利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

133 条记录 (耗时 0.029 秒)

    System and method using edge processing to remove blocking artifacts from decompressed images
    1.
    发明授权
    System and method using edge processing to remove blocking artifacts from decompressed images 有权
    使用边缘处理从解压缩图像中去除块状伪影的系统和方法

    公开(公告)号：US06798918B2

    公开(公告)日：2004-09-28

    申请号：US10124932

    申请日：2002-04-17

    申请人： Ke-Chiang Chu ,  Jian Lu ,  Yu Tina Tian ,  Hsi-Jung Wu

    发明人： Ke-Chiang Chu ,  Jian Lu ,  Yu Tina Tian ,  Hsi-Jung Wu

    IPC分类号： G06K940

    CPC分类号： G06T9/00 ,  G06T5/002 ,  G06T7/12 ,  G06T2207/10016 ,  G06T2207/20021 ,  H04N19/86

    摘要： A system and method using edge processing to remove blocking artifacts comprises an edge processor having an image converter for building an edge representation of a received image, a statistics analyzer for compiling a histogram containing edge intensities of the edge representation, a reference calculator for using the histogram to compute reference values corresponding to the blocking artifacts and an artifact remover for identifying and removing the blocking artifacts using the computed reference values.

    摘要翻译： 使用边缘处理去除块状伪影的系统和方法包括具有用于构建接收图像的边缘表示的图像转换器的边缘处理器，用于编译包含边缘表示的边缘强度的直方图的统计分析器，用于使用边缘表示的参考计算器 直方图以计算对应于块伪像的参考值，以及伪像去除器，用于使用计算的参考值来识别和去除块伪像。

    Digital image coding system having self-adjusting selection criteria for selecting a transform function
    2.
    发明授权
    Digital image coding system having self-adjusting selection criteria for selecting a transform function 有权
    具有用于选择变换函数的自适应选择标准的数字图像编码系统

    公开(公告)号：US07929778B2

    公开(公告)日：2011-04-19

    申请号：US12538850

    申请日：2009-08-10

    申请人： Hsi-Jung Wu ,  Yu Tina Tian ,  Jian Lu ,  Ke-Chiang Chu

    发明人： Hsi-Jung Wu ,  Yu Tina Tian ,  Jian Lu ,  Ke-Chiang Chu

    IPC分类号： G06K9/36 ,  G06K9/00

    CPC分类号： G06T9/007 ,  H04N19/122 ,  H04N19/132 ,  H04N19/139 ,  H04N19/14 ,  H04N19/154 ,  H04N19/176 ,  H04N19/18 ,  H04N19/196 ,  H04N19/198 ,  H04N19/61

    摘要： In a digital signal processing system, a method for selecting a transform function to apply to an input signal based on characteristics of the signal, and for self-adjusting criteria which are used in selecting a transform function to apply to a subsequent signal. Characteristics are obtained from the signal. The characteristics are compared to adjustable criteria which are used in selecting a transform function. Differing criteria are maintained for the different selectable transform functions. A record is maintained of transform functions selected and the particular characteristics that caused the selection. Based on the ability of a transform function to minimally define the coded signal, an inverse transform function is selected to decode the signal. The criteria used in selecting a transform function to apply to a subsequent signal are adjusted based on a quality measure of the decoded signal and the record of selected transform functions.

    摘要翻译： 在数字信号处理系统中，提供了一种用于根据信号的特性选择适用于输入信号的变换函数的方法，以及用于选择变换函数以应用于后续信号的自调整准则的方法。 从信号获得特性。 将特征与用于选择变换函数的可调标准进行比较。 对于不同的可选变换函数维持不同的标准。 保留所选择的变换函数和导致选择的特定特征的记录。 基于变换函数最小化定义编码信号的能力，选择逆变换函数来对信号进行解码。 基于解码信号的质量测量和所选择的变换函数的记录来调整用于选择应用于后续信号的变换函数的标准。

    Digital image coding system having self-adjusting selection criteria for selecting a transform function
    3.
    发明授权
    Digital image coding system having self-adjusting selection criteria for selecting a transform function 有权
    具有用于选择变换函数的自适应选择标准的数字图像编码系统

