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1. 发明授权

US08824790B2 Prediction-based image processing 有权
标题翻译：基于预测的图像处理
公开(公告)号：US08824790B2
公开(公告)日：2014-09-02
申请号：US13619127
申请日：2012-09-14
申请人： Jacob Ström , Per Wennersten , Tomas Akenine-Moller , Jim Rasmusson
发明人： Jacob Ström , Per Wennersten , Tomas Akenine-Moller , Jim Rasmusson
IPC分类号： G06K9/36 , G06K9/46
CPC分类号： G06T9/00 , H04N19/105 , H04N19/124 , H04N19/14 , H04N19/15 , H04N19/152 , H04N19/176 , H04N19/182 , H04N19/186 , H04N19/192 , H04N19/426 , H04N19/46 , H04N19/593
摘要： A pixel block is compressed by providing a respective color component prediction for each pixel in the block. A difference between color components of two neighboring pixels is calculated and compared to a threshold. If the difference is smaller than the threshold, the prediction is calculated based on a first linear combination of the color components of these two neighboring pixels. However, if the difference exceeds the threshold, a second or third linear combination of the color components of the neighboring pixels is employed in the prediction. A guiding bit associated with the selected linear combination may be used. A prediction error is calculated based on the color component of the pixel and the provided prediction. The compressed block comprises an encoded representation of the prediction error and any guiding bit.
摘要翻译：通过为块中的每个像素提供相应的颜色分量预测来压缩像素块。计算两个相邻像素的颜色分量之间的差异并将其与阈值进行比较。如果差小于阈值，则基于这两个相邻像素的颜色分量的第一线性组合来计算预测。然而，如果差异超过阈值，则在预测中采用相邻像素的颜色分量的第二或第三线性组合。可以使用与所选择的线性组合相关联的引导位。基于像素的颜色分量和所提供的预测来计算预测误差。压缩块包括预测误差和任何引导位的编码表示。

2. 发明申请

US20130011059A1 Prediction-Based Image Processing 有权
标题翻译：基于预测的图像处理
公开(公告)号：US20130011059A1
公开(公告)日：2013-01-10
申请号：US13619127
申请日：2012-09-14
申请人： Jacob Ström , Per Wennersten , Tomas Akenine-Moller , Jim Rasmusson
发明人： Jacob Ström , Per Wennersten , Tomas Akenine-Moller , Jim Rasmusson
IPC分类号： G06K9/36
CPC分类号： G06T9/00 , H04N19/105 , H04N19/124 , H04N19/14 , H04N19/15 , H04N19/152 , H04N19/176 , H04N19/182 , H04N19/186 , H04N19/192 , H04N19/426 , H04N19/46 , H04N19/593
摘要： A pixel block is compressed by providing a respective color component prediction for each pixel in the block. A difference between color components of two neighboring pixels is calculated and compared to a threshold. If the difference is smaller than the threshold, the prediction is calculated based on a first linear combination of the color components of these two neighboring pixels. However, if the difference exceeds the threshold, a second or third linear combination of the color components of the neighboring pixels is employed in the prediction. A guiding bit associated with the selected linear combination may be used. A prediction error is calculated based on the color component of the pixel and the provided prediction. The compressed block comprises an encoded representation of the prediction error and any guiding bit.
摘要翻译：通过为块中的每个像素提供相应的颜色分量预测来压缩像素块。计算两个相邻像素的颜色分量之间的差异并将其与阈值进行比较。如果差小于阈值，则基于这两个相邻像素的颜色分量的第一线性组合来计算预测。然而，如果差异超过阈值，则在预测中采用相邻像素的颜色分量的第二或第三线性组合。可以使用与所选择的线性组合相关联的引导位。基于像素的颜色分量和所提供的预测来计算预测误差。压缩块包括预测误差和任何引导位的编码表示。

