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1. 发明授权

US09007395B2 Bit resolution enhancement 有权
标题翻译：位分辨率增强
公开(公告)号：US09007395B2
公开(公告)日：2015-04-14
申请号：US12615594
申请日：2009-11-10
申请人： Vasudev Bhaskaran , Nikhil Balram , Sujith Srinivasan , Sanjay Garg
发明人： Vasudev Bhaskaran , Nikhil Balram , Sujith Srinivasan , Sanjay Garg
IPC分类号： G09G5/02 , G09G5/00 , G06K9/46 , G06K9/48 , G06K9/62 , G06K9/40 , G06K9/32 , H04N5/00 , H04N9/77 , G06T5/00 , G06T3/40
CPC分类号： G06T5/002 , G06T3/403 , G06T2207/10016 , G06T2207/20012
摘要： Devices, systems, apparatuses, methods, and other embodiments associated with bit resolution enhancement are described. In one embodiment, an apparatus includes logic configured to produce a high-resolution pixel from a low-resolution pixel. The apparatus includes logic configured to classify the high-resolution pixel as being in a smooth region of an image based on at least one of a gradient value and a variance value associated with the low-resolution pixel. The apparatus includes logic configured to selectively re-classify the high-resolution pixel as not being in the smooth region of the image based on a set of neighboring high-resolution pixels associated with high-resolution pixel. The apparatus includes logic configured to selectively filter the high-resolution pixel based on whether the high-resolution pixel remains classified as being in the smooth region of the image.
摘要翻译：描述了与比特分辨率增强相关联的设备，系统，设备，方法和其他实施例。在一个实施例中，一种装置包括被配置为从低分辨率像素产生高分辨率像素的逻辑。该装置包括被配置为基于与低分辨率像素相关联的梯度值和方差值中的至少一个将高分辨率像素分类为图像的平滑区域的逻辑。该装置包括配置成基于与高分辨率像素相关联的一组相邻高分辨率像素，将高分辨率像素选择性地重新分类为不在图像的平滑区域中的逻辑。该装置包括被配置为基于高分辨率像素是否保持分类为处于图像的平滑区域来选择性地过滤高分辨率像素的逻辑。

2. 发明申请

US20130251281A1 IMAGE ENHANCEMENT 有权
标题翻译：图像增强
公开(公告)号：US20130251281A1
公开(公告)日：2013-09-26
申请号：US13427167
申请日：2012-03-22
申请人： Vasudev Bhaskaran
发明人： Vasudev Bhaskaran
IPC分类号： G06K9/40
CPC分类号： G06T5/002 , G06T2207/10028 , G06T2207/20012
摘要： Techniques described in the disclosure are generally related to enhancing portions of an image relative to other portions of the image. The example techniques may utilize depth information in conjunction with one or more viewer perceivable information to enhance portions of the image relative to other portions. The techniques may then display the enhanced image to provide the viewer with a possibly more realistic image.
摘要翻译：本公开中描述的技术通常涉及相对于图像的其他部分增强图像的部分。该示例技术可以结合一个或多个观看者可感知信息利用深度信息，以增强图像相对于其他部分的部分。然后，技术可以显示增强图像以向观看者提供可能更逼真的图像。

3. 发明申请

US20100295767A1 LIQUID CRYSTAL DISPLAY BACKLIGHT CONTROL 有权
标题翻译：液晶显示背光控制
公开(公告)号：US20100295767A1
公开(公告)日：2010-11-25
申请号：US12783123
申请日：2010-05-19
申请人： Wonbok Lee , Vasudev Bhaskaran , Mainak Biswas , Nikhil Balram
发明人： Wonbok Lee , Vasudev Bhaskaran , Mainak Biswas , Nikhil Balram
IPC分类号： G09G3/36
CPC分类号： G09G3/3607 , G09G3/3426 , G09G3/3611 , G09G2320/0238 , G09G2320/0261 , G09G2320/064 , G09G2320/066 , G09G2320/10 , G09G2360/145 , G09G2360/16
摘要： To improve contrast ratio of the image on a backlit display plane such as a liquid crystal display (“LCD”), each area of the image that has separately controllable backlight may be given full backlight until an average or composite brightness of the image in that area is less than a threshold value at which light leakage through the image from full-strength backlight begins to be noticable by a viewer. For image areas with composite brightness less than that threshold, backlight brightness may be reduced in proportion to how much below the threshold the area's composite image brightness is. Backlight brightness may also be adjusted for other image aspects such as (1) the presence of bright pixels in an otherwise relatively dark area, (2) whether the area is adjacent to one or more other areas in which the image information is in motion, and/or (3) time-averaging of image information over several successive frames of such information.
摘要翻译：为了提高诸如液晶显示器（“LCD”）的背光显示平面上的图像的对比度，具有单独可控制的背光的图像的每个区域可以被赋予完全的背光，直到该图像的平均或复合亮度面积小于通过来自全强度背光的图像的光泄漏开始由观察者显而易见的阈值。对于具有小于该阈值的复合亮度的图像区域，背光亮度可以与区域的合成图像亮度的阈值以下多少成正比。也可以针对其他图像方面调整背光亮度，例如（1）在相对较暗的区域中存在亮像素，（2）该区域是否与图像信息在其中运动的一个或多个其它区域相邻，和/或（3）在这些信息的几个连续帧上的图像信息的时间平均。

