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公开(公告)号：EP0838785B1
公开(公告)日：2004-02-04
申请号：EP97308166.4
申请日：1997-10-15
IPC分类号： G06T11/00
CPC分类号： G06T1/005 , G06T2201/0065 , H04N1/32203 , H04N1/32208 , H04N1/32251 , H04N2201/3233 , H04N2201/327
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公开(公告)号：EP0177640B1
公开(公告)日：1993-02-17
申请号：EP84115006.3
申请日：1984-12-11
IPC分类号： G06F15/62
CPC分类号： G06T3/602 , H04N1/3935
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公开(公告)号：EP0149120A3
公开(公告)日：1988-01-13
申请号：EP84115007
申请日：1984-12-11
IPC分类号： G06F15/62
CPC分类号： G06T3/4023
摘要： A method for expanding a binary image includes the steps of: storing the image in bit sequence; inserting for each string of 5 bits along a first axis one or more expansion bits, to convert each said string of 5 bits to a string of 6 bits; assigning a value to each expansion bit generated by the above step; inserting one or more rows of expansion bits for each 5 rows of bits along a second axls of the image to convert each 5 rows of bits to 6 rows of bits along the second axis of the image; assigning a value to each expansion bit generated by the above steps; storing the enlarged image generated by the above steps.
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公开(公告)号：EP0149119A3
公开(公告)日：1987-12-02
申请号：EP84115005
申请日：1984-12-11
IPC分类号： G06F15/62
CPC分类号： G06T3/602
摘要： Method for rotating an image by 90 degrees includes the steps of: storing the image in a raster format arranged in r rows by c columns, image information in each row being stored in a number of bytes, each byte having b bits, there being c/b bytes in each row of the raster format; moving a block of the image into a temporary storage, there being n rows by m columns in the block; separating each image block into groups of bytes of rotatable size; determining for each group if all bits are the same value; rotating each group that does not have all bits the same value; storing each rotated group in an output area of the raster storage; repeating the above steps for all remaining blocks of the image.
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公开(公告)号：EP0952728B1
公开(公告)日：2009-07-01
申请号：EP99302779.6
申请日：1999-04-09
发明人： Coppersmith, Don , Mintzer, Frederick Cole , Tresser, Charles P. , Wu, Chai Wah , Yeung, Minerva Ming-Yee
IPC分类号： H04N1/32
CPC分类号： G06T1/0064 , H04N1/32144 , H04N1/32213 , H04N1/32309 , H04N21/23892 , H04N21/8358 , H04N2201/3214 , H04N2201/3215 , H04N2201/3225 , H04N2201/3226 , H04N2201/3233 , H04N2201/3235 , H04N2201/327
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16.发明公开Method and apparatus for watermarking data sets 有权Verdahren undGerätzum Erzeugen von WasserzeichenfürDatensätze
公开(公告)号：EP0952728A2
公开(公告)日：1999-10-27
申请号：EP99302779.6
申请日：1999-04-09
发明人： Coppersmith, Don , Mintzer, Frederick Cole , Tresser, Charles P. , Wu, Chai Wah , Yeung, Minerva Ming-Yee
IPC分类号： H04N1/32
CPC分类号： G06T1/0064 , H04N1/32144 , H04N1/32213 , H04N1/32309 , H04N21/23892 , H04N21/8358 , H04N2201/3214 , H04N2201/3215 , H04N2201/3225 , H04N2201/3226 , H04N2201/3233 , H04N2201/3235 , H04N2201/327
摘要： A watermarking scheme which allows the watermarked image to be authenticated by an authentication agent without revealing the human-readable content of the image. There is disclosed an approach which combines privacy control with watermarking and authentication mechanisms. The watermark can be made to be imperceptible to humans. Public key cryptography allows the authentication agent to authenticate without being able to watermark an image.
摘要翻译： 一种水印方案，其允许水印图像由认证代理认证，而不显示图像的人可读内容。 公开了一种将隐私控制与水印和认证机制相结合的方法。 水印可以被人们所忽视。 公共密钥加密允许认证代理进行认证，而不能对图像进行水印。
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公开(公告)号：EP0501023A2
公开(公告)日：1992-09-02
申请号：EP91121001.1
申请日：1991-12-06
IPC分类号： H04N1/46
摘要： A system and method for improving the quality of the output of a full-color image on a reproduction device, such as a display on a monitor or printout from a printer, that only consists of a small number of colors in comparison to the number of colors represented by the input signals. The disclosure involves specifying a new quantization method for multi-color images, rendered with orthogonal or separable color image palettes, that takes advantage of the calculations done by error diffusion. Accordingly, the image input signals are processed using the quantization error generated by one color component of a given pixel to influence the quantization of subsequent color components of the same pixel, and in such a way that the color image, so rendered, appears less grainy.
摘要翻译： 一种系统和方法，用于提高再现设备上的全色图像的输出质量，例如显示器上的显示器或打印机的打印输出，其仅与少数颜色 由输入信号表示的颜色。 本公开涉及为使用正交或可分离彩色图像调色板呈现的多色图像指定新的量化方法，其利用通过误差扩散进行的计算。 因此，使用给定像素的一个颜色分量产生的量化误差来处理图像输入信号，以影响相同像素的后续颜色分量的量化，并且使得所呈现的彩色图像显得较少颗粒状 。
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公开(公告)号：EP0177640A3
公开(公告)日：1986-07-23
申请号：EP84115006
申请日：1984-12-11
IPC分类号： G06F15/62
CPC分类号： G06T3/602 , H04N1/3935
摘要： A binary image is reduced in size by method including the steps of: storing the image in bit sequence; dividing the image into transposable blocks; transposing by look up table, for each block having any nonzero data, each group of 6 bits along a first axis to a group fo 5 bits; transposing by look up table, for each block having any nonzero data, each group of 6 bits along a second axis to a group of 5 bits; storing said transposed blocks.
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公开(公告)号：EP0149120A2
公开(公告)日：1985-07-24
申请号：EP84115007.1
申请日：1984-12-11
IPC分类号： G06F15/62
CPC分类号： G06T3/4023
摘要： A method for expanding a binary image includes the steps of: storing the image in bit sequence; inserting for each string of 5 bits along a first axis one or more expansion bits, to convert each said string of 5 bits to a string of 6 bits; assigning a value to each expansion bit generated by the above step; inserting one or more rows of expansion bits for each 5 rows of bits along a second axls of the image to convert each 5 rows of bits to 6 rows of bits along the second axis of the image; assigning a value to each expansion bit generated by the above steps; storing the enlarged image generated by the above steps.
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