公开(公告)号：US09007394B2

公开(公告)日：2015-04-14

申请号：US13768009

申请日：2013-02-15

Applicant: Vijay Kumar Kodavalla

Inventor： Vijay Kumar Kodavalla

IPC: G09G5/02 ,  G06T11/00

CPC classification number: G06T11/001 ,  G06T5/009 ,  G06T5/40

Abstract: This disclosure generally relates to digital image and video signal processing, and more particularly to methods and systems for dynamic brightness correction. In one embodiment, an electronic circuit configured to perform an image correction method is disclosed, the method comprising: obtaining a pixel value of a color space component from an image; determining whether to perform mid-tone correction for the pixel value of the color space component; calculating, via the electronic circuit, a corrected pixel value based on the determination of whether to perform the mid-tone correction for the pixel value of the color space component; and outputting the corrected pixel value. The color space component may be one of: an Intensity component from a Hue-Saturation-Intensity color space; a Value component from a Hue-Saturation-Value color space; a Lightness component from a Hue-Saturation-Lightness color space; and a Brightness component from a Hue-Saturation-Brightness color space.

Abstract translation: 本公开一般涉及数字图像和视频信号处理，更具体地涉及用于动态亮度校正的方法和系统。 在一个实施例中，公开了一种被配置为执行图像校正方法的电子电路，所述方法包括：从图像中获得颜色空间分量的像素值; 确定是否对所述颜色空间分量的像素值执行中间色调校正; 基于对所述颜色空间分量的像素值是否执行中间色调校正的确定，经由所述电子电路计算校正像素值; 并输出校正后的像素值。 颜色空间分量可以是以下之一：来自色相饱和度强度色彩空间的强度分量; 来自色相饱和度值色彩空间的值分量; 来自色相饱和度亮度色彩空间的亮度分量; 和来自色相饱和度 - 亮度色彩空间的亮度分量。

公开(公告)号：US20140122962A1

公开(公告)日：2014-05-01

申请号：US13752650

申请日：2013-01-29

Applicant: Vijay Kumar Kodavalla

Inventor： Vijay Kumar Kodavalla

IPC: H03M13/13 ,  H03M13/29

CPC classification number: H03M13/353 ,  G06F11/076 ,  H03M13/1102 ,  H03M13/13 ,  H03M13/2909 ,  H03M13/3746 ,  H03M13/6312 ,  H04N19/136 ,  H04N19/172 ,  H04N19/192 ,  H04N19/89

Abstract: This disclosure generally relates to encoding, transmission, and decoding of digital video, and more particularly to methods and systems for minimizing decoding delay in distributed video coding (DVC). In one embodiment, a video decoding method is disclosed, comprising: obtaining side information; obtaining a syndrome bit chunk corresponding to a non-key-frame bit-plane; performing, via one or more processors, at least one non-key-frame bit-plane channel decoding iteration using the side information and the syndrome bit chunk; generating a decoded bit-plane via performing the at least one non-key-frame bit-plane channel decoding iteration; determining a bit error rate measure for the decoded bit-plane; determining, based on the bit error rate measure, a number of additional syndrome bit chunks to request; and providing a request for the additional syndrome bit chunks.

Abstract translation: 本公开一般涉及数字视频的编码，传输和解码，更具体地涉及用于最小化分布式视频编码（DVC）中解码延迟的方法和系统。 在一个实施例中，公开了一种视频解码方法，包括：获得边信息; 获得对应于非关键帧位平面的校正子位块; 通过一个或多个处理器，使用所述侧面信息和所述综合征位块执行至少一个非关键帧位平面信道解码迭代; 通过执行所述至少一个非关键帧位平面信道解码迭代来生成解码位平面; 确定解码位平面的误码率测量; 基于比特误差率测量确定要请求的多个附加的综合比特块; 并提供对附加综合征位块的请求。

公开(公告)号：US20120200778A1

公开(公告)日：2012-08-09

申请号：US13447342

申请日：2012-04-16

Applicant: Vijay Kumar KODAVALLA ,  Deepak Kumar ARAVAPALLI

Inventor： Vijay Kumar KODAVALLA ,  Deepak Kumar ARAVAPALLI

IPC: H04N9/68

CPC classification number: H04N9/68 ,  G06T5/009 ,  G06T5/40 ,  G06T5/50 ,  G06T2207/10016 ,  G06T2207/10024

Abstract: System and method for dynamically and adaptively enhancing user chosen colors on a frame-by-frame basis of an incoming digital video signal using a saturation gain is disclosed. In one embodiment, a saturation 1D-histogram for each of the user chosen colors is formed using a substantially current video frame. Further, a saturation gain, adaptive to slow or fast moving image sequences, is dynamically computed for each of the user chosen colors of the substantially current video frame using the corresponding saturation 1D-histogram of the substantially current video frame and corresponding saturation 1D-histogram information and a saturation gain of a substantially previous video frame. Furthermore, which one of the dynamically computed saturation gains associated with the user chosen colors to be applied on a per-pixel basis is determined. The determined saturation gain is applied to saturation component on the per-pixel basis in the substantially current or next video frame.

Abstract translation: 公开了一种用于使用饱和增益在输入数字视频信号的逐帧基础上动态地和自适应地增强用户选择的颜色的系统和方法。 在一个实施例中，使用基本上当前的视频帧来形成每个用户选择的颜色的饱和1D直方图。 此外，使用基本上当前视频帧的对应的饱和1D直方图和相应的饱和1D直方图，动态地计算针对基本上当前视频帧的每个用户选择的颜色的适应于慢或快速运动图像序列的饱和增益 信息和基本上先前的视频帧的饱和增益。 此外，确定与以每像素为基础施加的用户选择的颜色相关联的动态计算的饱和增益中的哪一个。 所确定的饱和增益在基本上当前或下一个视频帧中以每像素为基础被施加到饱和分量。