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1. 发明申请

US20120087581A1 Methods and Arrangements for Image Processing 有权
标题翻译：图像处理的方法和布置
公开(公告)号：US20120087581A1
公开(公告)日：2012-04-12
申请号：US13377106
申请日：2009-12-22
申请人： Jim Rasmusson , Tomas Akenine-Möller , Per Wennersten , Jacob Ström
发明人： Jim Rasmusson , Tomas Akenine-Möller , Per Wennersten , Jacob Ström
IPC分类号： G06K9/36
CPC分类号： H04N1/64 , G06T9/00 , H04N19/14 , H04N19/428 , H04N19/593
摘要： The present invention relates to methods and arrangements for compressing images. The invention is based on the fact that edge blocks contain much information in one direction (across the edge), but very little information in the other direction (along the edge). By encoding edges explicitly, it is possible to obtain a high quality to a very low cost for many blocks. A block is encoded by first specifying the orientation of the edge in the block, and then specifying the profile across the edge using a function with a small number of parameters.
摘要翻译：本发明涉及压缩图像的方法和装置。本发明基于以下事实：边缘块在一个方向（跨越边缘）包含许多信息，但在另一个方向（沿着边缘）包含很少的信息。通过明确地编码边缘，可以获得许多块的高质量到非常低的成本。通过首先指定块中边缘的方向，然后使用少量参数的函数来指定边缘上的轮廓来编码块。

2. 发明授权

US08447103B2 Methods and arrangements for image processing 有权
标题翻译：图像处理方法和布置
公开(公告)号：US08447103B2
公开(公告)日：2013-05-21
申请号：US13377106
申请日：2009-12-22
申请人： Jim Rasmusson , Tomas Akenine-Möller , Per Wennersten , Jakob Ström
发明人： Jim Rasmusson , Tomas Akenine-Möller , Per Wennersten , Jakob Ström
IPC分类号： G06K9/00 , G06K9/36
CPC分类号： H04N1/64 , G06T9/00 , H04N19/14 , H04N19/428 , H04N19/593
摘要： The present invention relates to methods and arrangements for compressing images. The invention is based on the fact that edge blocks contain much information in one direction (across the edge), but very little information in the other direction (along the edge). By encoding edges explicitly, it is possible to obtain a high quality to a very low cost for many blocks. A block is encoded by first specifying the orientation of the edge in the block, and then specifying the profile across the edge using a function with a small number of parameters.
摘要翻译：本发明涉及压缩图像的方法和装置。本发明基于以下事实：边缘块在一个方向（跨越边缘）包含许多信息，但在另一个方向（沿着边缘）包含很少的信息。通过明确地编码边缘，可以获得许多块的高质量到非常低的成本。通过首先指定块中边缘的方向，然后使用少量参数的函数来指定边缘上的轮廓来编码块。

3. 发明授权

US08107753B2 Prediction-based image processing 有权
标题翻译：基于预测的图像处理
公开(公告)号：US08107753B2
公开(公告)日：2012-01-31
申请号：US12863727
申请日：2009-01-19
申请人： Jim Rasmusson , Tomas Akenine-Möller , Jacob Ström
发明人： Jim Rasmusson , Tomas Akenine-Möller , Jacob Ström
IPC分类号： G06K9/36
CPC分类号： G06T9/00 , H04N19/11 , H04N19/14 , H04N19/176 , H04N19/426 , H04N19/46 , H04N19/593 , H04N19/90 , H04N19/96
摘要： A pixel block (300) is compressed by sub-sampling at least a portion of the pixels (310) into subblocks (320, 330). Predictions are determined for the property values of these subblocks (320, 330) by calculating a variance measure based on property values of neighboring pixels (310)/subblocks (320, 330) in two prediction directions in the block (300) relative to a current subblock (320, 330). If the variance is below a threshold, the prediction is calculated based on neighboring property values in both directions. If the measure exceeds the threshold, the neighboring property values in only one of the two predictions directions are used for calculating the prediction. A guiding bit (450) descriptive of the selected direction is also provided. A prediction error is calculated based on the property value and the calculated prediction. The compressed block (400) comprises an encoded representation (460) of the prediction error and any guiding bit (470).
摘要翻译：通过对像素（310）的至少一部分进行子采样（320,330）来对像素块（300）进行压缩。通过基于块（300）中的两个预测方向上的相邻像素（310）/子块（320,330）的属性值相对于一个块（320,330）计算方差度量，来确定这些子块（320,330）的属性值的预测当前子块（320,330）。如果方差低于阈值，则基于两个方向上的相邻属性值来计算预测。如果测量超过阈值，则仅使用两个预测方向中的一个的相邻属性值来计算预测。还提供了描述所选方向的引导位（450）。基于属性值和计算出的预测计算预测误差。压缩块（400）包括预测误差的编码表示（460）和任何引导位（470）。

