发明人： Hamid Jafarkhani ,  Michael T. Orchard ,  Amy R. Reibman ,  Yao Wang

IPC分类号： H04B14/06

CPC分类号： H03M7/40 ,  H04N19/39 ,  H04N19/61

摘要： A method and apparatus reliably encode and decode information over a communication system. The method includes transforming two coefficients into two pairs of random variables, one random variable in each pair having substantially equal energy as one random variable in the other pair. The method further includes quantizing each of the pairs of random variables and entropy coding each quantized random variable separately creating an encoded bitstreams. The encoded bitstreams are received by a decoder which first determines which channels of the communication system are working. The encoded bitstream is entropy decoded, inversed quantized and inversed transformed. An inverse transform performs three different transformations depending upon which channels are working, i.e., whether the first, second or both channels are working.

摘要翻译： 一种方法和装置通过通信系统可靠地编码和解码信息。 该方法包括将两个系数变换成两对随机变量，每对中的一个随机变量具有基本相等的能量作为另一对中的一个随机变量。 该方法还包括量化每对随机变量，并对每个量化的随机变量进行熵编码，分别创建编码比特流。 编码的比特流由解码器接收，该解码器首先确定通信系统的哪些信道正在工作。 编码比特流被熵解码，反相量化和反转换。 逆变换根据哪个通道工作，即第一，第二或两个通道是否工作，执行三种不同的变换。

公开(公告)号：US07289565B1

公开(公告)日：2007-10-30

申请号：US10994511

申请日：2004-11-22

申请人： Hamid Jafarkhani ,  Michael T. Orchard ,  Amy R. Reibman ,  Yao Wang

发明人： Hamid Jafarkhani ,  Michael T. Orchard ,  Amy R. Reibman ,  Yao Wang

IPC分类号： H04B14/06

CPC分类号： H04N19/39

摘要： A method and apparatus reliably encode and decode information over a communication system. The method includes transforming two coefficients into two pairs of random variables, one random variable in each pair having substantially equal energy as one random variable in the other pair. The method further includes quantizing each of the pairs of random variables and entropy coding each quantized random variable separately creating an encoded bitstreams. The encoded bitstreams are received by a decoder which first determines which channels of the communication system are working. The encoded bitstream is entropy decoded, inversed quantized and inversed transformed. An inverse transform performs three different transformations depending upon which channels are working, i.e., whether the first, second or both channels are working.

摘要翻译： 一种方法和装置通过通信系统可靠地编码和解码信息。 该方法包括将两个系数变换成两对随机变量，每对中的一个随机变量具有基本相等的能量作为另一对中的一个随机变量。 该方法还包括量化每对随机变量，并对每个量化的随机变量进行熵编码，分别创建编码比特流。 编码的比特流由解码器接收，该解码器首先确定通信系统的哪些信道正在工作。 编码比特流被熵解码，反相量化和反转换。 逆变换根据哪个通道工作，即第一，第二或两个通道是否工作，执行三种不同的变换。

公开(公告)号：US06823018B1

公开(公告)日：2004-11-23

申请号：US09511367

申请日：2000-02-23

申请人： Hamid Jafarkhani ,  Michael T. Orchard ,  Amy R. Reibman ,  Yao Wang

发明人： Hamid Jafarkhani ,  Michael T. Orchard ,  Amy R. Reibman ,  Yao Wang

IPC分类号： H04B1406

CPC分类号： H04N19/39

摘要： A method and apparatus reliably encode and decode information over a communication system. The method includes transforming two coefficients into two pairs of random variables, one random variable in each pair having substantially equal energy as one random variable in the other pair. The method further includes quantizing each of the pairs of random variables and entropy coding each quantized random variable separately creating an encoded bitstreams. The encoded bitstreams are received by a decoder which first determines which channels of the communication system are working. The encoded bitstream is entropy decoded, inversed quantized and inversed transformed. An inverse transform performs three different transformations depending upon which channels are working, i.e., whether the first, second or both channels are working.

