公开(公告)号：US07903733B2

公开(公告)日：2011-03-08

申请号：US11384106

申请日：2006-03-16

申请人： Prasanjit Panda ,  Khaled Helmi El-Maleh ,  Hsiang-Tsun Li

发明人： Prasanjit Panda ,  Khaled Helmi El-Maleh ,  Hsiang-Tsun Li

IPC分类号： H04N7/12

CPC分类号： H04N19/85 ,  H04N19/117 ,  H04N19/136 ,  H04N19/137 ,  H04N19/14 ,  H04N19/149 ,  H04N19/15 ,  H04N19/152 ,  H04N19/157 ,  H04N19/172 ,  H04N19/61 ,  H04N19/80

摘要： This disclosure describes adaptive filtering techniques to improve the quality of captured imagery, such as video or still images. In particular, this disclosure describes adaptive filtering techniques that filter each pixel as a function of a set of surrounding pixels. An adaptive image filter may compare image information associated with a pixel of interest to image information associated with a set of surrounding pixels by, for example, computing differences between the image information associated with the pixel of interest and each of the surrounding pixels of the set. The computed differences can be used in a variety of ways to filter image information of the pixel of interest. In some embodiments, for example, the adaptive image filter may include both a low pass component and high pass component that adjust as a function of the computed differences.

摘要翻译： 本公开描述了自适应滤波技术，以改善所捕获图像的质量，例如视频或静止图像。 特别地，本公开描述了根据一组周围像素来滤除每个像素的自适应滤波技术。 自适应图像滤波器可以通过例如计算与感兴趣像素相关联的图像信息与该组的每个周围像素之间的差异来比较与感兴趣像素相关联的图像信息与与一组周围像素相关联的图像信息 。 计算的差异可以以各种方式用于过滤感兴趣像素的图像信息。 在一些实施例中，例如，自适应图像滤波器可以包括作为所计算的差异的函数调整的低通分量和高通分量两者。

公开(公告)号：US08009963B2

公开(公告)日：2011-08-30

申请号：US11378567

申请日：2006-03-16

申请人： Prasanjit Panda ,  Khaled Helmi El-Maleh ,  Hsiang-Tsun Li

发明人： Prasanjit Panda ,  Khaled Helmi El-Maleh ,  Hsiang-Tsun Li

IPC分类号： H04N9/80 ,  H04N5/78 ,  H04N5/93 ,  H04N5/917 ,  H04N9/65 ,  H04N9/67 ,  H04N9/77 ,  H04N11/02 ,  H04N11/20 ,  G06F17/00 ,  G10L21/04

CPC分类号： H04N19/117 ,  H04N19/14 ,  H04N19/152 ,  H04N19/186 ,  H04N19/85

摘要： This disclosure describes adaptive filtering techniques to improve the quality of captured imagery, such as video or still images. In particular, this disclosure describes adaptive filtering techniques that filter each pixel as a function of a set of surrounding pixels. An adaptive image filter may compare image information associated with a pixel of interest to image information associated with a set of surrounding pixels by, for example, computing differences between the image formation associated with the pixel of interest and each of the surrounding pixels of the set. The computed differences can be used in a variety of ways to filter image information of the pixel of interest. In some embodiments, for example, the adaptive image filter may include both a low pass component and high pass component that adjust as a function of the computed differences.

摘要翻译： 本公开描述了自适应滤波技术，以改善所捕获图像的质量，例如视频或静止图像。 特别地，本公开描述了根据一组周围像素来滤除每个像素的自适应滤波技术。 自适应图像滤波器可以通过例如计算与感兴趣像素相关联的图像形成与该组的每个周围像素之间的差异来比较与感兴趣像素相关联的图像信息与与一组周围像素相关联的图像信息 。 计算的差异可以以各种方式用于过滤感兴趣像素的图像信息。 在一些实施例中，例如，自适应图像滤波器可以包括作为所计算的差异的函数调整的低通分量和高通分量两者。

公开(公告)号：US20070139411A1

公开(公告)日：2007-06-21

申请号：US11705128

申请日：2007-02-12

申请人： Bjorn Jawerth ,  Do Chung ,  Prasanjit Panda ,  Johan Rade ,  Jiangying Zhou

