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1. 发明申请

US20050024486A1 Video codec system with real-time complexity adaptation 审中-公开
标题翻译：具有实时复杂度适应的视频编解码系统
公开(公告)号：US20050024486A1
公开(公告)日：2005-02-03
申请号：US10631155
申请日：2003-07-31
申请人： Viresh Ratnakar , William Chen
发明人： Viresh Ratnakar , William Chen
IPC分类号： H04N7/32 , H04N7/26 , H04N7/30 , H04N7/14
CPC分类号： H04N19/57 , H04N19/103 , H04N19/122 , H04N19/132 , H04N19/156 , H04N19/172 , H04N19/186 , H04N19/523
摘要： An encoder/decoder (codec) is configured to cause the coding/decoding algorithms used by the codec to dynamically adapt according to the available computational resources in response to actual complexity measurements performed at run-time. In a system in which multiple video codecs have to operate simultaneously in real-time, sharing the system's available resources, this invention provides a way to increase the number of simultaneous codecs that can co-exist. The principles of the invention are also applicable to an individual encoder and an individual decoder.
摘要翻译：编码器/解码器（编解码器）被配置为响应于在运行时执行的实际复杂度测量，使得编解码器使用的编码/解码算法根据可用的计算资源动态地适应。在其中多个视频编解码器必须同时实时操作的系统中，共享系统的可用资源，本发明提供了增加可以共存的同时编解码器数量的方法。本发明的原理也适用于单个编码器和个体解码器。

2. 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。

3. 发明授权

US07046818B2 Standards compliant watermarking for access management 有权
公开(公告)号：US07046818B2
公开(公告)日：2006-05-16
申请号：US10010196
申请日：2001-11-30
申请人： Viresh Ratnakar , Onur G. Guleryuz
发明人： Viresh Ratnakar , Onur G. Guleryuz
IPC分类号： G06K9/00
CPC分类号： G06T1/005 , G06T1/0028 , G06T2201/0052 , G06T2201/0203
摘要： Visible watermarking techniques for digital images and video operate on decoded transform coefficients and maintain the watermarked data in the same compressed format as the original so that the watermarked data can be viewed with standard tools and applications. Moreover, for most of the techniques presented, the watermarked data has exactly the same compressed size as the original. The watermark can be inserted and removed using a key for applications requiring content protection. The watermark insertion and removal algorithms are very efficient and exploit some features of compressed data formats (such as JPEG and MPEG) which allow most of the work to be done in the compressed domain.

4. 发明授权

US06625309B1 Image partitioning to avoid overlap transmission 失效
标题翻译：图像分割以避免重叠传输
公开(公告)号：US06625309B1
公开(公告)日：2003-09-23
申请号：US09408108
申请日：1999-09-29
申请人： Chia-Hsin Li , Viresh Ratnakar
发明人： Chia-Hsin Li , Viresh Ratnakar
IPC分类号： G06K934
CPC分类号： G06T15/40 , H04N1/3873
摘要： Image partitioning methods, which may be implemented by software or hardware on a computer, partition a set of multiple overlapping images to be transmitted so that only the visible portions of the images are transmitted. The underlying partitioning algorithm uses rectangles to iteratively partition the image set.
摘要翻译：可以由计算机上的软件或硬件实现的图像分割方法分割要发送的多个重叠图像的集合，使得仅传输图像的可见部分。底层划分算法使用矩形来迭代地分割图像集。

5. 发明授权

US09031898B2 Presentation of search results based on document structure 有权
标题翻译：基于文档结构显示搜索结果
公开(公告)号：US09031898B2
公开(公告)日：2015-05-12
申请号：US10949708
申请日：2004-09-27
申请人： Amitabh K. Singhal , Viresh Ratnakar , Maxim Lifantsev , Joseph Kieran O'Sullivan
发明人： Amitabh K. Singhal , Viresh Ratnakar , Maxim Lifantsev , Joseph Kieran O'Sullivan
IPC分类号： G06F17/30 , G06F17/21 , G06F17/22
CPC分类号： G06F17/3061 , G06F17/211 , G06F17/2247 , G06F17/30864 , G06F17/30908
摘要： A system identifies a document relating to a search term, where the document includes a set of structural elements. The system determines a distribution of occurrences of the search term in the document, identifies one of the structural elements based on the distribution of occurrences of the search term in the document, and presents information associated with the identified structural element.
摘要翻译：系统识别与搜索项相关的文档，其中文档包括一组结构元素。系统确定文档中搜索项的出现分布，基于文档中搜索项的出现分布来识别结构元素之一，并呈现与所识别的结构元素相关联的信息。

