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1. 发明授权

US08498476B2 High dynamic range texture compression 有权
标题翻译：高动态范围纹理压缩
公开(公告)号：US08498476B2
公开(公告)日：2013-07-30
申请号：US13429208
申请日：2012-03-23
申请人： Yan Lu , Wen Sun , Feng Wu , Shipeng Li
发明人： Yan Lu , Wen Sun , Feng Wu , Shipeng Li
IPC分类号： G06K9/00
CPC分类号： G06T9/00
摘要： A method for compressing a high dynamic range (HDR) texture. A first block of texels of the HDR texture in a red-green-blue (RGB) space may be transformed to a second block of texels in a luminance-chrominance space. The first block may have red values, green values and blue values. The second block may have luminance values and chrominance values. The chrominance values may be based on a sum of the red values, a sum of the green values and a sum of the blue values. The luminance values and the chrominance values may be converted to an 8-bit integer format. The luminance values may be modified to restore a local linearity property to the second block. The second block may be compressed.
摘要翻译：一种用于压缩高动态范围（HDR）纹理的方法。红 - 绿 - 蓝（RGB）空间中的HDR纹理的纹素的第一块可以被变换为亮度 - 色度空间中的第二纹理纹理块。第一个块可能具有红色值，绿色值和蓝色值。第二块可以具有亮度值和色度值。色度值可以基于红色值的总和，绿色值的和与蓝色值的和。亮度值和色度值可以被转换成8位整数格式。可以修改亮度值以恢复与第二块的局部线性特性。第二个块可能被压缩。

2. 发明申请

US20110170801A1 RESIZING OF DIGITAL IMAGES 有权
标题翻译：数字图像的调整
公开(公告)号：US20110170801A1
公开(公告)日：2011-07-14
申请号：US12684925
申请日：2010-01-09
申请人： Yan Lu , Wen Sun , Feng wu , Shipeng Li
发明人： Yan Lu , Wen Sun , Feng wu , Shipeng Li
IPC分类号： G06K9/32
CPC分类号： G06T3/4007 , G06F3/14 , G09G2320/0613 , G09G2320/0626 , G09G2340/0407
摘要： Digital images are resized according to a prescribed image scaling factor. An original image is re-sampled according to the scaling factor, resulting in an initial resized image. A probability of text (POT) map is generated for the initial resized image, where the POT map specifies a smoothed POT value for each pixel in the initial resized image. A weighting factor (WF) map is generated which maps each different smoothed POT value to a particular WF value. The WF map is used to calculate an adjusted luminance value for each pixel in the initial resized image, resulting in a final resized image.
摘要翻译：数字图像根据规定的图像缩放因子调整大小。根据缩放因子重新采样原始图像，导致初始调整大小的图像。为初始调整大小的图像生成文本（POT）图的概率，其中POT映射指定初始调整大小的图像中每个像素的平滑POT值。生成加权因子（WF）图，其将每个不同的平滑POT值映射到特定的WF值。 WF图用于计算初始调整大小的图像中每个像素的调整亮度值，得到最终调整大小的图像。

3. 发明申请

US20120242674A1 HIGH DYNAMIC RANGE TEXTURE COMPRESSION 有权
标题翻译：高动态范围压缩
公开(公告)号：US20120242674A1
公开(公告)日：2012-09-27
申请号：US13429208
申请日：2012-03-23
申请人： Yan Lu , Wen Sun , Feng Wu , Shipeng Li
发明人： Yan Lu , Wen Sun , Feng Wu , Shipeng Li
IPC分类号： G09G5/00
CPC分类号： G06T9/00
摘要： A method for compressing a high dynamic range (HDR) texture. A first block of texels of the HDR texture in a red-green-blue (RGB) space may be transformed to a second block of texels in a luminance-chrominance space. The first block may have red values, green values and blue values. The second block may have luminance values and chrominance values. The chrominance values may be based on a sum of the red values, a sum of the green values and a sum of the blue values. The luminance values and the chrominance values may be converted to an 8-bit integer format. The luminance values may be modified to restore a local linearity property to the second block. The second block may be compressed.
摘要翻译：一种用于压缩高动态范围（HDR）纹理的方法。红 - 绿 - 蓝（RGB）空间中的HDR纹理的纹素的第一块可以被变换为亮度 - 色度空间中的第二纹理纹理块。第一个块可能具有红色值，绿色值和蓝色值。第二块可以具有亮度值和色度值。色度值可以基于红色值的总和，绿色值的和与蓝色值的和。亮度值和色度值可以被转换成8位整数格式。可以修改亮度值以恢复与第二块的局部线性特性。第二个块可能被压缩。