4. 发明申请

US20100265334A1 AUTOMATIC ADJUSTMENTS FOR VIDEO POST-PROCESSOR BASED ON ESTIMATED QUALITY OF INTERNET VIDEO CONTENT 有权
标题翻译：基于互联网视频内容的估计质量的视频后处理器的自动调整
公开(公告)号：US20100265334A1
公开(公告)日：2010-10-21
申请号：US12764214
申请日：2010-04-21
申请人： Vasudev Bhaskaran , Mainak Biswas , Nikhil Balram
发明人： Vasudev Bhaskaran , Mainak Biswas , Nikhil Balram
IPC分类号： H04N17/00
CPC分类号： H04N19/117 , G06T7/0002 , G06T2207/10016 , G06T2207/20004 , H04L65/80 , H04N5/4401 , H04N19/154 , H04N19/59 , H04N19/61 , H04N19/80 , H04N19/85 , H04N19/86 , H04N21/426 , H04N21/4332 , H04N21/4348 , H04N21/4382 , H04N21/44 , H04N21/44209 , H04N21/4425 , H04N21/485 , H04N21/6125 , H04N21/84
摘要： A system including a quality estimation module configured to estimate a visual quality of video content based on data from a decoder module. The system further including a settings database configured to store a plurality of predetermined settings. The settings database outputs at least one of the predetermined settings in response to the visual quality. The system further including a video post-processor module configured to automatically adjust settings of the video post-processor module based on the at least one of the predetermined settings. The video content is processed based on the settings of the video post-processor module that were automatically adjusted.
摘要翻译：一种包括质量估计模块的系统，其被配置为基于来自解码器模块的数据来估计视频内容的视觉质量。该系统还包括配置为存储多个预定设置的设置数据库。设置数据库响应于视觉质量输出至少一个预定设置。该系统还包括视频后处理器模块，该视频后处理器模块被配置为基于至少一个预定设置来自动调整视频后处理器模块的设置。视频内容根据自动调整的视频后处理器模块的设置进行处理。

5. 发明申请

US20070140338A1 Macroblock homogeneity analysis and inter mode prediction 有权
标题翻译：宏块均匀性分析和帧间模式预测
公开(公告)号：US20070140338A1
公开(公告)日：2007-06-21
申请号：US11305927
申请日：2005-12-19
申请人： Vasudev Bhaskaran , Norihisa Hagiwara , William Chen , Changick Kim
发明人： Vasudev Bhaskaran , Norihisa Hagiwara , William Chen , Changick Kim
IPC分类号： H04N7/12 , H04N11/04
CPC分类号： H04N19/567 , H04N19/132 , H04N19/136 , H04N19/147 , H04N19/19 , H04N19/51 , H04N19/523
摘要： An inter mode for encoding a video macroblock is selected. An initial analysis on the macroblock homogeneity is performed to quickly reduce the number of inter modes for which motion estimation and rate distortion calculation are to be performed. An inter mode is selected based on these calculations and sub-pixel motion estimation, at various sub-pixel interpolation granularities, is performed only on the selected inter mode. Sub-pixel motion estimation may be skipped for macroblocks that exhibit relatively low distortion at the integer pixel level.
摘要翻译：选择用于编码视频宏块的帧间模式。执行对宏块均匀性的初步分析，以快速减少要执行运动估计和速率失真计算的帧间模式的数量。基于这些计算选择帧间模式，并且仅在所选择的帧间模式下执行各种子像素内插粒度的子像素运动估计。对于在整数像素级显示相对较低失真的宏块，可以跳过子像素运动估计。

