公开(公告)号：US06389175B1

公开(公告)日：2002-05-14

申请号：US09619709

申请日：2000-07-19

申请人： Kenneth Robert Wood ,  Tristan John Richardson

发明人： Kenneth Robert Wood ,  Tristan John Richardson

IPC分类号： G06K936

CPC分类号： G06K9/50 ,  G06T9/20 ,  H04N19/00 ,  H04N19/93

摘要： A method for encoding digital information to be transmitted from a first device to a second device, wherein the digital information is mapped according to a map of n rows and m columns which define a plurality of cells (n×m) and wherein each of said cells has a pixel value. The method is useful for compressing bitmapped images to be rendered by the simplest of graphics engines. Thus the method is particularly suited to the transmission of images to a relatively slow client on which the images are to be rendered in real time and on which any complex decompression would be too costly for such rendering. Raw compression ratios are comparable to those obtained with standard runlength encoding, but the number of drawing primitive calls required to render the compressed images directly is substantially less. If the size of the largest area exceeds predetermined limits it is subdivided into smaller areas automatically without having to specify the size and position.

摘要翻译： 一种用于编码要从第一设备发送到第二设备的数字信息的方法，其中根据定义多个单元（n×m）的n行m列的映射来映射数字信息，并且其中每个所述单元具有 像素值。 该方法对于压缩由最简单的图形引擎呈现的位图图像是有用的。 因此，该方法特别适合于将图像传输到要在其上实时渲染图像的相对较慢的客户端，并且任何复杂的解压缩对于这种渲染将是太昂贵的。 原始压缩比与使用标准游程长度编码获得的压缩比相当，但是直接渲染压缩图像所需的绘制原始调用数量要小得多。 如果最大面积的尺寸超过预定限制，则会自动将其细分为更小的区域，而无需指定尺寸和位置。

公开(公告)号：US06347158B2

公开(公告)日：2002-02-12

申请号：US09729109

申请日：2000-12-05

申请人： Kenneth Robert Wood ,  Tristan John Richardson

发明人： Kenneth Robert Wood ,  Tristan John Richardson

IPC分类号： G06K936

CPC分类号： H04N19/00 ,  H04N19/20 ,  H04N19/93

摘要： A method for encoding digital information to be transmitted from a first device to a second device, wherein the digital information is mapped according to a map of n rows and m columns which define a plurality of cells (n×m) and wherein each of said cells has a pixel value. The method is useful for compressing bitmapped images to be rendered by the simplest of graphics engines. Thus the method is particularly suited to the transmission of images to a relatively slow client on which the images are to be rendered in real time and on which any complex decompression would be too costly for such rendering. Raw compression ratios are comparable to those obtained with standard run-length encoding, but the number of drawing primitive calls required to render the compressed images directly is substantially less.

摘要翻译： 一种用于编码要从第一设备发送到第二设备的数字信息的方法，其中根据定义多个单元（n×m）的n行m列的映射来映射数字信息，并且其中每个所述单元具有 像素值。 该方法对于压缩由最简单的图形引擎呈现的位图图像是有用的。 因此，该方法特别适合于将图像传输到要在其上实时渲染图像的相对较慢的客户端，并且任何复杂的解压缩对于这种渲染将是太昂贵的。 原始压缩比与使用标准游程长度编码获得的压缩比相当，但是直接渲染压缩图像所需的绘图原始调用数量却大大减少。

公开(公告)号：US06192159B1

公开(公告)日：2001-02-20

申请号：US08994132

申请日：1997-12-19

申请人： Kenneth Robert Wood ,  Tristan John Richardson

发明人： Kenneth Robert Wood ,  Tristan John Richardson

IPC分类号： G06K936

CPC分类号： H04N19/00 ,  H04N19/20 ,  H04N19/93

摘要： A method for encoding digital information to be transmitted from a first device to a second device, wherein the digital information is mapped according to a map of n rows and m columns which define a plurality of cells (n×m) and wherein each of said cells has a pixel value. The method is useful for compressing bitmapped images to be rendered by the simplest of graphics engines, Thus the method is particularly suited to the transmission of images to a relatively slow client on which the images are to be rendered in real time and on which any complex decompression would be too costly for such rendering. Raw compression ratios are comparable to those obtained with standard run-length encoding, but the number of drawing primitive calls required to render the compressed images directly is substantially less.

摘要翻译： 一种用于编码要从第一设备发送到第二设备的数字信息的方法，其中根据定义多个单元（n×m）的n行m列的映射来映射数字信息，并且其中每个所述单元具有 像素值。 该方法对于压缩由最简单的图形引擎呈现的位图图像是有用的。因此，该方法特别适用于将图像传输到要在其上实时渲染图像的相对较慢的客户端，并且在哪个复合体 减压对于这种渲染来说太贵了。 原始压缩比与使用标准游程长度编码获得的压缩比相当，但是直接渲染压缩图像所需的绘图原始调用数量却大大减少。