6. 发明授权

US06278432B1 Image delivery and display system 失效
标题翻译：图像传送和显示系统
公开(公告)号：US06278432B1
公开(公告)日：2001-08-21
申请号：US09096719
申请日：1998-06-11
申请人： Viresh Ratnakar
发明人： Viresh Ratnakar
IPC分类号： G09G500
CPC分类号： G06T11/00 , H04L67/18 , H04L67/38 , H04L69/04
摘要： An image delivery and display system embodying a technique for displaying on a client computer of a client-server network a portion of an image stored on the server. Upon receiving a request from the client computer specifying particular x, y coordinates, the server decompresses the image to extract the area of interest, partitions the image area into tiles and extracts the tile containing the x, y coordinates and a certain number of surrounding tiles, recompresses those tiles and transmits those tiles to the client computer. The tile containing the x, y coordinates is extracted, recompressed and transmitted first followed by the surrounding tiles in spiral order. The client computer then decompresses and displays the tiles in that same order.
摘要翻译：一种体现用于在客户端计算机上显示服务器上存储的图像的一部分的技术的图像传送和显示系统。在从客户端计算机接收到指定特定x，y坐标的请求时，服务器解压缩图像以提取感兴趣的区域，将图像区域分割成瓦片并提取包含x，y坐标和一定数量的周围瓦片的瓦片，重新压缩这些瓦片并将这些瓦片传输到客户端计算机。包含x，y坐标的瓦片首先被提取，重新压缩并发送，然后按照螺旋顺序传送周围的瓦片。然后客户端计算机以相同的顺序解压缩并显示瓦片。

7. 发明授权

US06233359B1 File size bounded JPEG transcoder (FSBJT) 有权
标题翻译：文件大小有限JPEG代码转换器（FSBJT）
公开(公告)号：US06233359B1
公开(公告)日：2001-05-15
申请号：US09183552
申请日：1998-10-29
申请人： Viresh Ratnakar , Victor Ivashin
发明人： Viresh Ratnakar , Victor Ivashin
IPC分类号： G06K936
CPC分类号： H04N19/132 , H04N19/146 , H04N19/18 , H04N19/40
摘要： A technique that reduces the size of an existing JPEG file or set of DCT coefficients to satisfy a certain bit budget by setting to zero coefficients whose magnitude is below a certain threshold and which occur after a certain ordinal number in the zig-zag scan. The cutoff ordinal number is chosen using a clever savings calculation strategy. This strategy is implemented by filling appropriate savings values in an array of savings values, Savings[1], . . . , Savings[63]. The value Savings[n] is exactly the number of bits saved by reducing the thresholding cutoff ordinal number from n +1 to n. When a non-zero coefficient is set to zero, bits are saved because two runs of zeros (the one preceding it and the one following it) get combined into a single, longer run of zeros. The exact number of bits saved can be calculated by adding the bits needed to code the previous and next runs, and subtracting the bits needed to code the combined run. Some special conditions (runs longer than 16 and end-of-block conditions) need to be carefully factored into the computation.
摘要翻译：一种减小现有JPEG文件或一组DCT系数的大小以通过将其设置为零幅度低于某一阈值并且在Z字形扫描中发生在某个序数之后的零系数来满足特定比特预算的技术。使用巧妙的储蓄计算策略选择截止序数。这种策略是通过在储蓄值[Saving] [1]中填充适当的储蓄值来实现的。。。，储蓄[63]。值Savings [n]正好是通过将阈值截止序数从n + 1减为n来节省的位数。当非零系数设置为零时，保存位，因为两次运行的零（之前的零和其后的一个）合并成一个较长的零运行。可以通过添加编码前一次和下一次运行所需的位，并减去编码组合运行所需的位，来计算确切的保存位数。一些特殊条件（运行时间长于16和块结束条件）需要仔细考虑到计算中。

8. 发明授权

US06928186B2 Semantic downscaling and cropping (SEDOC) of digital images 失效
标题翻译：数字图像的语义缩小和裁剪（SEDOC）
公开(公告)号：US06928186B2
公开(公告)日：2005-08-09
申请号：US10177010
申请日：2002-06-21
申请人： Viresh Ratnakar
发明人： Viresh Ratnakar
IPC分类号： G06T5/00 , G06T9/00 , G06K9/36
CPC分类号： G06T9/007 , G06T3/40 , G06T7/194 , G06T2207/20132
摘要： A compressed-domain-based algorithm reduces a source image to a given target size using a combination of downscaling, cropping, and region-of-interest identification. The source image is partitioned into a plurality of macroblocks, each macroblock containing a plurality of chrominance and luminance blocks, each chrominance block and each luminance block containing a DC coefficient and AC coefficients. To each macroblock, a first rule is applied based on values of the DC coefficient of the chrominance blocks in that macroblock to identify a particular type of texture in the image. Also to each macroblock, a second rule is applied based on select values of the AC coefficient of luminance blocks in that macroblock to identify edges in the image. The macroblocks within the image are then searched to find an area containing an area of interest based on the results of applying the first and second rules.
摘要翻译：基于压缩域的算法使用缩减，裁剪和感兴趣区域标识的组合将源图像减少到给定的目标大小。源图像被分割成多个宏块，每个宏块包含多个色度和亮度块，每个色度块和每个亮度块包含DC系数和AC系数。对于每个宏块，基于该宏块中的色度块的DC系数的值来应用第一规则，以识别图像中的特定类型的纹理。还针对每个宏块，基于该宏块中的亮度块的AC系数的选择值来应用第二规则以识别图像中的边缘。然后根据应用第一和第二规则的结果，搜索图像内的宏块以找到包含感兴趣区域的区域。

9. 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。

10. 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。

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