    公开(公告)号：US07577306B2

    公开(公告)日：2009-08-18

    申请号：US11436113

    申请日：2006-05-16

    申请人： Hsi-Jung Wu ,  Yu Tina Tian ,  Jian Lu ,  Ke-Chiang Chu

    发明人： Hsi-Jung Wu ,  Yu Tina Tian ,  Jian Lu ,  Ke-Chiang Chu

    IPC分类号： G06K9/36 ,  G06K9/46

    CPC分类号： G06T9/007 ,  H04N19/122 ,  H04N19/132 ,  H04N19/139 ,  H04N19/14 ,  H04N19/154 ,  H04N19/176 ,  H04N19/18 ,  H04N19/196 ,  H04N19/198 ,  H04N19/61

    摘要： In a digital signal processing system, a method for selecting a transform function to apply to an input signal based on characteristics of the signal, and for self-adjusting criteria which are used in selecting a transform function to apply to a subsequent signal. Characteristics are obtained from the signal. The characteristics are compared to adjustable criteria which are used in selecting a transform function. Differing criteria are maintained for the different selectable transform functions. A record is maintained of transform functions selected and the particular characteristics that caused the selection. Based on the ability of a transform function to minimally define the coded signal, an inverse transform function is selected to decode the signal. The criteria used in selecting a transform function to apply to a subsequent signal are adjusted based on a quality measure of the decoded signal and the record of selected transform functions.

    摘要翻译： 在数字信号处理系统中，提供了一种用于根据信号的特性选择适用于输入信号的变换函数的方法，以及用于选择变换函数以应用于后续信号的自调整准则的方法。 从信号获得特性。 将特征与用于选择变换函数的可调标准进行比较。 对于不同的可选变换函数维持不同的标准。 保留所选择的变换函数和导致选择的特定特征的记录。 基于变换函数最小化定义编码信号的能力，选择逆变换函数来对信号进行解码。 基于解码信号的质量测量和所选择的变换函数的记录来调整用于选择应用于后续信号的变换函数的标准。

    System and method for estimating block motion in a video image sequence
    4.
    发明授权
    System and method for estimating block motion in a video image sequence 失效
    用于估计视频图像序列中的块运动的系统和方法

    公开(公告)号：US5812199A

    公开(公告)日：1998-09-22

    申请号：US678102

    申请日：1996-07-11

    申请人： Jian Lu ,  Ke-Chiang Chu ,  Yu Tina Tian ,  Hsi-Jung Wu

    发明人： Jian Lu ,  Ke-Chiang Chu ,  Yu Tina Tian ,  Hsi-Jung Wu

    IPC分类号： G06T7/20 ,  H04N5/14 ,  H04N7/26 ,  H04N7/50 ,  H04N7/36

    CPC分类号： G06T7/2026 ,  H04N19/51 ,  H04N5/145 ,  G06T2207/10016

    摘要： A system for estimating block motion from a previous frame to a current frame, wherein motion vectors have been computed for blocks in the previous frame. The system comprises a P-checkerboard processor, an S-checkerboard processor and a block matching engine. The a P-checkerboard processor selects a first current block from a primary checkerboard pattern, retrieves motion vectors for reference blocks in the previous frame, and uses the retrieved motion vectors to generate a temporal search window. The block matching engine locates in the temporal search window a block which best matches the first current block, and determines the current motion vector from the best matching block to the first current block. Alternatively, the a P-checkerboard processor can use the retrieved motion vectors to interpolate the current motion vector. The S-checkerboard processor selects a second current block from a secondary checkerboard pattern, and uses the current motion vector to generate a spatial dynamic search window. The block matching processor locates in the spatial search window the block which best matches the second current block, and determines the current motion vector from the best matching block to the second current block.

    摘要翻译： 一种用于估计从先前帧到当前帧的块运动的系统，其中已经针对前一帧中的块来计算运动矢量。 该系统包括P棋盘处理器，S棋盘处理器和块匹配引擎。 P棋盘处理器从主棋盘图案中选择第一当前块，检索先前帧中的参考块的运动矢量，并使用所检索的运动矢量来生成时间搜索窗口。 块匹配引擎在时间搜索窗口中定位与第一当前块最匹配的块，并且确定从最佳匹配块到第一当前块的当前运动矢量。 或者，P棋盘处理器可以使用所检索的运动矢量来内插当前运动矢量。 S棋盘处理器从次棋盘图案中选择第二个当前块，并使用当前运动矢量来生成空间动态搜索窗口。 块匹配处理器在空间搜索窗口中定位与第二当前块最匹配的块，并且确定从最佳匹配块到第二当前块的当前运动矢量。

    Digital image coding system having self-adjusting selection criteria for selecting a transform function
    5.
    发明授权
    Digital image coding system having self-adjusting selection criteria for selecting a transform function 有权
    具有用于选择变换函数的自适应选择标准的数字图像编码系统

