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公开(公告)号：US07526125B2
公开(公告)日：2009-04-28
申请号：US12029406
申请日：2008-02-11
CPC分类号： G06T9/00 , G06T9/005 , H04N19/176 , H04N19/186 , H04N19/21 , H04N19/593 , H04N19/90
摘要： The present invention provides for a method of and apparatus for compressing and uncompressing image data. According to one embodiment of the present invention, the method of compressing a color cell comprises the steps of: defining at least four luminance levels of the color cell; generating a bitmask for the color cell, the bitmask having a plurality of entries each corresponding to a respective one of the pixels, each of the entries for storing data identifying one of the luminance levels associated with a corresponding one of the pixels; calculating a first average color of pixels associated with a first one of the luminance levels; calculating a second average color of pixels associated with a second one of the luminance levels; and storing the bitmask in association with the first average color and the second average color. In one embodiment, the color cell includes a matrix of 4×4 pixels, the bitmask includes 32-bits and each of the color values includes 16-bits such that a compression rate of 4-bits per pixel is achieved. The present invention is particularly applicable to compress texture data such that the texture data can be more efficiently cached and moved during texture mapping. In that embodiment, the present invention can also support the compression of luminance, intensity and alpha textures.
摘要翻译： 本发明提供了一种用于压缩和解压缩图像数据的方法和装置。 根据本发明的一个实施例，压缩彩色单元的方法包括以下步骤：定义彩色单元的至少四个亮度级; 为所述彩色单元生成位掩码，所述位掩码具有多个条目，每个条目各自对应于所述像素中的相应一个像素，所述条目中的每一个用于存储识别与所述像素中的相应一个像素相关联的亮度级中的一个的数据; 计算与所述亮度级中的第一个相关联的像素的第一平均颜色; 计算与第二个亮度级相关联的像素的第二平均颜色; 以及存储与第一平均颜色和第二平均颜色相关联的位掩码。 在一个实施例中，彩色单元包括4×4像素的矩阵，位掩码包括32位，并且每个颜色值包括16位，使得实现每像素4位的压缩率。 本发明特别适用于压缩纹理数据，使得在纹理映射期间可以更有效地缓存和移动纹理数据。 在该实施例中，本发明还可以支持亮度，强度和α纹理的压缩。
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公开(公告)号：US07058218B1
公开(公告)日：2006-06-06
申请号：US09162244
申请日：1998-09-28
IPC分类号： G06K9/00
CPC分类号： G06T9/00 , G06T9/005 , H04N19/176 , H04N19/186 , H04N19/21 , H04N19/593 , H04N19/90
摘要： The present invention provides for a method of and apparatus for compressing and uncompressing image data. According to one embodiment of the present invention, the method of compressing a color cell comprises the steps of: defining at least four luminance levels of the color cell; generating a bitmask for the color cell, the bitmask having a plurality of entries each corresponding to a respective one of the pixels, each of the entries for storing data identifying one of the luminance levels associated with a corresponding one of the pixels; calculating a first average color of pixels associated with a first one of the luminance levels; calculating a second average color of pixels associated with a second one of the luminance levels; and storing the bitmask in association with the first average color and the second average color. In one embodiment, the color cell includes a matrix of 4x4 pixels, the bitmask includes 32-bits and each of the color values includes 16-bits such that a compression rate of 4-bits per pixel is achieved. The present invention is particularly applicable to compress texture data such that the texture data can be more efficiently cached and moved during texture mapping. In that embodiment, the present invention can also support the compression of luminance, intensity and alpha textures.
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公开(公告)号：US20120249562A1
公开(公告)日：2012-10-04
申请号：US13494138
申请日：2012-06-12
申请人： John M. Airey , Mark S. Peercy , Robert A. Drebin , John Montrym , David L. Dignam , Christopher J. Migdal , Danny D. Loh
发明人： John M. Airey , Mark S. Peercy , Robert A. Drebin , John Montrym , David L. Dignam , Christopher J. Migdal , Danny D. Loh
IPC分类号： G06F13/14
摘要： A floating point rasterization and frame buffer in a computer system graphics program. The rasterization, fog, lighting, texturing, blending, and antialiasing processes operate on floating point values. In one embodiment, a 16-bit floating point format consisting of one sign bit, ten mantissa bits, and five exponent bits (s10e5), is used to optimize the range and precision afforded by the 16 available bits of information. In other embodiments, the floating point format can be defined in the manner preferred in order to achieve a desired range and precision of the data stored in the frame buffer. The final floating point values corresponding to pixel attributes are stored in a frame buffer and eventually read and drawn for display. The graphics program can operate directly on the data in the frame buffer without losing any of the desired range and precision of the data.
