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

IPC: H04N9/77 ,  G06T7/00 ,  G09G5/02 ,  G09G5/06 ,  G09G5/36 ,  H04N1/41 ,  H04N1/46 ,  H04N1/64

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.

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.

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.