发明人： Bjorn Jawerth ,  Do Chung ,  Prasanjit Panda ,  Johan Rade ,  Jiangying Zhou

IPC分类号： G06T11/20

CPC分类号： G06T9/20 ,  G06T9/00 ,  G06T11/203 ,  G09G2340/145 ,  H04N19/00

摘要： Embodiments of the present invention comprise a method for transmitting map data, a method for displaying map data, a system for processing and displaying map data, and a method for rendering line segments on a pixel display. A preferred method for transmitting map data comprises receiving, layering, and simplifying map data and transmitting some of the simplified data. A preferred method for displaying map data comprises receiving compressed map data, decompressing the received data, and rendering the decompressed data on a display device. A preferred system for processing and displaying map data comprises a map database, a map generation sub-system, a map rendering sub-system, and a display device. A preferred method for rendering line segments on a pixel display comprises, for a line segment from a first endpoint to a second endpoint, rounding off the slope of the line segment and calculating pixel locations based on that rounded off slope.

摘要翻译： 本发明的实施例包括用于发送地图数据的方法，用于显示地图数据的方法，用于处理和显示地图数据的系统，以及用于在像素显示上渲染线段的方法。 用于发送地图数据的优选方法包括接收，分层和简化地图数据并发送一些简化数据。 用于显示地图数据的优选方法包括：接收压缩地图数据，解压缩所接收的数据，以及将解压缩数据呈现在显示设备上。 用于处理和显示地图数据的优选系统包括地图数据库，地图生成子系统，地图绘制子系统和显示设备。 用于在像素显示器上渲染线段的优选方法包括对于从第一端点到第二端点的线段，舍入线段的斜率并基于舍入斜率计算像素位置。

公开(公告)号：US20070172211A1

公开(公告)日：2007-07-26

申请号：US11378567

申请日：2006-03-16

申请人： Prasanjit Panda ,  Khaled El-Maleh ,  Hsiang-Tsun Li

发明人： Prasanjit Panda ,  Khaled El-Maleh ,  Hsiang-Tsun Li

IPC分类号： H04N7/26

CPC分类号： H04N19/117 ,  H04N19/14 ,  H04N19/152 ,  H04N19/186 ,  H04N19/85

摘要： This disclosure describes adaptive filtering techniques to improve the quality of captured imagery, such as video or still images. In particular, this disclosure describes adaptive filtering techniques that filter each pixel as a function of a set of surrounding pixels. An adaptive image filter may compare image information associated with a pixel of interest to image information associated with a set of surrounding pixels by, for example, computing differences between the image formation associated with the pixel of interest and each of the surrounding pixels of the set. The computed differences can be used in a variety of ways to filter image information of the pixel of interest. In some embodiments, for example, the adaptive image filter may include both a low pass component and high pass component that adjust as a function of the computed differences.

摘要翻译： 本公开描述了自适应滤波技术，以改善所捕获图像的质量，例如视频或静止图像。 特别地，本公开描述了根据一组周围像素来滤除每个像素的自适应滤波技术。 自适应图像滤波器可以通过例如计算与感兴趣像素相关联的图像形成与该组的每个周围像素之间的差异来比较与感兴趣像素相关联的图像信息与与一组周围像素相关联的图像信息 。 计算的差异可以以各种方式用于过滤感兴趣像素的图像信息。 在一些实施例中，例如，自适应图像滤波器可以包括作为所计算的差异的函数调整的低通分量和高通分量两者。

公开(公告)号：US20060114989A1

公开(公告)日：2006-06-01

申请号：US11077697

申请日：2005-03-10

申请人： Prasanjit Panda

发明人： Prasanjit Panda

IPC分类号： H04N11/04 ,  H04B1/66 ,  H04N11/02 ,  H04N7/12

CPC分类号： H04N19/192 ,  H04N19/124 ,  H04N19/14 ,  H04N19/149 ,  H04N19/172 ,  H04N19/176

摘要： This disclosure describes rate control techniques that can improve video encoding. The described rate control techniques exploit relationships between the number of bits encoded per frame and the number of non-zero coefficients of the video blocks after quantization. The number of number of non-zero coefficients of the video blocks after quantization is referred to as rho (ρ). The value of ρ is generally proportional to the number of bits used in the video encoding. This disclosure utilizes a relationship between ρ and a quantization parameter (QP) in order to achieve rate controlled video encoding. More specifically, this disclosure exploits a parametric equation to map a value of a predicted ρ to a QP.