摘要翻译： 一种方法和装置通过通信系统可靠地编码和解码信息。 该方法包括将两个系数变换成两对随机变量，每对中的一个随机变量具有基本相等的能量作为另一对中的一个随机变量。 该方法还包括量化每对随机变量，并对每个量化的随机变量进行熵编码，分别创建编码比特流。 编码的比特流由解码器接收，该解码器首先确定通信系统的哪些信道正在工作。 编码比特流被熵解码，反相量化和反转换。 逆变换根据哪个通道工作，即第一，第二或两个通道是否工作，执行三种不同的变换。

公开(公告)号：US06628845B1

公开(公告)日：2003-09-30

申请号：US09526417

申请日：2000-03-15

申请人： Harold S. Stone ,  Michael T. Orchard ,  EE-Chien Chang ,  Stephen Martucci

发明人： Harold S. Stone ,  Michael T. Orchard ,  EE-Chien Chang ,  Stephen Martucci

IPC分类号： G06K932

CPC分类号： G06T3/4084 ,  G06K9/6203 ,  G06T7/37

摘要： Methods for registering first and second images which are offset by an x and/or y displacement in sub-pixel locations are provided. A preferred implementation of the methods includes the steps of: multiplying the first image by a window function to create a first windowed image; transforming the first windowed image with a Fourier transform to create a first image Fourier transform; multiplying the second image by the window function to create a second windowed image; transforming the second windowed image with a Fourier transform to create a second image Fourier transform; computing a collection of coordinate pairs from the first and second image Fourier transforms such that at each coordinate pair the values of the first and second image Fourier transforms are likely to have very little aliasing noise; computing an estimate of a linear Fourier phase relation between the-first and second image Fourier transforms using the Fourier phases of the first and second image Fourier transforms at the coordinate pairs in a minimum-least squares sense; and computing the displacements in the x and/or y directions from the linear Fourier phase relationship. Also provided are a computer program having computer readable program code and program storage device having a program of instructions for executing and performing the methods of the present invention, respectively.

摘要翻译： 提供了用于记录由子像素位置中的x和/或y位移偏移的第一和第二图像的方法。 该方法的优选实现包括以下步骤：将第一图像乘以窗口函数以产生第一窗口化图像; 用傅里叶变换变换第一窗口图像以产生第一图像傅里叶变换; 将第二图像乘以窗口函数以创建第二窗口图像; 用傅立叶变换来变换第二窗口图像以产生第二图像傅里叶变换; 从第一和第二图像傅里叶变换计算坐标对的集合，使得在每个坐标对处，第一和第二图像傅里叶变换的值可能具有非常小的混叠噪声; 使用所述坐标对上的所述第一和第二图像傅里叶变换的傅里叶相位，以最小 - 最小二乘的方式计算所述第一和第二图像付里叶变换之间的线性傅立叶相位关系的估计; 并从线性傅立叶相位关系计算x和/或y方向上的位移。 还提供了具有计算机可读程序代码和程序存储装置的计算机程序，其具有分别用于执行和执行本发明的方法的指令程序。

公开(公告)号：US5047842A

公开(公告)日：1991-09-10

申请号：US431487

申请日：1989-11-03

申请人： Charles A. Bouman, Jr. ,  Michael T. Orchard

发明人： Charles A. Bouman, Jr. ,  Michael T. Orchard

IPC分类号： G06T11/00

CPC分类号： G06T11/001

摘要： A method for creating from a digitized color image, a tree structured partitioning of all pixels in the image into M disjoint sets, with the pixels in each set having similar color values, the method comprising the steps of: separating and assigning all pixels in the image into disjoint sets so as to minimize the difference between the respective pixel color values in each set; selecting one of the sets which has a greatest variation of color values of assigned pixels, and separating and assigning all pixels in the selected set into new, disjoint sets, with the pixels assigned so as to minimize the differences between their respective color values; continuing the selecting, separating and assigning steps for sets until a total of M sets have been derived; and then assigning to all pixels in each set, a mean color value calculated from all pixel colors in the set.

摘要翻译： 一种用于从数字化彩色图像创建图像中所有像素的树结构划分为M个不相交集合的方法，其中每个集合中的像素具有相似的颜色值，所述方法包括以下步骤：分离和分配所述图像中的所有像素 图像变成不相交集合，以便最小化每组中各个像素颜色值之间的差异; 选择具有分配像素的颜色值的最大变化的集合中的一个，并且将所选集合中的所有像素分离并分配为新的不相交集合，分配所述像素以最小化它们各自的颜色值之间的差异; 继续选择，分离和分配集合步骤，直到导出总共M个集合; 然后分配给每个集合中的所有像素，从集合中的所有像素颜色计算出的平均颜色值。