6. 发明申请

US20070098086A1 Spatio-temporal noise filter for digital video 审中-公开
标题翻译：数字视频的时空噪声滤波器
公开(公告)号：US20070098086A1
公开(公告)日：2007-05-03
申请号：US11261042
申请日：2005-10-28
申请人： Vasudev Bhaskaran
发明人： Vasudev Bhaskaran
IPC分类号： H04B1/66
CPC分类号： G06T5/002 , G06T5/20 , G06T5/50 , G06T2207/10016 , G06T2207/20182 , G06T2207/20192 , H04N19/80
摘要： A three-dimensional filter that addresses various types of noise is described. This filter uses both spatial and temporal characteristics of the video signal in the filtering process. Additionally, the filter is able to maintain edge fidelity within in images in the video signal.
摘要翻译：描述了解决各种噪声的三维滤波器。该滤波器在滤波过程中使用视频信号的空间和时间特性。此外，滤波器能够保持视频信号中的图像内的边缘保真度。

7. 发明授权

US07212571B2 Method and apparatus for DCT domain filtering for block based encoding 有权
标题翻译：用于基于块的编码的DCT域滤波的方法和装置
公开(公告)号：US07212571B2
公开(公告)日：2007-05-01
申请号：US10355469
申请日：2003-01-31
申请人： Vasudev Bhaskaran , Changick Kim
发明人： Vasudev Bhaskaran , Changick Kim
IPC分类号： H04N7/18
CPC分类号： H04N19/86 , H04N19/124 , H04N19/132 , H04N19/14 , H04N19/176 , H04N19/18 , H04N19/194 , H04N19/61
摘要： A method for encoding video data to reduce blocking artifacts is provided. The method initiates with identifying a macro-block as being associated with a blocking artifact. For example the macro-block may be identified as a low activity macro-block or a high activity macro-block. Then, blocking artifacts introduced through a compression operation are mitigated by adjusting both a quantization parameter and an amount of bits generated from the quantization parameter. A video encoder and a system for processing image data associated with block based compression are provided.
摘要翻译：提供了一种用于编码视频数据以减少块伪影的方法。该方法启动，将宏块识别为与块工件相关联。例如，宏块可以被识别为低活动宏块或高活动宏块。然后，通过调整量化参数和从量化参数产生的位数来减轻通过压缩操作引入的块伪影。提供了一种用于处理与基于块的压缩相关联的图像数据的视频编码器和系统。

8. 发明申请

US20070047842A1 Interactive photo system 有权
标题翻译：互动照片系统
公开(公告)号：US20070047842A1
公开(公告)日：2007-03-01
申请号：US11214255
申请日：2005-08-29
申请人： Vasudev Bhaskaran , William Chen
发明人： Vasudev Bhaskaran , William Chen
IPC分类号： G06K9/54
CPC分类号： G06F17/30247 , G06T5/50 , Y10S707/99945 , Y10S707/99948
摘要： An interactive photo system that provides an interesting and entertaining way to link photos from the digital and analog domains. The system enables easy conversion of a paper-based photo into digital form. The conversion process generally involves a user holding up a paper-based photo image in front of a camera of the system, such that the captured image is rendered in a specific location on a display screen. The system adjusts the captured image for orientation and illumination irregularities in creating a digital version of the paper-based photo. The system further includes a database of digital images and a content retrieval engine to which content from the just-converted digital image can be used as a search query to search the database for other similar digital photos.
摘要翻译：交互式照片系统，提供有趣和有趣的方式来链接数字和模拟域的照片。该系统可轻松将基于纸张的照片转换为数字形式。转换过程通常涉及用户在系统的相机前面保持基于纸张的照片图像，使得捕获的图像被呈现在显示屏幕上的特定位置。在创建基于纸张的照片的数字版本时，系统会调整捕获的图像以获取方向和照明不规则。该系统还包括数字图像的数据库和内容检索引擎，来自刚刚转换的数字图像的内容可以用作搜索查询以在数据库中搜索其他类似的数字照片。