4. 发明授权

US07751630B2 Multi-mode image processing 有权
标题翻译：多模式图像处理
公开(公告)号：US07751630B2
公开(公告)日：2010-07-06
申请号：US11571806
申请日：2005-07-01
申请人： Jacob Ström , Tomas Akenine-Möller
发明人： Jacob Ström , Tomas Akenine-Möller
IPC分类号： G06K9/36
CPC分类号： G06T9/00 , H04N19/12 , H04N19/176 , H04N19/186 , H04N19/91
摘要： The invention is applied to image processing schemes by providing at least one auxiliary block processing mode in addition to the standard default block processing mode of the scheme. An image to be decoded is divided into a number of image blocks (800) having multiple image elements (810). These blocks (800) are individually compressed by means of a default compressing mode or an auxiliary compressing mode, depending on which mode that results in a smallest error metric. A portion (980) of the resulting compressed block (900) is used to discriminate between the two modes. In the auxiliary mode, the remaining payload portion (990) of the compressed block (900) can be used for encoding purposes, whereas the default mode can in addition utilize the discriminating portion (980).
摘要翻译：除了方案的标准默认块处理模式之外，还通过提供至少一个辅助块处理模式将本发明应用于图像处理方案。要解码的图像被划分为具有多个图像元素（810）的多个图像块（800）。这些块（800）通过默认压缩模式或辅助压缩模式被单独压缩，取决于导致最小误差度量的哪个模式。所得到的压缩块（900）的部分（980）用于区分两种模式。在辅助模式中，压缩块（900）的剩余有效载荷部分（990）可以用于编码目的，而默认模式可以另外使用识别部分（980）。

5. 发明授权

US07940283B2 Method and apparatus for pixel sampling 有权
标题翻译：像素采样方法和装置
公开(公告)号：US07940283B2
公开(公告)日：2011-05-10
申请号：US11719742
申请日：2005-11-18
申请人： Jacob Ström , Tomas Akenine-Möller
发明人： Jacob Ström , Tomas Akenine-Möller
IPC分类号： G09G5/00
CPC分类号： G06T11/00 , G06T3/4007
摘要： A method and a device for generating a pixel value from a plurality of sample values being generated from a plurality of sample points. The method comprises generating a plurality of sample values; and weighting said plurality of sample values for determining said pixel value. Each sample value is generated from one of a plurality of candidate sample points within a sample region. The sample region is positioned at a corner of two intersecting borders of the pixel. The size of the sample region is smaller than the size of the pixel. The device is arranged to carry out the method according to the invention.
摘要翻译：一种用于从多个采样点产生的多个样本值生成像素值的方法和装置。该方法包括生成多个样本值; 以及对所述多个采样值加权以确定所述像素值。每个样本值从样本区域内的多个候选样本点中的一个生成。样本区域位于像素的两个相交边界的拐角处。样本区域的大小小于像素的大小。该装置被设置为执行根据本发明的方法。

