公开(公告)号：US08498493B1

公开(公告)日：2013-07-30

申请号：US12477012

申请日：2009-06-02

Applicant: Saif Choudhary

Inventor： Saif Choudhary

IPC: G06K9/46

CPC classification number: H04N19/513 ,  H04N19/52 ,  H04N19/523 ,  H04N19/533

Abstract: A system and method for determining a preferred motion vector is provided, which may be used to estimate motion in a series of video image frames. The system may include a video encoder having a motion vector selector. The motion vector selector may include a first generator to generate a cost associated with motion vectors in a first direction, a selector to set a cross over point corresponding to a lowest cost motion vector in the first direction, a direction indicator to sample a set of motion vectors about the cross over point to select a preferred direction, and a second generator to generate a cost associated with the motion vectors in the preferred direction. The method may include determining a final motion vector having the lowest cost within a search window.

公开(公告)号：US08498334B1

公开(公告)日：2013-07-30

申请号：US12699799

申请日：2010-02-03

Applicant: Saif Choudhary

Inventor： Saif Choudhary

IPC: H04B1/66 ,  G06K9/46

CPC classification number: H04N19/436 ,  H04N19/00 ,  H04N19/44

Abstract: A method and system for staggered parallelized video decoding system decodes a compressed video stream at approximately double the performance of conventional systems, and outputs the decoded stream to a video display device. Even and odd video frames from the video stream are identified and stored in a memory. A first decoder processes a first portion of a first even frame from among the stored even frames. After the first decoder completes processing the first portion of the first even frame, a second decoder begins processing a first odd frame from among the stored odd frames. The processing start times of the odd frames are staggered with respect to the even frames and vice versa, and the even and odd frames are simultaneously processed using first and second decoders.

公开(公告)号：US07154509B2

公开(公告)日：2006-12-26

申请号：US10890077

申请日：2004-07-12

Applicant: Hari Nair ,  Neha Agrawal ,  Saif Choudhary ,  Shashi Kumar ,  Arun Johary

Inventor： Hari Nair ,  Neha Agrawal ,  Saif Choudhary ,  Shashi Kumar ,  Arun Johary

IPC: G09G5/02

CPC classification number: G09G5/02

Abstract: An apparatus and method for allowing color adjustments in display devices is disclosed The apparatus comprises a multi-resolution structure for providing color adjustments; and an interpolator for interpolating at least one offset of the multi-resolution structure. An apparatus and method in accordance with the present invention uses a combination of color look-up tables with different levels of resolution, followed by interpolation to provide a display process which has high resolution but utilizes minimal memory. In so doing, memory is used for high-resolution areas only where needed. The multi-resolution structure is a very good approximation to the theoretical mapping table in the areas where it is needed. At the same time, since the high resolution areas are localized, a significant reduction in memory storage is possible.

Abstract translation: 公开了一种用于在显示装置中进行颜色调整的装置和方法。该装置包括用于提供颜色调整的多分辨率结构; 以及用于内插所述多分辨率结构的至少一个偏移的内插器。 根据本发明的装置和方法使用具有不同分辨率水平的颜色查找表的组合，随后进行插值以提供具有高分辨率但利用最小存储器的显示处理。 在这样做的时候，内存仅用于需要的高分辨率区域。 多分辨率结构对于需要的领域的理论映射表是非常好的近似。 同时，由于高分辨率区域是局部化的，因此存储器存储的显着减少是可能的。

公开(公告)号：US07046252B2

公开(公告)日：2006-05-16

申请号：US10810137

申请日：2004-03-26

Applicant: Hari Nair ,  Neha Agrawal ,  Saif Choudhary ,  Ashish Neema ,  Arun Johary

Inventor： Hari Nair ,  Neha Agrawal ,  Saif Choudhary ,  Ashish Neema ,  Arun Johary

IPC: G09G5/02

CPC classification number: G09G5/06 ,  G09G2320/066 ,  G09G2320/0666

Abstract: A method and apparatus that allows a display device to adaptively and automatically control display contrast and color is disclosed. The method and system in accordance with the present invention can be described by the following sequential process: 1. Separating an input image data value into its luma and chroma components. 2. Collecting the luma distribution data over the entire image or a specified window. 3. Analyzing the luma distribution. 4. Generating an appropriate contrast control response that modifies the input luma component to generate an output luma component, on a pixel by pixel basis. 5. Analyzing the input luma component and the output luma component, and an input chroma component, to generate an appropriate modification for the chroma component, on a pixel by pixel basis.