摘要翻译： 本公开描述了可以改进视频编码的速率控制技术。 所描述的速率控制技术利用每帧编码的位数与量化后的视频块的非零系数的数目之间的关系。 将量化后的视频块的非零系数的个数称为rho（rho）。 rho的值通常与视频编码中使用的比特数成比例。 本公开利用rho和量化参数（QP）之间的关系，以便实现速率控制的视频编码。 更具体地，本公开利用参数方程来将预测的rho的值映射到QP。

公开(公告)号：US08340172B2

公开(公告)日：2012-12-25

申请号：US11077697

申请日：2005-03-10

申请人： Prasanjit Panda

发明人： Prasanjit Panda

IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N11/04

CPC分类号： H04N19/192 ,  H04N19/124 ,  H04N19/14 ,  H04N19/149 ,  H04N19/172 ,  H04N19/176

摘要： This disclosure describes rate control techniques that can improve video encoding. The described rate control techniques exploit relationships between the number of bits encoded per frame and the number of non-zero coefficients of the video blocks after quantization. The number of number of non-zero coefficients of the video blocks after quantization is referred to as rho (ρ). The value of ρ is generally proportional to the number of bits used in the video encoding. This disclosure utilizes a relationship between ρ and a quantization parameter (QP) in order to achieve rate controlled video encoding. More specifically, this disclosure exploits a parametric equation to map a value of a predicted ρ to a QP.

摘要翻译： 本公开描述了可以改进视频编码的速率控制技术。 所描述的速率控制技术利用每帧编码的位数与量化后的视频块的非零系数的数目之间的关系。 量化后的视频块的非零系数的数量被称为rho（＆rgr;）。 ＆rgr; 通常与视频编码中使用的比特数成比例。 本公开使用“ 和量化参数（QP），以便实现速率控制的视频编码。 更具体地，本公开利用参数方程来映射预测的＆rgr; 到一个QP。

公开(公告)号：US20070171988A1

公开(公告)日：2007-07-26

申请号：US11384106

申请日：2006-03-16

申请人： Prasanjit Panda ,  Khaled El-Maleh ,  Hsiang-Tsun Li

发明人： Prasanjit Panda ,  Khaled El-Maleh ,  Hsiang-Tsun Li

IPC分类号： H04B1/66

CPC分类号： H04N19/85 ,  H04N19/117 ,  H04N19/136 ,  H04N19/137 ,  H04N19/14 ,  H04N19/149 ,  H04N19/15 ,  H04N19/152 ,  H04N19/157 ,  H04N19/172 ,  H04N19/61 ,  H04N19/80

摘要： This disclosure describes adaptive filtering techniques to improve the quality of captured imagery, such as video or still images. In particular, this disclosure describes adaptive filtering techniques that filter each pixel as a function of a set of surrounding pixels. An adaptive image filter may compare image information associated with a pixel of interest to image information associated with a set of surrounding pixels by, for example, computing differences between the image information associated with the pixel of interest and each of the surrounding pixels of the set. The computed differences can be used in a variety of ways to filter image information of the pixel of interest. In some embodiments, for example, the adaptive image filter may include both a low pass component and high pass component that adjust as a function of the computed differences.

摘要翻译： 本公开描述了自适应滤波技术，以改善所捕获图像的质量，例如视频或静止图像。 特别地，本公开描述了根据一组周围像素来滤除每个像素的自适应滤波技术。 自适应图像滤波器可以通过例如计算与感兴趣像素相关联的图像信息与该组的每个周围像素之间的差异来比较与感兴趣像素相关联的图像信息与与一组周围像素相关联的图像信息 。 计算的差异可以以各种方式用于过滤感兴趣像素的图像信息。 在一些实施例中，例如，自适应图像滤波器可以包括作为所计算的差异的函数调整的低通分量和高通分量两者。