6. 发明申请

US20100014766A1 MULTI-MODE VECTOR-BASED IMAGE PROCESSING 有权
标题翻译：多模式矢量图像处理
公开(公告)号：US20100014766A1
公开(公告)日：2010-01-21
申请号：US12522736
申请日：2008-03-31
申请人： Tomas Akenine-Möller , Munkberg Jacob , Jacob Ström
发明人： Tomas Akenine-Möller , Munkberg Jacob , Jacob Ström
IPC分类号： G06K9/36
CPC分类号： G06T9/005 , G06T9/00 , G06T9/008 , H04N19/176
摘要： A block (300) of image elements (310) is compressed by identifying a base vector (460) based on normalized feature vectors (312) of the block (300). If a position-determining coordinate (420) of the base vector (460) is present inside a defined selection section (530) of feature vector space (500), the block (300) is compressed according to a default mode and an auxiliary mode to get a default and auxiliary compressed block (600), respectively. The compressed block (600) resulting in smallest compression error is selected. If the auxiliary mode is selected, the position-determining coordinate (420) is mapped to get a mapped coordinate (425) present outside the representable normalization portion (510) of vector space (500). The auxiliary compressed block (600) comprises a representation of this mapped coordinate (425). If the default mode is selected no such coordinate mapping is performed and the default compressed block (600) instead comprises a representation of the non-mirrored coordinate
摘要翻译：通过基于块（300）的归一化特征向量（312）识别基本向量（460）来压缩图像元素（310）的块（300）。如果基本向量（460）的位置确定坐标（420）存在于特征向量空间（500）的定义的选择部分（530）内，则根据默认模式和辅助模式来压缩块（300）获得默认和辅助压缩块（600）。选择导致最小压缩误差的压缩块（600）。如果选择了辅助模式，则映射位置确定坐标（420）以获得呈现在向量空间（500）的可表示归一化部分（510）之外的映射坐标（425）。辅助压缩块（600）包括该映射坐标的表示（425）。如果选择了默认模式，则不执行这样的坐标映射，并且默认压缩块（600）代替地包括非镜像坐标的表示

7. 发明授权

US08031937B2 Frame buffer compression and decompression method for graphics rendering 有权
标题翻译：帧缓冲器压缩和解压缩方法用于图形渲染
公开(公告)号：US08031937B2
公开(公告)日：2011-10-04
申请号：US11953339
申请日：2007-12-10
申请人： Jim Rasmusson , Tomas Akenine-Möller , Jon Hasselgren , Jacob Munkberg
发明人： Jim Rasmusson , Tomas Akenine-Möller , Jon Hasselgren , Jacob Munkberg
IPC分类号： G06K9/00 , G06T17/00 , G06K9/36
CPC分类号： G06T11/40 , G09G5/363 , G09G5/393 , G09G2340/02 , G09G2340/10 , H04N19/12 , H04N19/147 , H04N19/154 , H04N19/176 , H04N19/40 , H04N19/423
摘要： Methods and apparatus are disclosed for the processing of frame buffer data, such as color buffer data, in graphics processing applications. Although more generally applicable, these methods and apparatus are particularly useful in real-time, polygon-based, 3D rendering applications. An exemplary method for processing graphics data according to one or more embodiments of the invention begins with the retrieval, from a buffer, of pixel values corresponding to a tile of two or more pixels, and with the updating of one or more of those updated pixel values. The updated pixel values are selectively compressed using a lossy compression operation or a lossless compression operation, based on an accumulated error metric value for the tile. If lossy compression is used, then the accumulated error metric value for the tile is updated; in either event, the compressed pixel values are stored in the frame buffer for further processing. With this approach, the accumulated error caused by successive, or tandem, compression operations may be limited to a pre-determined maximum.
摘要翻译：公开了用于在图形处理应用中处理帧缓冲器数据（例如彩色缓冲器数据）的方法和装置。尽管更普遍适用，但是这些方法和装置在实时，基于多边形的3D渲染应用中特别有用。根据本发明的一个或多个实施例的用于处理图形数据的示例性方法开始于从缓冲器检索对应于两个或更多个像素的图块的像素值，并且随着更新这些更新像素中的一个或多个价值观。基于瓦片的累积误差度量值，使用有损压缩操作或无损压缩操作来选择性地压缩更新的像素值。如果使用有损压缩，则更新瓦片的累积误差量度值; 在任一情况下，将压缩像素值存储在帧缓冲器中用于进一步处理。利用这种方法，由连续或串联的压缩操作引起的累积误差可能被限制为预定的最大值。