摘要翻译： 计算机系统图形程序中的浮点光栅化和帧缓冲区。 光栅化，雾化，照明，纹理，混合和抗锯齿处理工作在浮点值上。 在一个实施例中，使用由一个符号位，十个尾数位和五个指数位（s10e5）组成的16位浮点格式来优化由16个可用位信息提供的范围和精度。 在其他实施例中，可以以优选的方式定义浮点格式，以便实现存储在帧缓冲器中的数据的期望范围和精度。 对应于像素属性的最终浮点值存储在帧缓冲器中，并最终读取并绘制以进行显示。 图形程序可以直接对帧缓冲器中的数据进行操作，而不会丢失数据的所需范围和精度。
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公开(公告)号：US20120249561A1
公开(公告)日：2012-10-04
申请号：US13494135
申请日：2012-06-12
申请人： John M. Airey , Mark S. Peercy , Robert A. Drebin , John Montrym , David L. Dignam , Christopher J. Migdal , Danny D. Loh
发明人： John M. Airey , Mark S. Peercy , Robert A. Drebin , John Montrym , David L. Dignam , Christopher J. Migdal , Danny D. Loh
IPC分类号： G06F13/14
摘要： A floating point rasterization and frame buffer in a computer system graphics program. The rasterization, fog, lighting, texturing, blending, and antialiasing processes operate on floating point values. In one embodiment, a 16-bit floating point format consisting of one sign bit, ten mantissa bits, and five exponent bits (s10e5), is used to optimize the range and precision afforded by the 16 available bits of information. In other embodiments, the floating point format can be defined in the manner preferred in order to achieve a desired range and precision of the data stored in the frame buffer. The final floating point values corresponding to pixel attributes are stored in a frame buffer and eventually read and drawn for display. The graphics program can operate directly on the data in the frame buffer without losing any of the desired range and precision of the data.
摘要翻译： 计算机系统图形程序中的浮点光栅化和帧缓冲区。 光栅化，雾化，照明，纹理，混合和抗锯齿处理工作在浮点值上。 在一个实施例中，使用由一个符号位，十个尾数位和五个指数位（s10e5）组成的16位浮点格式来优化由16个可用位信息提供的范围和精度。 在其他实施例中，可以以优选的方式定义浮点格式，以便实现存储在帧缓冲器中的数据的期望范围和精度。 对应于像素属性的最终浮点值存储在帧缓冲器中，并最终读取并绘制以进行显示。 图形程序可以直接对帧缓冲器中的数据进行操作，而不会丢失数据的所需范围和精度。
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5.发明授权Display system having floating point rasterization and floating point framebuffering 有权显示系统具有浮点光栅化和浮点帧缓冲公开(公告)号：US08144158B2
公开(公告)日：2012-03-27
申请号：US13004650
申请日：2011-01-11
申请人： John M. Airey , Mark S. Peercy , Robert A. Drebin , John Montrym , David L. Dignam , Christopher J. Migdal , Danny D. Loh
发明人： John M. Airey , Mark S. Peercy , Robert A. Drebin , John Montrym , David L. Dignam , Christopher J. Migdal , Danny D. Loh
摘要： A floating point rasterization and frame buffer in a computer system graphics program. The rasterization, fog, lighting, texturing, blending, and antialiasing processes operate on floating point values. In one embodiment, a 16-bit floating point format consisting of one sign bit, ten mantissa bits, and five exponent bits (s10e5), is used to optimize the range and precision afforded by the 16 available bits of information. In other embodiments, the floating point format can be defined in the manner preferred in order to achieve a desired range and precision of the data stored in the frame buffer. The final floating point values corresponding to pixel attributes are stored in a frame buffer and eventually read and drawn for display. The graphics program can operate directly on the data in the frame buffer without losing any of the desired range and precision of the data.