4. 发明授权

US08165393B2 High dynamic range texture compression 有权
标题翻译：高动态范围纹理压缩
公开(公告)号：US08165393B2
公开(公告)日：2012-04-24
申请号：US12133369
申请日：2008-06-05
申请人： Yan Lu , Wen Sun , Feng Wu , Shipeng Li
发明人： Yan Lu , Wen Sun , Feng Wu , Shipeng Li
IPC分类号： G06K9/36
CPC分类号： G06T9/00
摘要： A method for compressing a high dynamic range (HDR) texture. A first block of texels of the HDR texture in a red-green-blue (RGB) space may be transformed to a second block of texels in a luminance-chrominance space. The first block may have red values, green values and blue values. The second block may have luminance values and chrominance values. The chrominance values may be based on a sum of the red values, a sum of the green values and a sum of the blue values. The luminance values and the chrominance values may be converted to an 8-bit integer format. The luminance values may be modified to restore a local linearity property to the second block. The second block may be compressed.
摘要翻译：一种用于压缩高动态范围（HDR）纹理的方法。红 - 绿 - 蓝（RGB）空间中的HDR纹理的纹素的第一块可以被变换为亮度 - 色度空间中的第二纹理纹理块。第一个块可能具有红色值，绿色值和蓝色值。第二块可以具有亮度值和色度值。色度值可以基于红色值的总和，绿色值的和与蓝色值的和。亮度值和色度值可以被转换成8位整数格式。可以修改亮度值以恢复与第二块的局部线性特性。第二个块可能被压缩。

5. 发明授权

US07714873B2 Strategies for compressing textures 有权
标题翻译：压缩纹理的策略
公开(公告)号：US07714873B2
公开(公告)日：2010-05-11
申请号：US11627171
申请日：2007-01-25
申请人： Andrew C. Flavell , Yan Lu , Wen Sun , Feng Wu , Shipeng Li
发明人： Andrew C. Flavell , Yan Lu , Wen Sun , Feng Wu , Shipeng Li
IPC分类号： G06K9/36 , G06K9/00 , G09G5/02 , G06T17/20 , G06T17/00 , H04B1/66 , H04B14/06
CPC分类号： G06T9/005 , H04N19/186
摘要： A technique is described for compressing textures for use in a graphics application, such as a 3D game application. The technique includes parsing first-compressed texture information (e.g., S3TC texture information) into respective components of the first-compressed texture information (such as main color information, color index information, main alpha information, and alpha index information). The technique then further compresses the respective components to yield second-compressed texture information (referred to as modified compressed texture information or MCT texture information). The MCT texture information can be stored and then decoded to reconstruct the original S3TC texture information for use in the graphics application. Compared to the use of unmodified S3TC texture information, the technique allows more economical storage of texture information, as well as more efficient loading of the texture information from storage to memory.
摘要翻译：描述了一种用于压缩纹理以用于诸如3D游戏应用的图形应用中的技术。该技术包括将第一压缩纹理信息（例如，S3TC纹理信息）解析成第一压缩纹理信息（诸如主色信息，颜色索引信息，主阿尔法信息和阿尔法索引信息）的各个分量。然后，该技术进一步压缩各个组件以产生第二压缩纹理信息（称为修改的压缩纹理信息或MCT纹理信息）。 MCT纹理信息可以被存储然后被解码以重建用于图形应用中的原始S3TC纹理信息。与使用未修改的S3TC纹理信息相比，该技术允许更经济地存储纹理信息，以及更有效地将纹理信息从存储器加载到存储器。