8. 发明授权

US09665951B2 Unified compression/decompression graphics architecture 有权
公开(公告)号：US09665951B2
公开(公告)日：2017-05-30
申请号：US12127462
申请日：2008-05-27
申请人： Jim Rasmusson , Tomas Akenine-Möller , Petrik Clarberg , Jon Hasselgren , Jacob Munkberg
发明人： Jim Rasmusson , Tomas Akenine-Möller , Petrik Clarberg , Jon Hasselgren , Jacob Munkberg
IPC分类号： G06F12/02 , G06T11/00 , G06T9/00 , G06T1/60 , G06T15/04
CPC分类号： G06T11/001 , G06T1/60 , G06T9/00 , G06T15/04 , G06T2210/08
摘要： A unified compression/decompression architecture is disclosed for reducing memory bandwidth requirements in 3D graphics processing applications. The techniques described erase several distinctions between a texture (compressed once, and decompressed many times), and buffers (compressed and decompressed repeatedly during rendering of an image). An exemplary method for processing graphics data according to one or more embodiments of the invention thus begins with the updating of one or more tiles of a first image array, which are then compressed, using a real-time buffer compression algorithm, to obtain compressed image array tiles. The compressed image array tiles are stored for subsequent use as a texture. During real-time rendering of a second image array, the compressed image array tiles are retrieved and decompressed using a decompression algorithm corresponding to the buffer compression algorithm. The decompressed image array tiles are then applied as a texture to one or more primitives in the second image array.

9. 发明授权

US08396309B2 Index-based pixel block processing 有权
标题翻译：基于索引的像素块处理
公开(公告)号：US08396309B2
公开(公告)日：2013-03-12
申请号：US12994516
申请日：2009-05-13
申请人： Jim Rasmusson , Tomas Akenine-Möller
发明人： Jim Rasmusson , Tomas Akenine-Möller
IPC分类号： G06K9/36 , G06K9/46
CPC分类号： H04N19/98 , G06T9/004 , H04N19/105 , H04N19/126 , H04N19/14 , H04N19/176 , H04N19/46 , H04N19/593 , H04N19/91
摘要： A pixel block is compressed by determining a reference set of multiple reference property values. A value index associated with a reference property value of the reference set is assigned to each pixel in the pixel block based on the original property value of the pixel. A prediction of the value index is provided based on the value index assigned to at least one neighboring pixel in the pixel block. A prediction error is calculated based on the value index assigned to a pixel and its value index prediction. The compressed pixel block includes encoded representations of the prediction errors and an encoded representation of the reference set.
摘要翻译：通过确定多个参考属性值的参考集来压缩像素块。基于像素的原始属性值，将与参考集的参考属性值相关联的值索引分配给像素块中的每个像素。基于分配给像素块中的至少一个相邻像素的值索引来提供值索引的预测。基于分配给像素的值索引及其值指数预测来计算预测误差。压缩像素块包括预测误差的编码表示和参考集合的编码表示。

10. 发明授权

US08471851B2 Method and device for rending three-dimensional graphics 有权
标题翻译：用于渲染三维图形的方法和装置
公开(公告)号：US08471851B2
公开(公告)日：2013-06-25
申请号：US11719747
申请日：2005-11-18
申请人： Jacob Ström , Tomas Akenine-Möller
发明人： Jacob Ström , Tomas Akenine-Möller
IPC分类号： G09G5/36
CPC分类号： G06T15/405 , G06T15/40
摘要： A method for updating values of a depth buffer comprising values for display blocks of a display, and a device for implementing the method. The display is partitioned into a plurality of display regions, including a plurality of display blocks and having a minimum region depth value and a maximum region depth value. Each display region includes a plurality of display subregions. A minimum subregion depth value and a maximum subregion depth value are determined relative to at least one of the minimum region depth value and the maximum region depth value.
摘要翻译：一种用于更新包括显示器的显示块的值的深度缓冲器的值的方法，以及用于实现该方法的装置。将显示器划分为包括多个显示块并具有最小区域深度值和最大区域深度值的多个显示区域。每个显示区域包括多个显示子区域。相对于最小区域深度值和最大区域深度值中的至少一个确定最小子区域深度值和最大子区域深度值。

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