摘要翻译： 计算机系统图形程序中的浮点光栅化和帧缓冲区。 光栅化，雾化，照明，纹理，混合和抗锯齿处理工作在浮点值上。 在一个实施例中，使用由一个符号位，十个尾数位和五个指数位（s10e5）组成的16位浮点格式来优化由16个可用位信息提供的范围和精度。 在其他实施例中，可以以优选的方式定义浮点格式，以便实现存储在帧缓冲器中的数据的期望范围和精度。 对应于像素属性的最终浮点值存储在帧缓冲器中，并最终读取并绘制以进行显示。 图形程序可以直接对帧缓冲器中的数据进行操作，而不会丢失数据的所需范围和精度。
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6.发明申请Display System Having Floating Point Rasterization and Floating Point Framebuffering 审中-公开显示系统具有浮点光栅和浮点帧缓冲公开(公告)号：US20100079471A1
公开(公告)日：2010-04-01
申请号：US12632262
申请日：2009-12-07
申请人： John M. Airey , Mark S. Peercy , Robert A. Drebin , John Montrym , David L. Dignam , Christopher J. Migdal , Danny D. Loh
发明人： John M. Airey , Mark S. Peercy , Robert A. Drebin , John Montrym , David L. Dignam , Christopher J. Migdal , Danny D. Loh
IPC分类号： G06F13/14
摘要： A floating point rasterization and frame buffer in a computer system graphics program. The rasterization, fog, lighting, texturing, blending, and antialiasing processes operate on floating point values. In one embodiment, a 16-bit floating point format consisting of one sign bit, ten mantissa bits, and five exponent bits (s10e5), is used to optimize the range and precision afforded by the 16 available bits of information. In other embodiments, the floating point format can be defined in the manner preferred in order to achieve a desired range and precision of the data stored in the frame buffer. The final floating point values corresponding to pixel attributes are stored in a frame buffer and eventually read and drawn for display. The graphics program can operate directly on the data in the frame buffer without losing any of the desired range and precision of the data.
摘要翻译： 计算机系统图形程序中的浮点光栅化和帧缓冲区。 光栅化，雾化，照明，纹理，混合和抗锯齿处理工作在浮点值上。 在一个实施例中，使用由一个符号位，十个尾数位和五个指数位（s10e5）组成的16位浮点格式来优化由16个可用位信息提供的范围和精度。 在其他实施例中，可以以优选的方式定义浮点格式，以便实现存储在帧缓冲器中的数据的期望范围和精度。 对应于像素属性的最终浮点值存储在帧缓冲器中，并最终读取并绘制以进行显示。 图形程序可以直接对帧缓冲器中的数据进行操作，而不会丢失数据的所需范围和精度。
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公开(公告)号：US20120256933A1
公开(公告)日：2012-10-11
申请号：US13494783
申请日：2012-06-12
申请人： John M. Airey , Mark S. Peercy , Robert A. Drebin , John Montrym , David L. Dignam , Christopher J. Migdal , Danny D. Loh
发明人： John M. Airey , Mark S. Peercy , Robert A. Drebin , John Montrym , David L. Dignam , Christopher J. Migdal , Danny D. Loh
IPC分类号： G09G5/39
摘要： A floating point rasterization and frame buffer in a computer system graphics program. The rasterization, fog, lighting, texturing, blending, and antialiasing processes operate on floating point values. In one embodiment, a 16-bit floating point format consisting of one sign bit, ten mantissa bits, and five exponent bits (s10e5), is used to optimize the range and precision afforded by the 16 available bits of information. In other embodiments, the floating point format can be defined in the manner preferred in order to achieve a desired range and precision of the data stored in the frame buffer. The final floating point values corresponding to pixel attributes are stored in a frame buffer and eventually read and drawn for display. The graphics program can operate directly on the data in the frame buffer without losing any of the desired range and precision of the data.
摘要翻译： 计算机系统图形程序中的浮点光栅化和帧缓冲区。 光栅化，雾化，照明，纹理，混合和抗锯齿处理工作在浮点值上。 在一个实施例中，使用由一个符号位，十个尾数位和五个指数位（s10e5）组成的16位浮点格式来优化由16个可用位信息提供的范围和精度。 在其他实施例中，可以以优选的方式定义浮点格式，以便实现存储在帧缓冲器中的数据的期望范围和精度。 对应于像素属性的最终浮点值存储在帧缓冲器中，并最终读取并绘制以进行显示。 图形程序可以直接对帧缓冲器中的数据进行操作，而不会丢失数据的所需范围和精度。
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公开(公告)号：US20120249548A1
公开(公告)日：2012-10-04
申请号：US13494231
申请日：2012-06-12
申请人： John M. Airey , Mark S. Peercy , Robert A. Drebin , John Montrym , David L. Dignam , Christopher J. Migdal , Danny D. Loh
发明人： John M. Airey , Mark S. Peercy , Robert A. Drebin , John Montrym , David L. Dignam , Christopher J. Migdal , Danny D. Loh
IPC分类号： G06T15/00
摘要： A floating point rasterization and frame buffer in a computer system graphics program. The rasterization, fog, lighting, texturing, blending, and antialiasing processes operate on floating point values. In one embodiment, a 16-bit floating point format consisting of one sign bit, ten mantissa bits, and five exponent bits (s10e5), is used to optimize the range and precision afforded by the 16 available bits of information. In other embodiments, the floating point format can be defined in the manner preferred in order to achieve a desired range and precision of the data stored in the frame buffer. The final floating point values corresponding to pixel attributes are stored in a frame buffer and eventually read and drawn for display. The graphics program can operate directly on the data in the frame buffer without losing any of the desired range and precision of the data.