3. 发明申请

US20110026820A1 Prediction-Based Image Processing 有权
标题翻译：基于预测的图像处理
公开(公告)号：US20110026820A1
公开(公告)日：2011-02-03
申请号：US12863214
申请日：2008-05-21
申请人： Jacob Strom , Per Wennersten , Tomas Akenine-Moller , Jim Rasmusson
发明人： Jacob Strom , Per Wennersten , Tomas Akenine-Moller , Jim Rasmusson
IPC分类号： G06K9/36
CPC分类号： G06T9/00 , H04N19/105 , H04N19/124 , H04N19/14 , H04N19/15 , H04N19/152 , H04N19/176 , H04N19/182 , H04N19/186 , H04N19/192 , H04N19/426 , H04N19/46 , H04N19/593 , H04N19/98
摘要： A pixel block (300) is compressed by providing a respective color component prediction for each pixel (310-318) in the block (300). A difference between color components of two neighboring pixels (312, 316) is calculated and compared to a threshold. If the difference is smaller than the threshold, the prediction is calculated based on a first linear combination of the color components of these two neighboring pixels (312, 316). However, if the difference exceeds the threshold, a second or third linear combination of the color components of the neighboring pixels (312, 316) is employed a prediction. A guiding bit (470) associated with the selected linear combination. A prediction error is calculated based on the color component of the pixel (318) and the provided prediction. The compressed block (400) comprises an encoded representation (480) of the prediction error and any guiding bit (470).
摘要翻译：通过对块（300）中的每个像素（310-318）提供相应的颜色分量预测来压缩像素块（300）。计算两个相邻像素（312,316）的颜色分量之间的差异并将其与阈值进行比较。如果差值小于阈值，则基于这两个相邻像素（312,316）的颜色分量的第一线性组合来计算预测。然而，如果差超过阈值，则采用相邻像素（312,316）的颜色分量的第二或第三线性组合来进行预测。与所选择的线性组合相关联的引导位（470）。基于像素（318）的颜色分量和所提供的预测来计算预测误差。压缩块（400）包括预测误差的编码表示（480）和任何引导位（470）。

4. 发明授权

US08331664B2 Prediction-based image processing 有权
标题翻译：基于预测的图像处理
公开(公告)号：US08331664B2
公开(公告)日：2012-12-11
申请号：US12863214
申请日：2008-05-21
申请人： Jacob Strom , Per Wennersten , Tomas Akenine-Moller , Jim Rasmusson
发明人： Jacob Strom , Per Wennersten , Tomas Akenine-Moller , Jim Rasmusson
IPC分类号： G06K9/00 , G06K9/36 , G06K9/46 , H04N7/12 , H04N11/02 , H04N11/04
CPC分类号： G06T9/00 , H04N19/105 , H04N19/124 , H04N19/14 , H04N19/15 , H04N19/152 , H04N19/176 , H04N19/182 , H04N19/186 , H04N19/192 , H04N19/426 , H04N19/46 , H04N19/593 , H04N19/98
摘要： A pixel block is compressed by providing a respective color component prediction for each pixel in the block. A difference between color components of two neighboring pixels is calculated and compared to a threshold. If the difference is smaller than the threshold, the prediction is calculated based on a first linear combination of the color components of these two neighboring pixels. However, if the difference exceeds the threshold, a second or third linear combination of the color components of the neighboring pixels is employed in the prediction. A guiding bit associated with the selected linear combination may be used. A prediction error is calculated based on the color component of the pixel and the provided prediction. The compressed block comprises an encoded representation of the prediction error and any guiding bit.
摘要翻译：通过为块中的每个像素提供相应的颜色分量预测来压缩像素块。计算两个相邻像素的颜色分量之间的差异并将其与阈值进行比较。如果差小于阈值，则基于这两个相邻像素的颜色分量的第一线性组合来计算预测。然而，如果差异超过阈值，则在预测中采用相邻像素的颜色分量的第二或第三线性组合。可以使用与所选择的线性组合相关联的引导位。基于像素的颜色分量和所提供的预测来计算预测误差。压缩块包括预测误差和任何引导位的编码表示。