6. 发明授权

US07683910B2 Strategies for lossy compression of textures 有权
标题翻译：纹理有损压缩的策略
公开(公告)号：US07683910B2
公开(公告)日：2010-03-23
申请号：US11627228
申请日：2007-01-25
申请人： Yan Lu , Wen Sun , Andrew C. Flavell , Feng Wu , Shipeng Li
发明人： Yan Lu , Wen Sun , Andrew C. Flavell , Feng Wu , Shipeng Li
IPC分类号： G06K9/36 , G06T17/20 , G06T17/00 , G06T9/00 , G09G5/02 , G06K9/00
CPC分类号： G06T9/005 , G06T15/04 , H04N19/186
摘要： A technique is described for compressing textures for use in a graphics application, such as a 3D game application. The technique includes parsing first-compressed texture information (e.g., S3TC texture information) into respective components of the first-compressed texture information (such as main color information, color index information, main alpha information, and alpha index information). The technique then further compresses the respective components to yield second-compressed texture information (referred to as modified compressed texture information or MCT texture information). The MCT texture information can be stored and then decoded to reconstruct the original S3TC texture information for use in the graphics application. Compared to the use of unmodified S3TC texture information, the technique allows more economical storage of texture information, as well as more efficient loading of the texture information from storage to memory.
摘要翻译：描述了一种用于压缩纹理以用于诸如3D游戏应用的图形应用中的技术。该技术包括将第一压缩纹理信息（例如，S3TC纹理信息）解析成第一压缩纹理信息（诸如主色信息，颜色索引信息，主阿尔法信息和阿尔法索引信息）的各个分量。然后，该技术进一步压缩各个组件以产生第二压缩纹理信息（称为修改的压缩纹理信息或MCT纹理信息）。 MCT纹理信息可以被存储然后被解码以重建用于图形应用中的原始S3TC纹理信息。与使用未修改的S3TC纹理信息相比，该技术允许更经济地存储纹理信息，以及更有效地将纹理信息从存储器加载到存储器。

7. 发明申请

US20080002896A1 Strategies For Lossy Compression Of Textures 有权
标题翻译：有损压缩纹理的策略
公开(公告)号：US20080002896A1
公开(公告)日：2008-01-03
申请号：US11627228
申请日：2007-01-25
申请人： Yan Lu , Wen Sun , Andrew C. Flavell , Feng Wu , Shipeng Li
发明人： Yan Lu , Wen Sun , Andrew C. Flavell , Feng Wu , Shipeng Li
IPC分类号： G06K9/36 , G06K9/46
CPC分类号： G06T9/005 , G06T15/04 , H04N19/186
摘要： A technique is described for compressing textures for use in a graphics application, such as a 3D game application. The technique includes parsing first-compressed texture information (e.g., S3TC texture information) into respective components of the first-compressed texture information (such as main color information, color index information, main alpha information, and alpha index information). The technique then further compresses the respective components to yield second-compressed texture information (referred to as modified compressed texture information or MCT texture information). The MCT texture information can be stored and then decoded to reconstruct the original S3TC texture information for use in the graphics application. Compared to the use of unmodified S3TC texture information, the technique allows more economical storage of texture information, as well as more efficient loading of the texture information from storage to memory.
摘要翻译：描述了一种用于压缩纹理以用于诸如3D游戏应用的图形应用中的技术。该技术包括将第一压缩纹理信息（例如，S3TC纹理信息）解析成第一压缩纹理信息（诸如主色信息，颜色索引信息，主阿尔法信息和阿尔法索引信息）的各个分量。然后，该技术进一步压缩各个组件以产生第二压缩纹理信息（称为修改的压缩纹理信息或MCT纹理信息）。 MCT纹理信息可以被存储然后被解码以重建用于图形应用中的原始S3TC纹理信息。与使用未修改的S3TC纹理信息相比，该技术允许更经济地存储纹理信息，以及更有效地将纹理信息从存储器加载到存储器。

8. 发明授权

US08565554B2 Resizing of digital images 有权
标题翻译：调整数字图像的大小
公开(公告)号：US08565554B2
公开(公告)日：2013-10-22
申请号：US12684925
申请日：2010-01-09
申请人： Yan Lu , Wen Sun , Feng Wu , Shipeng Li
发明人： Yan Lu , Wen Sun , Feng Wu , Shipeng Li
IPC分类号： G06K9/32
CPC分类号： G06T3/4007 , G06F3/14 , G09G2320/0613 , G09G2320/0626 , G09G2340/0407
摘要： Digital images are resized according to a prescribed image scaling factor. An original image is re-sampled according to the scaling factor, resulting in an initial resized image. A probability of text (POT) map is generated for the initial resized image, where the POT map specifies a smoothed POT value for each pixel in the initial resized image. A weighting factor (WF) map is generated which maps each different smoothed POT value to a particular WF value. The WF map is used to calculate an adjusted luminance value for each pixel in the initial resized image, resulting in a final resized image.
摘要翻译：数字图像根据规定的图像缩放因子调整大小。根据缩放因子重新采样原始图像，导致初始调整大小的图像。为初始调整大小的图像生成文本（POT）图的概率，其中POT映射指定初始调整大小的图像中每个像素的平滑POT值。生成加权因子（WF）图，其将每个不同的平滑POT值映射到特定的WF值。 WF图用于计算初始调整大小的图像中每个像素的调整亮度值，得到最终调整大小的图像。