    公开(公告)号：US06229917B1

    公开(公告)日：2001-05-08

    申请号：US09396084

    申请日：1999-09-14

    申请人： Hsi-Jung Wu ,  Yu Tina Tian ,  Jian Lu ,  Ke-Chiang Chu

    发明人： Hsi-Jung Wu ,  Yu Tina Tian ,  Jian Lu ,  Ke-Chiang Chu

    IPC分类号： G06K900

    CPC分类号： G06T9/007 ,  H04N19/122 ,  H04N19/132 ,  H04N19/139 ,  H04N19/14 ,  H04N19/154 ,  H04N19/176 ,  H04N19/18 ,  H04N19/196 ,  H04N19/198 ,  H04N19/61

    摘要： In a digital signal processing system, a method for selecting a transform function to apply to an input signal based on characteristics of the signal, and for self-adjusting criteria which are used in selecting a transform function to apply to a subsequent signal. Characteristics are obtained from the signal. The characteristics are compared to adjustable criteria which are used in selecting a transform function. Differing criteria are maintained for the different selectable transform functions. A record is maintained of transform functions selected and the particular characteristics that caused the selection. Based on the ability of a transform function to minimally define the coded signal, an inverse transform function is selected to decode the signal. The criteria used in selecting a transform function to apply to a subsequent signal are adjusted based on a quality measure of the decoded signal and the record of selected transform functions.

    摘要翻译： 在数字信号处理系统中，提供了一种用于根据信号的特性选择适用于输入信号的变换函数的方法，以及用于选择变换函数以应用于后续信号的自调整准则的方法。 从信号获得特性。 将特征与用于选择变换函数的可调标准进行比较。 对于不同的可选变换函数维持不同的标准。 保留所选择的变换函数和导致选择的特定特征的记录。 基于变换函数最小化定义编码信号的能力，选择逆变换函数来对信号进行解码。 基于解码信号的质量测量和所选择的变换函数的记录来调整用于选择应用于后续信号的变换函数的标准。

    DIGITAL IMAGE CODING SYSTEM HAVING SELF-ADJUSTING SELECTION CRITERIA FOR SELECTING A TRANSFORM FUNCTION
    9.
    发明申请
    DIGITAL IMAGE CODING SYSTEM HAVING SELF-ADJUSTING SELECTION CRITERIA FOR SELECTING A TRANSFORM FUNCTION 有权
    具有自我调整选择标准的数字图像编码系统，用于选择变换函数

    公开(公告)号：US20100067792A1

    公开(公告)日：2010-03-18

    申请号：US12538850

    申请日：2009-08-10

    申请人： Hsi-Jung Wu ,  Yu Tina Tian ,  Jian Lu ,  Ke-Chiang Chu

    发明人： Hsi-Jung Wu ,  Yu Tina Tian ,  Jian Lu ,  Ke-Chiang Chu

    IPC分类号： G06K9/36 ,  G06K9/38

    CPC分类号： G06T9/007 ,  H04N19/122 ,  H04N19/132 ,  H04N19/139 ,  H04N19/14 ,  H04N19/154 ,  H04N19/176 ,  H04N19/18 ,  H04N19/196 ,  H04N19/198 ,  H04N19/61

    摘要： In a digital signal processing system, a method for selecting a transform function to apply to an input signal based on characteristics of the signal, and for self-adjusting criteria which are used in selecting a transform function to apply to a subsequent signal. Characteristics are obtained from the signal. The characteristics are compared to adjustable criteria which are used in selecting a transform function. Differing criteria are maintained for the different selectable transform functions. A record is maintained of transform functions selected and the particular characteristics that caused the selection. Based on the ability of a transform function to minimally define the coded signal, an inverse transform function is selected to decode the signal. The criteria used in selecting a transform function to apply to a subsequent signal are adjusted based on a quality measure of the decoded signal and the record of selected transform functions.

    摘要翻译： 在数字信号处理系统中，提供了一种用于根据信号的特性选择适用于输入信号的变换函数的方法，以及用于选择变换函数以应用于后续信号的自调整准则的方法。 从信号获得特性。 将特征与用于选择变换函数的可调标准进行比较。 对于不同的可选变换函数维持不同的标准。 保留所选择的变换函数和导致选择的特定特征的记录。 基于变换函数最小化定义编码信号的能力，选择逆变换函数来对信号进行解码。 基于解码信号的质量测量和所选择的变换函数的记录来调整用于选择应用于后续信号的变换函数的标准。