摘要翻译： 计算机系统图形程序中的浮点光栅化和帧缓冲区。 光栅化，雾化，照明，纹理，混合和抗锯齿处理工作在浮点值上。 在一个实施例中，使用由一个符号位，十个尾数位和五个指数位（s10e5）组成的16位浮点格式来优化由16个可用位信息提供的范围和精度。 在其他实施例中，可以以优选的方式定义浮点格式，以便实现存储在帧缓冲器中的数据的期望范围和精度。 对应于像素属性的最终浮点值存储在帧缓冲器中，并最终读取并绘制以进行显示。 图形程序可以直接对帧缓冲器中的数据进行操作，而不会丢失数据的所需范围和精度。
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9.发明申请Display System Having Floating Point Rasterization and Floating Point Framebuffering 审中-公开显示系统具有浮点光栅和浮点帧缓冲公开(公告)号：US20080284786A1
公开(公告)日：2008-11-20
申请号：US12168578
申请日：2008-07-07
申请人： John M. Airey , Mark S. Peercy , Robert A. Drebin , John Montrym , David L. Dignam , Christopher J. Migdal , Danny D. Loh
发明人： John M. Airey , Mark S. Peercy , Robert A. Drebin , John Montrym , David L. Dignam , Christopher J. Migdal , Danny D. Loh
IPC分类号： G09G5/36
摘要： A floating point rasterization and frame buffer in a computer system graphics program. The rasterization, fog, lighting, texturing, blending, and antialiasing processes operate on floating point values. In one embodiment, a 16-bit floating point format consisting of one sign bit, ten mantissa bits, and five exponent bits (s10e5), is used to optimize the range and precision afforded by the 16 available bits of information. In other embodiments, the floating point format can be defined in the manner preferred in order to achieve a desired range and precision of the data stored in the frame buffer. The final floating point values corresponding to pixel attributes are stored in a frame buffer and eventually read and drawn for display. The graphics program can operate directly on the data in the frame buffer without losing any of the desired range and precision of the data.
摘要翻译： 计算机系统图形程序中的浮点光栅化和帧缓冲区。 光栅化，雾化，照明，纹理，混合和抗锯齿处理工作在浮点值上。 在一个实施例中，使用由一个符号位，十个尾数位和五个指数位（s10e5）组成的16位浮点格式来优化由16个可用位信息提供的范围和精度。 在其他实施例中，可以以优选的方式定义浮点格式，以便实现存储在帧缓冲器中的数据的期望范围和精度。 对应于像素属性的最终浮点值存储在帧缓冲器中，并最终读取并绘制以进行显示。 图形程序可以直接对帧缓冲器中的数据进行操作，而不会丢失数据的所需范围和精度。
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公开(公告)号：US06650327B1
公开(公告)日：2003-11-18
申请号：US09098041
申请日：1998-06-16
申请人： John M. Airey , Mark S. Peercy , Robert A. Drebin , John Montrym , David L. Dignam , Christopher J. Migdal , Danny D. Loh
发明人： John M. Airey , Mark S. Peercy , Robert A. Drebin , John Montrym , David L. Dignam , Christopher J. Migdal , Danny D. Loh
IPC分类号： G06T5391
摘要： A floating point rasterization and frame buffer in a computer system graphics program. The rasterization, fog, lighting, texturing, blending, and antialiasing processes operate on floating point values. In one embodiment, a 16-bit floating point format consisting of one sign bit, ten mantissa bits, and five exponent bits (s10e5), is used to optimize the range and precision afforded by the 16 available bits of information. In other embodiments, the floating point format can be defined in the manner preferred in order to achieve a desired range and precision of the data stored in the frame buffer. The final floating point values corresponding to pixel attributes are stored in a frame buffer and eventually read and drawn for display. The graphics program can operate directly on the data in the frame buffer without losing any of the desired range and precision of the data.
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