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公开(公告)号：JP2001255866A
公开(公告)日：2001-09-21
申请号：JP2001017804
申请日：2001-01-26
Applicant: LUCENT TECHNOLOGIES INC
Inventor： MOJSILOVIC ALEKSANDRA , SOLJANIN EMINA
Abstract: PROBLEM TO BE SOLVED: To provide a color quantizing method capable of performing an image processing algorithm which is of simple and of high speed in calculation in a color symbol level. SOLUTION: This method assigning color symbols to image pixels includes a step selecting a luminance value from the discrete set of quantized luminance values and a step selecting a chrominance value from a discrete set in which quantized chrominance values are arranged orderly and a step constituting color symbols from the index of the selected luminance value and the index of the order position of the selected chrominance value. In this embodiment, respective discrete chrominance values are selected from the Fibonacci lattice on the constant luminance plane in perceptively uniform color space of a Lab or a Luv or the like.
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公开(公告)号：JP2001036410A
公开(公告)日：2001-02-09
申请号：JP2000160158
申请日：2000-05-30
Applicant: LUCENT TECHNOLOGIES INC
Inventor： SOLJANIN EMINA
Abstract: PROBLEM TO BE SOLVED: To provide an encoding system combining appropriate redundancy and appropriate disparity by dividing a 16 bit input word into 2 eight bit words and mapping respective bytes on a nine bit word. SOLUTION: A 16 bit input word is divided into two bytes, namely, into two eight twit words. The respective bytes are mapped on the nine bit word. The map of the respective bytes in mapping depends on the disparity and decision whether the map is inverted or not depends on a digital total (RDS) at the time of operating output. A disparity checker 30 calculates a block digital total BDS0 on an input work x0 and a block digital total BDS1 on an input word x1 and inputs them to an algorithm 35. A loop 40 expresses the feedback of a digital total (RDS) at the time of an execution in the algorithm 35 and the value of feedback is equal to the addition of BDS of output at present to a value just before.
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Patent Agency Ranking
公开(公告)号：DE60000636D1
公开(公告)日：2002-11-28
申请号：DE60000636
申请日：2000-05-23
Applicant: LUCENT TECHNOLOGIES INC
Inventor： SOLJANIN EMINA
Abstract: A 16B/18B low disparity code is described. The 16-bit input word is split into two bytes, i.e., into two 8-bit words, and each byte is mapped to a 9-bit word. The image of each input byte under the mapping depends at least in part on its disparity, and also in some cases on the disparity of the other word. Certain of the images under the mapping are then inverted. The decision whether to invert an image depends, at least in part, on the running digital sum (RDS) of the output. The RDS is the sum of all 1's in the data stream from its beginning (or from a designated starting point). Significantly, all possible input words are grouped, by disparity, into four categories. The rule for mapping of input words is different for each of the four categories.
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公开(公告)号：DE60000636T2
公开(公告)日：2003-06-26
申请号：DE60000636
申请日：2000-05-23
Applicant: LUCENT TECHNOLOGIES INC
Inventor： SOLJANIN EMINA
Abstract: A 16B/18B low disparity code is described. The 16-bit input word is split into two bytes, i.e., into two 8-bit words, and each byte is mapped to a 9-bit word. The image of each input byte under the mapping depends at least in part on its disparity, and also in some cases on the disparity of the other word. Certain of the images under the mapping are then inverted. The decision whether to invert an image depends, at least in part, on the running digital sum (RDS) of the output. The RDS is the sum of all 1's in the data stream from its beginning (or from a designated starting point). Significantly, all possible input words are grouped, by disparity, into four categories. The rule for mapping of input words is different for each of the four categories.
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公开(公告)号：DE60001260T2
公开(公告)日：2003-11-06
申请号：DE60001260
申请日：2000-07-31
Applicant: LUCENT TECHNOLOGIES INC
Inventor： MOJSILOVIC ALEKSANDRA , SOLJANIN EMINA
IPC: H04N9/77 , G06T7/00 , G09G5/02 , G09G5/06 , G09G5/36 , H04N1/41 , H04N1/46 , H04N1/64 , H04N1/60
Abstract: A method for assigning a color symbol to an image pixel comprises selecting a luminance value from a discrete set of quantized luminance values; selecting a chrominance value from an ordered discrete set of quantized chrominance values; and composing a color symbol from an index of the selected luminance value and an index of an ordinal position of the selected chrominance value. In particular embodiments of the invention, each discrete chrominance value is selected from a Fibonacci lattice on a constant-luminance plane in a perceptually uniform color space such as Lab or Luv.
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公开(公告)号：DE60001260D1
公开(公告)日：2003-02-27
申请号：DE60001260
申请日：2000-07-31
Applicant: LUCENT TECHNOLOGIES INC
Inventor： MOJSILOVIC ALEKSANDRA , SOLJANIN EMINA
IPC: H04N9/77 , G06T7/00 , G09G5/02 , G09G5/06 , G09G5/36 , H04N1/41 , H04N1/46 , H04N1/64 , H04N1/60
Abstract: A method for assigning a color symbol to an image pixel comprises selecting a luminance value from a discrete set of quantized luminance values; selecting a chrominance value from an ordered discrete set of quantized chrominance values; and composing a color symbol from an index of the selected luminance value and an index of an ordinal position of the selected chrominance value. In particular embodiments of the invention, each discrete chrominance value is selected from a Fibonacci lattice on a constant-luminance plane in a perceptually uniform color space such as Lab or Luv.
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公开(公告)号：DE602005009414D1
公开(公告)日：2008-10-16
申请号：DE602005009414
申请日：2005-01-31
Applicant: LUCENT TECHNOLOGIES INC
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