5. 发明授权

US08335385B2 Pixel block processing 有权
标题翻译：像素块处理
公开(公告)号：US08335385B2
公开(公告)日：2012-12-18
申请号：US12863692
申请日：2008-09-17
申请人： Jacob Strom , Tomas Akenine-Moller , Per Wennersten
发明人： Jacob Strom , Tomas Akenine-Moller , Per Wennersten
IPC分类号： G06K9/36
CPC分类号： H04N19/192 , H04N19/115 , H04N19/162 , H04N19/176
摘要： A pixel block (300) is losslessly compressed into a candidate compressed block. If the bit length of the candidate block exceeds a threshold value, the property values of the pixels (310-317) in the block (300) are quantized and the quantized values are losslessly compressed into a new candidate compressed block. The procedure is repeated until a candidate compressed block having good image quality and a bit length below the threshold value is found. A compressed representation (400) of the block (300) is determined based on the found candidate compressed block (420) and an identifier (410) of the used quantization parameter.
摘要翻译：像素块（300）被无损压缩成候选压缩块。如果候选块的比特长度超过阈值，则对块（300）中的像素（310-317）的属性值进行量化，并将量化值无损压缩为新的候选压缩块。重复该过程，直到找到具有良好图像质量和位长度低于阈值的候选压缩块。基于所找到的候选压缩块（420）和所使用的量化参数的标识符（410）来确定块（300）的压缩表示（400）。

6. 发明申请

US20070140554A1 Image processing 有权
标题翻译：图像处理
公开(公告)号：US20070140554A1
公开(公告)日：2007-06-21
申请号：US10582988
申请日：2004-07-08
申请人： Jacob Ström , Tomas Akenine-Moller
发明人： Jacob Ström , Tomas Akenine-Moller
IPC分类号： G06K9/00
CPC分类号： H04N19/98 , H04N19/105 , H04N19/176 , H04N19/184 , H04N19/186
摘要： In an image-encoding scheme, an input image is decomposed into several image blocks (600) comprising multiple image elements (610), e.g. pixels or texels. The image blocks (600) are then encoded into encoded block representations (700). Such a block representation (700) comprises a color codeword (710), an intensity codeword (720) and a sequence (730) of intensity representations. The color codeword (710) is a representation of the colors of the image elements (610) of the block (600). The intensity codeword (720) is a representation of a set of multiple intensity modifiers for modifying the intensity of the image elements (610) in the block (600). The representation sequence (730) includes an intensity representation for each image element (610) in the block (600), where a representation identifies one of intensity modifiers in the intensity modifier set. During decoding, the color and intensity codewords (710, 720) and intensity representations (730) are used to generate a decoded representation of the image elements (610) in the block (600).
摘要翻译：在图像编码方案中，输入图像被分解为包括多个图像元素（610）的若干图像块（600）。像素或纹素。然后将图像块（600）编码为编码块表示（700）。这种块表示（700）包括颜色码字（710），强度码字（720）和强度表示的序列（730）。颜色码字（710）是块（600）的图像元素（610）的颜色的表示。强度码字（720）是用于修改块（600）中的图像元素（610）的强度的一组多重强度修改器的表示。表示序列（730）包括块（600）中的每个图像元素（610）的强度表示，其中表示标识强度修饰符集合中的一个强度修饰符。在解码期间，颜色和亮度码字（710,720）和强度表示（730）用于在块（600）中生成图像元素（610）的解码表示。

7. 发明申请

US20100296745A1 Pixel Block Processing 有权
标题翻译：像素块处理
公开(公告)号：US20100296745A1
公开(公告)日：2010-11-25
申请号：US12863692
申请日：2008-09-17
申请人： Jacob Strom , Tomas Akenine-Moller , Per Wennersten
发明人： Jacob Strom , Tomas Akenine-Moller , Per Wennersten
IPC分类号： G06K9/36
CPC分类号： H04N19/192 , H04N19/115 , H04N19/162 , H04N19/176
摘要： A pixel block (300) is losslessly compressed into a candidate compressed block. If the bit length of the candidate block exceeds a threshold value, the property values of the pixels (310-317) in the block (300) are quantized and the quantized values are losslessly compressed into a new candidate compressed block. The procedure is repeated until a candidate compressed block having good image quality and a bit length below the threshold value is found. A compressed representation (400) of the block (300) is determined based on the found candidate compressed block (420) and an identifier (410) of the used quantization parameter.
摘要翻译：像素块（300）被无损压缩成候选压缩块。如果候选块的比特长度超过阈值，则对块（300）中的像素（310-317）的属性值进行量化，并将量化值无损压缩为新的候选压缩块。重复该过程，直到找到具有良好图像质量和位长度低于阈值的候选压缩块。基于所找到的候选压缩块（420）和使用的量化参数的标识符（410）来确定块（300）的压缩表示（400）。

