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1. 发明授权

US6163628A Method of data reduction by means of fractal image coding 失效
$Method of data reduction by means of fractal image coding$
标题翻译：通过分形图像编码减少数据的方法
公开(公告)号：US6163628A
公开(公告)日：2000-12-19
申请号：US639987
申请日：1996-04-26
申请人： Achim Ibenthal , Detlef Gotting , Rolf-Rainer Grigat
发明人： Achim Ibenthal , Detlef Gotting , Rolf-Rainer Grigat
IPC分类号： H04N11/04 , G06T1/00 , G06T9/00 , H03M7/30 , H04N1/41 , H04N9/77 , H04N19/90 , G06K9/36 , G06K9/46
CPC分类号： H04N19/99 , G06T9/001
摘要： In a method of data reduction of a luminance and/or chrominance signal of a digital picture signal by means of fractal image coding, in which method each image of the luminance/chrominance signal is divided into range blocks of n.times.n pixels each, in which a domain block is searched for each range block, which domain block is imageable on the range block with a minimal deviation while using a transformation function, which domain blocks have a larger size than the range blocks, and in which information on the transformation functions is transmitted, from which information the image data are regained at the receiver end in an iterative process, the search is facilitated in that a digital search tree strategy is employed in the search for that domain block which is imageable on a range block with a minimal deviation while using a transformation function.
摘要翻译：在通过分形图像编码对数字图像信号的亮度和/或色度信号进行数据缩减的方法中，在该方法中，亮度/色度信号的每个图像被分成n×n个像素的范围块，其中，搜索每个范围块，使用变换函数，哪个域块具有最小偏差的范围块上的哪个域块是可成像的，哪个域块具有比范围块大的大小，并且其中传输关于变换函数的信息在迭代过程中，从接收机端重新获得图像数据的信息，便于搜索使用数字搜索树策略来搜索可在最小偏差的范围块上成像的域块，而使用转换函数。

2. 发明授权

US5995673A Method of data reduction by means of a fractal image coding and encoder and decoder for performing the method 失效
$Method of data reduction by means of a fractal image coding and encoder and decoder for performing the method$
公开(公告)号：US5995673A
公开(公告)日：1999-11-30
申请号：US639860
申请日：1996-04-26
申请人： Achim Ibenthal , Detlef Gotting , Rolf-Rainer Grigat
发明人： Achim Ibenthal , Detlef Gotting , Rolf-Rainer Grigat
IPC分类号： G06T9/00 , H03M7/30 , H04N1/41 , H04N11/04 , H04N19/90 , G06K9/36 , G06K9/46
CPC分类号： H04N19/99 , G06T9/001 , H04N11/044
摘要： In a method of data reduction of a luminance and/or chrominance signal of a digital picture signal by means of fractal image coding, in which method each image of the luminance/chrominance signal is divided into range blocks of n.times.n pixels each, in which a domain block is searched for each range block, which domain block is imageable on the range block with a minimal deviation while using a transformation function, which domain blocks have twice the size of the range blocks, and in which information on the transformation functions is transmitted, from which information the image data are regained at the receiver end in an iterative process, the search for appropriate domain blocks is facilitated in that the data of each range block are examined on geometrical basis functions which are possibly satisfactory approximations of the data structure of the range block, in that a difference value is computed from the basis function found for the best approximation of the data structure of the range block and the data of the range block, which difference value represents a residual roughness, in that the data of the domain blocks are examined on geometrical basis functions which are possibly satisfactory approximations of the data structure of the domain block, in that a difference value is computed from the basis function found for the best approximation of the data structure of the domain block and the data of the domain block, which difference value represents a residual roughness, in that the search for the domain block which is imageable on a range block with a minimal deviation, and the associated transformation function is performed with reference to the computed difference values of the range block and the computed difference values of the domain blocks, and in that information on the mutually balanced basis functions of this block and of the most favorable domain block, as well as the transformation function, by means of which the most favorable domain block is imageable on the range block, is transmitted for each range block as a data-reduced data current instead of the luminance/chrominance signal.

3. 发明授权

US5850262A Method of fractal image coding and arrangements for performing the method 失效
$Method of fractal image coding and arrangements for performing the method$
标题翻译：分形图像编码方法及其执行方法
公开(公告)号：US5850262A
公开(公告)日：1998-12-15
申请号：US838481
申请日：1997-04-07
申请人： Achim Ibenthal , Detlef Gotting , Rolf-Rainer Grigat
发明人： Achim Ibenthal , Detlef Gotting , Rolf-Rainer Grigat
IPC分类号： G06T9/00 , H04N19/00 , H04N19/54 , H04N19/90 , H04N19/94 , H04N7/36
CPC分类号： H04N19/00 , H04N19/54 , H04N19/94 , H04N19/99
摘要： To achieve an enhanced data reduction, a method of fractal image coding, in which method an image to be encoded is divided into range blocks which do not overlap and jointly cover the image contents completely, in which domain blocks comprising areas of the image contents in their original form or in a transformed form are generated from the image contents, and all areas of the image contents are covered by at least one domain block, for each range block the domain block most similar to the range block being searched, and the addresses of the domain blocks found as the most similar and possibly the transform functions used for their generation being transmitted instead of the data of the range blocks, is characterized in that, in a sequence of images, the fractal image coding performed exclusively within the images is only performed with basic images comprised in the image sequence at selectable time intervals, in that, for intermediate images provided between the basic images, the same range and domain block division is used as for the basic images, and in that, individually for each range block in a search area, that domain block is searched in an intermediate image which was found as the most similar in the previous image for the range block of the same position, and in that, if said domain block is found in the search area, the displacement vectors of this block relative to the domain block found as the most similar in the previous image are transmitted instead of the address and possibly the transform function.
摘要翻译：为了实现增强的数据缩减，分形图像编码的方法中，将要编码的图像划分为不重叠的范围块，并且完全共同地覆盖图像内容，其中包括图像内容的区域的域块它们的原始形式或以变换形式从图像内容产生，并且图像内容的所有区域被至少一个域块覆盖，对于每个范围块，与正在搜索的范围块最相似的域块，以及地址被发现是最相似的并且可能地用于其生成的变换函数而不是范围块的数据的域块的特征在于，在图像序列中，专门在图像内执行的分形图像编码是仅以可选择的时间间隔包含在图像序列中的基本图像执行，其中，对于在基本图像之间提供的中间图像，sam 使用范围和域块划分用于基本图像，并且对于搜索区域中的每个范围块单独地搜索该域块，在中间图像中被搜索为在前一图像中最相似的相同位置的范围块，并且如果在搜索区域中找到所述域块，则发送该块相对于在先前图像中最相似的域块的位移向量而不是地址，并且可能变换函数。

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