Abstract translation: 公开了允许显示设备自适应地且自动地控制显示对比度和颜色的方法和装置。 根据本发明的方法和系统可以通过以下顺序过程来描述：1.将输入图像数据值分离成其亮度和色度分量。 2.在整个图像或指定的窗口上收集亮度分布数据。 3.分析亮度分布。 4.产生适当的对比度控制响应，其修改输入亮度分量以逐个像素地生成输出亮度分量。 5.分析输入亮度分量和输出亮度分量以及输入色度分量，以逐像素为基础为色度分量生成适当的修改。

公开(公告)号：US06833839B2

公开(公告)日：2004-12-21

申请号：US10146257

申请日：2002-05-13

Applicant: Hari Nair ,  Neha Agrawal ,  Saif Choudhary ,  Shashi Kumar ,  Arun Johary

Inventor： Hari Nair ,  Neha Agrawal ,  Saif Choudhary ,  Shashi Kumar ,  Arun Johary

IPC: G09G500

CPC classification number: G09G5/02

Abstract: An apparatus and method for allowing color adjustments in display devices is disclosed The apparatus comprises a multi-resolution structure for providing color adjustments; and an interpolator for interpolating at least one offset of the multi-resolution structure. An apparatus and method in accordance with the present invention uses a combination of color look-up tables with different levels of resolution, followed by interpolation to provide a display process which has high resolution but utilizes minimal memory. In so doing, memory is used for high-resolution areas only where needed. The multi-resolution structure is a very good approximation to the theoretical mapping table in the areas where it is needed. At the same time, since the high resolution areas are localized, a significant reduction in memory storage is possible.

公开(公告)号：US07034843B2

公开(公告)日：2006-04-25

申请号：US10849537

申请日：2004-05-18

Applicant: Hari N. Nair ,  Neha Agrawal ,  Saif Choudhary ,  Ashish Neema ,  Arun Johary

Inventor： Hari N. Nair ,  Neha Agrawal ,  Saif Choudhary ,  Ashish Neema ,  Arun Johary

IPC: G09G5/02

CPC classification number: G09G5/06 ,  G09G2320/066 ,  G09G2320/0666

Abstract: Automatically and adaptively controlling contrast and color of a display device by computing a normalized histogram of a current image, computing degrees of correlation between the normalized histogram and a number of template histograms, sorting the template histograms based upon the associated degrees of correlation, selecting a number of the best correlated template histograms based on the sorting, blending the selected the transfer functions associated with the selected template histograms to form a blended transfer function, and applying the blended transfer function to the current image.

Abstract translation: 通过计算当前图像的归一化直方图，自动和自适应地控制显示设备的对比度和颜色，计算归一化直方图与多个模板直方图之间的相关度，基于相关联的相关度排序模板直方图，选择 基于排序的最佳相关模板直方图的数量，混合所选择的与所选模板直方图相关联的传递函数以形成混合传递函数，以及将混合传递函数应用于当前图像。

公开(公告)号：US20050035974A1

公开(公告)日：2005-02-17

申请号：US10849537

申请日：2004-05-18

Applicant: Hari Nair ,  Neha Agrawal ,  Saif Choudhary ,  Ashish Neema ,  Arun Johary

Inventor： Hari Nair ,  Neha Agrawal ,  Saif Choudhary ,  Ashish Neema ,  Arun Johary

IPC: G09G5/06 ,  G09G5/02

CPC classification number: G09G5/06 ,  G09G2320/066 ,  G09G2320/0666

Abstract: Automatically and adaptively controlling contrast and color of a display device by computing a normalized histogram of a current image, computing degrees of correlation between the normalized histogram and a number of template histograms, sorting the template histograms based upon the associated degrees of correlation, selecting a number of the best correlated template histograms based on the sorting, blending the selected the transfer functions associated with the selected template histograms to form a blended transfer function, and applying the blended transfer function to the current image.