8. 发明申请

US20110116723A1 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：US20110116723A1
公开(公告)日：2011-05-19
申请号：US12994516
申请日：2009-05-13
申请人： Jim Rasmusson , Tomas Akenine-Moller
发明人： Jim Rasmusson , Tomas Akenine-Moller
IPC分类号： G06K9/36
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 (300) is compressed by determining a reference set of multiple reference property values (10-14). A value index associated with a reference property value of the reference set is assigned to each pixel (310-316) in the pixel block (300) based on the original property value of the pixel (310-316). A prediction of the value index is provided based on the value index assigned to at least one neighboring pixel (314, 316) in the pixel block (300). A prediction error is calculated based on the value index assigned to a pixel (316) and its value index prediction. The compressed pixel block (400) comprises encoded representations (424) of the prediction errors and an encoded representation (410) of the reference set.
摘要翻译：通过确定多个参考属性值（10-14）的参考集来压缩像素块（300）。基于像素（310-316）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（300）中的每个像素（310-316）。基于分配给像素块（300）中的至少一个相邻像素（314,316）的值索引来提供值索引的预测。基于分配给像素（316）的值索引及其值索引预测来计算预测误差。压缩像素块（400）包括预测误差的编码表示（424）和参考集合的编码表示（410）。

9. 发明申请

US20080247641A1 Frame Buffer Compression and Decompression Method for Graphics Rendering 有权
标题翻译：用于图形渲染的帧缓冲区压缩和解压缩方法
公开(公告)号：US20080247641A1
公开(公告)日：2008-10-09
申请号：US11953339
申请日：2007-12-10
申请人： Jim Rasmusson , Tomas Akenine-Moller , Jon Hasselgren , Jacob Munkberg
发明人： Jim Rasmusson , Tomas Akenine-Moller , Jon Hasselgren , Jacob Munkberg
IPC分类号： G06K9/00
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。

10. 发明申请

US20070071333A1 Multi-mode image processing 有权
标题翻译：多模式图像处理
公开(公告)号：US20070071333A1
公开(公告)日：2007-03-29
申请号：US10583453
申请日：2004-12-17
申请人： Jacob Ström , Tomas Akenine-Moller
发明人： Jacob Ström , Tomas Akenine-Moller
IPC分类号： G06K9/36 , G06K9/00
CPC分类号： H04N19/90 , H04N19/12 , H04N19/14 , H04N19/154 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/436 , H04N19/46
摘要： An image encoding and decoding scheme operable according two different modes depending on properties of the processed image is disclosed. In the encoding, an image is decomposed into image blocks (600) comprising image elements (610). The blocks (600) are compressed into block representations (700A, 700B) according to one of two compression modes. A block representation (700A; 700B) comprises two codewords (720A, 730A; 720B, 730B) representing properties of the image elements (610) in the block (600) and a sequence (740A; 740B) of image element associated indices indicative of one of the codewords (720B, 730B) or a property representation generated based on a codeword (730A). The block representation (700A; 700B) also includes a mode index representing the mode, according to which the block representation (700A; 700B) was compressed. This mode index can be provided before, during or after generation of the codewords (720A, 730A; 720B, 730B) and index sequence (740A; 740B). In the decoding, the codewords (720A, 730A; 720B, 730B) and index sequence (740A; 740B) are used to decompress the block representation (700A; 700B) according a decompression mode determined by the mode index (710A; 710B).
摘要翻译：公开了根据处理的图像的属性根据两种不同模式操作的图像编码和解码方案。在编码中，图像被分解为包括图像元素（610）的图像块（600）。根据两种压缩模式之一，块（600）被压缩成块表示（700A，700B）。块表示（700A; 700B）包括表示块（600）中的图像元素（610）的属性的两个码字（720A，730A; 720B，730B）和序列（740A; 740B ）指示码字（720B，730B）中的一个的图像元素相关索引或基于码字（730A）生成的属性表示。块表示（700A; 700B）还包括表示模式的模式索引，根据该模式，块表示（700A; 700B）被压缩。可以在码字（720A，730A; 720B，730B）和索引序列（740A; 740B）生成之前，期间或之后提供该模式索引。在解码中，使用码字（720A，730A; 720B，730B）和索引序列（740A; 740B）根据由所述解码模式确定的解压缩模式来解压缩块表示（700A; 700B）模式指数（710A; 710B）。

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