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1. 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。

2. 发明授权

US06421468B1 Method and apparatus for sharpening an image by scaling elements of a frequency-domain representation 有权
标题翻译：通过缩放频域表示的元素来锐化图像的方法和装置
公开(公告)号：US06421468B1
公开(公告)日：2002-07-16
申请号：US09226370
申请日：1999-01-06
申请人： Viresh Ratnakar , Vasudev Bhaskaran
发明人： Viresh Ratnakar , Vasudev Bhaskaran
IPC分类号： H04N712
CPC分类号： G06T3/4084 , G06T5/003 , G06T5/10 , G06T2207/20192 , H04N1/4092 , H04N5/208
摘要： An original image is sharpened by obtaining a first frequency-domain representation of the original image, selecting one or more elements from this first representation based on one more criteria such as element magnitude and frequency, scaling the selected elements according to one or more scale factors, and forming a second frequency-domain representation by combining the scaled selected elements with the unselected elements of the first representation. A sharpened reproduction of the original image may be generated by applying an inverse transform to the second frequency-domain representation. A technique for deriving the value of the one or more scale factors is also discussed.
摘要翻译：通过获得原始图像的第一频域表示来锐化原始图像，基于诸如元素幅度和频率的多个标准从该第一表示中选择一个或多个元素，根据一个或多个比例因子对所选择的元素进行缩放，以及通过将缩放的所选择的元素与第一表示的未选择元素组合来形成第二频域表示。可以通过对第二频域表示应用逆变换来生成原始图像的锐化再现。还讨论了用于导出一个或多个比例因子的值的技术。

3. 发明授权

US06298166B1 Image transformations in the compressed domain 失效
标题翻译：压缩域中的图像变换
公开(公告)号：US06298166B1
公开(公告)日：2001-10-02
申请号：US09052039
申请日：1998-03-30
申请人： Viresh Ratnakar , Victor Ivashin , Vasudev Bhaskaran
发明人： Viresh Ratnakar , Victor Ivashin , Vasudev Bhaskaran
IPC分类号： G06K936
CPC分类号： H04N19/48 , G06T3/60 , H04N19/90
摘要： Image processing techniques which involve direct manipulation of the compressed domain representation of an image to achieve the desired spatial domain processing without having to go through a complete decompression and compression process. The techniques include processing approaches for performing the eight operations in D4 (the dihedral group of symmetries of a square) on JPEG images using the discrete cosine transform (DCT) domain representation of the images directly. For a task such as image rotation by 90° (an operation in D4), DCT-domain based methods can yield nearly a five-fold increase in speed over a spatial-domain based technique. These simple compressed-domain based processing techniques are well suited to the imaging tasks that are needed in a JPEG-based digital still-camera system.
摘要翻译：图像处理技术涉及直接操纵图像的压缩域表示以实现期望的空间域处理，而不必经历完全的解压缩和压缩处理。这些技术包括使用图像的离散余弦变换（DCT）域表示直接在JPEG图像上执行D4中的八个操作（平方对称的二面体组）的处理方法。对于诸如图像旋转90°（D4中的操作）的任务，基于DCT域的方法可以在基于空间域的技术上产生几乎五倍的速度增加。这些简单的基于压缩域的处理技术非常适合于基于JPEG的数码相机系统中所需的成像任务。

4. 发明授权

US07391910B2 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：US07391910B2
公开(公告)日：2008-06-24
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： G06K9/36 , G09G5/00 , G06K9/46
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，用于在服务器和每个客户端之间来回传送压缩域中的图像数据。

5. 发明授权

US07050656B2 Image scaling in the compressed domain 失效
标题翻译：压缩域中的图像缩放
公开(公告)号：US07050656B2
公开(公告)日：2006-05-23
申请号：US10316362
申请日：2002-12-11
申请人： Vasudev Bhaskaran , Viresh Ratnakar
发明人： Vasudev Bhaskaran , Viresh Ratnakar
IPC分类号： G06K9/32
CPC分类号： G06T3/4023
摘要： An efficient compressed-domain-based algorithm that works by combining the IDCT and pixel-domain averaging into a single compressed domain operation, where a part of the cost of even this simplified operation can be absorbed into the de-quantization process. The original image need not be decompressed fully, only to the point of extracting the transform coefficients. Compressed-domain scaling for all scales k/8 for 1≦k≦8, including ⅜, ⅝, ¾, ⅞, is provided. By chaining multiple operations, any scale factors of the form k1k2 . . . kl/8l for integers ki's in the range [1,7] can be achieved.
摘要翻译：通过将IDCT和像素域平均组合成单个压缩域操作来工作的有效的基于压缩域的算法，其中甚至这种简化操作的成本的一部分可以被吸收到去量化过程中。原始图像不需要完全解压缩，只能提取变换系数。提供了1 <= k <= 8的所有尺度k / 8的压缩域缩放，包括3/8,5 / 8，¾，7/8。通过链接多个操作，可以使用形式k <1> 2 的任何比例因子。。。对于[1,7]范围内的整数k i i i，可以实现k 1/1/1/1。

6. 发明授权

US6064764A Fragile watermarks for detecting tampering in images 失效
标题翻译：用于检测图像中的篡改的脆弱水印
公开(公告)号：US6064764A
公开(公告)日：2000-05-16
申请号：US52041
申请日：1998-03-30
申请人： Vasudev Bhaskaran , Viresh Ratnakar
发明人： Vasudev Bhaskaran , Viresh Ratnakar
IPC分类号： H04N7/26 , G06T1/00 , H04N1/32 , H04N1/387 , G06K9/00
CPC分类号： G06T1/0042 , H04N1/32154 , H04N1/32187 , H04N1/32277 , H04N1/32283 , G06T2201/0052 , G06T2201/0061 , H04N2201/3236 , H04N2201/327 , H04N2201/3281
摘要： A watermarking scheme for images which includes techniques for inserting and extracting fragile watermarks in the frequency domain and for determining whether an image so watermarked has been tampered with. Watermark insertion is accomplished by embedding the bits of a digital signature of a hash function of the image in the frequency coefficients of the image. Tamper detection is accomplished generally as follows: the fragile watermark which was embedded during the watermark insertion process is extracted from the image; the hash function of the image is computed as in the insertion process; it is verified using a public key whether the extracted watermark is a valid signature of the hash value. If so, then there is assurance that the image has not been tampered with. Otherwise, there is reason to conclude that the image has been tampered with.
摘要翻译：一种用于图像的水印方案，其包括用于在频域中插入和提取脆弱水印并且用于确定是否已经篡改了水印的图像的技术。通过将图像的散列函数的数字签名的比特嵌入图像的频率系数来实现水印插入。篡改检测通常如下完成：从图像中提取在水印插入过程中嵌入的脆弱水印; 图像的散列函数如插入过程那样计算; 使用公开密钥验证所提取的水印是否是哈希值的有效签名。如果是这样，那么确保图像没有被篡改。否则，有理由断定图像已被篡改。

7. 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。

8. 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。

9. 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。

10. 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。

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