Abstract translation: 通过计算当前图像的归一化直方图，自动和自适应地控制显示设备的对比度和颜色，计算归一化直方图与多个模板直方图之间的相关度，基于相关联的相关度排序模板直方图，选择 基于排序的最佳相关模板直方图的数量，混合所选择的与所选模板直方图相关联的传递函数以形成混合传递函数，以及将混合传递函数应用于当前图像。

公开(公告)号：US08922573B1

公开(公告)日：2014-12-30

申请号：US12502927

申请日：2009-07-14

Applicant: Saif Choudhary

Inventor： Saif Choudhary

IPC: G09G5/36 ,  G09G5/39 ,  G06F12/02

CPC classification number: G09G5/399 ,  G06T1/60 ,  G09G2320/106 ,  G09G2340/02 ,  G09G2360/122

Abstract: A non-buffered video line memory eliminates the need for double buffering video data during processing. While most double buffering systems double the amount of memory necessary to store video data, a non-buffered approach reduces the hardware memory costs substantially. A set of write and read pointers coupled with write and read incrementors allows data to be stored in raster order and removed in block order from a non-buffered memory device. The incrementors, in conjunction with a set of write and read pointers generate a base address for data to be written to and read from the non-buffered memory at substantially the same time. Encoding systems benefit substantially by being able to read and write information into a common memory rather than continuously switching between two different memories, by reducing complexity and cost.

Abstract translation: 非缓冲视频行存储器消除了在处理期间双缓冲视频数据的需要。 虽然大多数双缓冲系统将存储视频数据所需的内存量增加一倍，但非缓冲方法大大降低了硬件内存成本。 与写入和读取增量器耦合的一组写入和读取指针允许以光栅顺序存储数据，并以块顺序从非缓冲存储器件中移除数据。 增量器与一组写入和读取指针结合在一起基本上同时生成要从非缓冲存储器写入和读取的数据的基址。 编码系统通过能够通过降低复杂性和成本而将信息读取和写入公共存储器而不是不断地在两个不同存储器之间切换而受益匪浅。

公开(公告)号：US06778183B1

公开(公告)日：2004-08-17

申请号：US10193348

申请日：2002-07-10

Applicant: Hari Nair ,  Neha Agrawal ,  Saif Choudhary ,  Ashish Neema ,  Arun Johary

Inventor： Hari Nair ,  Neha Agrawal ,  Saif Choudhary ,  Ashish Neema ,  Arun Johary

IPC: G09G502

CPC classification number: G09G5/06 ,  G09G2320/066 ,  G09G2320/0666

Abstract: A method and apparatus that allows a display device to adaptively and automatically control display contrast and color is disclosed. The method and system in accordance with the present invention can be described by the following sequential process: 1. Separating an input image data value into its luma and chroma components. 2. Collecting the luma distribution data over the entire image or a specified window. 3. Analyzing the luma distribution. 4. Generating an appropriate contrast control response that modifies the input luma component to generate an output luma component, on a pixel by pixel basis. 5. Analyzing the input luma component and the output luma component, and an input chroma component, to generate an appropriate modification for the chroma component, on a pixel by pixel basis.

Abstract translation: 公开了允许显示设备自适应地且自动地控制显示对比度和颜色的方法和装置。 根据本发明的方法和系统可以通过以下顺序的过程来描述：1。 将输入图像数据值分离为其亮度和色度分量。 在整个图像或指定的窗口上收集亮度分布数据。 分析亮度分布。 生成适当的对比度控制响应，修改输入亮度分量以逐个像素地生成输出亮度分量。 分析输入亮度分量和输出亮度分量以及输入色度分量，以逐个像素为基础生成色度分量的适当修改。