9. 发明授权

US06950473B2 Hybrid technique for reducing blocking and ringing artifacts in low-bit-rate coding 有权
标题翻译：用于减少低比特率编码中的阻塞和振铃伪影的混合技术
公开(公告)号：US06950473B2
公开(公告)日：2005-09-27
申请号：US10176994
申请日：2002-06-21
申请人： Changick Kim , William Chen , Vasudev Bhaskaran
发明人： Changick Kim , William Chen , Vasudev Bhaskaran
IPC分类号： H04N7/26 , H04N7/30 , H04N7/12
CPC分类号： H04N19/86
摘要： A power-scalable hybrid technique to reduce blocking and ringing artifacts in low bit-rate block-based video coding is employed in connection with a modified decoder structure. Fast inverse motion compensation is applied directly in the compressed domain, so that the transform (e.g., DCT) coefficients of the current frame can be reconstructed from those of the previous frame. The spatial characteristics of each block is calculated from the DCT coefficients, and each block is classified as either low-activity or high-activity. For each low-activity block, its DC coefficient value and the DC coefficient values of the surrounding eight neighbor blocks are exploited to predict low frequency AC coefficients which reflect the original coefficients before quantization in the encoding stage. The predicted AC coefficients are inserted into the low activity blocks where blocking artifacts are most noticeable. Subject to available resources, this may be followed by spatial domain post-processing, in which two kinds of low-pass filters are adaptively applied, on a block-by-block basis, according to the classification of the particular block. Strong low-pass filtering is applied in low-activity blocks where the blocking artifacts are most noticeable, whereas weak low-pass filtering is applied in high-activity blocks where ringing noise as well as blocking artifacts may exist. In low activity blocks, the blocking artifacts are reduced by one dimensional horizontal and vertical low-pass filters which are selectively applied in either the horizontal and/or vertical direction depending on the locations and absolute values of the predicted AC coefficients. In high activity blocks, de-blocking and de-ringing is conducted by 2- or 3-tap filters, applied horizontally and/or vertically, which makes the architecture simple.
摘要翻译：结合经修改的解码器结构采用功率可扩展的混合技术来减少低比特率基于块的视频编码中的阻塞和振铃伪影。快速逆运动补偿直接应用在压缩域中，使得当前帧的变换（例如DCT）系数可以从先前帧的变换（例如，DCT）系数重构。根据DCT系数计算每个块的空间特性，将每个块分类为低活动度或高活动度。对于每个低活动块，利用其DC系数值和周围八个相邻块的DC系数值来预测在编码阶段中反映量化之前的原始系数的低频AC系数。将预测的AC系数插入到低活动块中，其中块伪影最显着。根据可用资源，可以跟随空间域后处理，其中根据特定块的分类，在逐块的基础上自适应地应用两种低通滤波器。强低通滤波被应用在低活动性块中，其中块伪影是最显着的，而弱低通滤波被应用于可能存在振铃噪声和块伪影的高活动块中。在低活动性块中，根据预测的AC系数的位置和绝对值，在水平和/或垂直方向选择性地施加一维水平和垂直低通滤波器来减少块伪影。在高活动性块中，通过水平和/或垂直施加的2或3抽头滤波器进行解块和解除振铃，这使得架构变得简单。

10. 发明申请

US20050024387A1 LAPE: layered presentation system utilizing compressed-domain image processing 有权
标题翻译： LAPE：利用压缩域图像处理的分层呈现系统
公开(公告)号：US20050024387A1
公开(公告)日：2005-02-03
申请号：US10631072
申请日：2003-07-31
申请人： Viresh Ratnakar , Vasudev Bhaskaran
发明人： Viresh Ratnakar , Vasudev Bhaskaran
IPC分类号： G06T11/80 , G06T3/00 , G06T11/60 , G09G5/00 , G09G5/36 , G09G5/377
CPC分类号： G06T11/60
摘要： A layered presentation system (LAPE) includes a server that performs compressed-domain image processing on image data received from multiple clients including a master client and other clients to generate a composite image that incorporates imagery from the other clients with a master image from the master client for viewing on a shared display. The system's clients can add imagery in the form of questions, comments, and graphics to a currently displayed image. The added imagery is processed along with the master image to generate the composite image that then appears on the shared display and perhaps also on each client's individual display. The processing includes scaling the master image/added imagery, as required, and blending and/or overlaying the added imagery onto the master image so as to augment but not obscure it. A network protocol is included for sending image data in the compressed domain back and forth between the server and each of the clients.
摘要翻译：分层呈现系统（LAPE）包括对从包括主客户端和其他客户端的多个客户端接收的图像数据执行压缩域图像处理的服务器，以生成包含来自其他客户机的图像的合成图像，其中主图像来自主设备客户端在共享显示器上查看。系统的客户端可以将问题，评论和图形的形象添加到当前显示的图像中。添加的图像将与主图像一起处理，以生成合成图像，然后出现在共享显示屏上，也可能在每个客户端的单个显示屏上。处理包括根据需要缩放主图像/添加的图像，并将添加的图像混合和/或叠加到主图像上，以便增加但不使其模糊。包括网络协议，用于在服务器与每个客户端之间来回传送压缩域中的图像数据。

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