9. 发明申请

US20080046939A1 Bitstream Switching in Multiple Bit-Rate Video Streaming Environments 有权
标题翻译：多比特率视频流环境中的比特流切换
公开(公告)号：US20080046939A1
公开(公告)日：2008-02-21
申请号：US11460217
申请日：2006-07-26
申请人： Yan Lu , Feng Wu , Wen Sun , Shipeng Li
发明人： Yan Lu , Feng Wu , Wen Sun , Shipeng Li
IPC分类号： H04N7/173
CPC分类号： H04N21/44016 , H04N21/23424 , H04N21/23439 , H04N21/235 , H04N21/2402 , H04N21/2662 , H04N21/435
摘要： Bitstream switching for multiple bit rate video streaming uses a first algorithm to generate multiple encoded bitstreams of a piece of video at different bit rates. A different algorithm is used to generate multiple side bitstreams of the video. Each side stream is generated at respective ones of the different bit rates. The side bitstreams comprise switching frames to switch from a first bitstream encoded with the first algorithm at a first bit rate to a second bitstream encoded with the first algorithm at a different bit rate. At non-bitstream switching points, frames from respective ones of bitstreams generated with the first algorithm are streamed for presentation. At a bitstream switching point, a switching frame from a respective side bitstream is transmitted to a decoder to transition streaming from a first of the respective ones of the bitstreams to a second of the respective ones of the bitstreams.
摘要翻译：用于多比特率视频流的比特流切换使用第一算法以不同比特率生成一段视频的多个编码比特流。使用不同的算法来生成视频的多边比特流。每个侧流以不同比特率的相应的一个生成。侧比特流包括切换帧，以从第一比特流编码的第一比特流以第一比特率切换到以不同比特率编码的第一比特率的第二比特流。在非比特流切换点，利用第一算法生成的来自相应比特流的帧被流传输以便呈现。在比特流切换点，来自相应侧比特流的切换帧被发送到解码器，以将流从各个比特流中的第一个流转换到相应比特流中的第二个。

10. 发明授权

US08311102B2 Bitstream switching in multiple bit-rate video streaming environments 有权
标题翻译：在多个比特率视频流环境中的比特流切换
公开(公告)号：US08311102B2
公开(公告)日：2012-11-13
申请号：US11460217
申请日：2006-07-26
申请人： Yan Lu , Feng Wu , Wen Sun , Shipeng Li
发明人： Yan Lu , Feng Wu , Wen Sun , Shipeng Li
IPC分类号： H04N7/12
CPC分类号： H04N21/44016 , H04N21/23424 , H04N21/23439 , H04N21/235 , H04N21/2402 , H04N21/2662 , H04N21/435
摘要： Bitstream switching for multiple bit rate video streaming uses a first algorithm to generate multiple encoded bitstreams of a piece of video at different bit rates. A different algorithm is used to generate multiple side bitstreams of the video. Each side stream is generated at respective ones of the different bit rates. The side bitstreams comprise switching frames to switch from a first bitstream encoded with the first algorithm at a first bit rate to a second bitstream encoded with the first algorithm at a different bit rate. At non-bitstream switching points, frames from respective ones of bitstreams generated with the first algorithm are streamed for presentation. At a bitstream switching point, a switching frame from a respective side bitstream is transmitted to a decoder to transition streaming from a first of the respective ones of the bitstreams to a second of the respective ones of the bitstreams.
摘要翻译：用于多比特率视频流的比特流切换使用第一算法以不同比特率生成一段视频的多个编码比特流。使用不同的算法来生成视频的多边比特流。每个侧流以不同比特率的相应的一个生成。侧比特流包括切换帧，以从第一比特流编码的第一比特流以第一比特率切换到以不同比特率编码的第一比特率的第二比特流。在非比特流切换点，利用第一算法生成的来自相应比特流的帧被流传输以便呈现。在比特流切换点，来自相应侧比特流的切换帧被发送到解码器，以将流从各个比特流中的第一个流转换到相应比特流中的第二个。

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