Interpolation method for calculating gamut boundaries of digital imaging output devices

XU Yan-fang; LIU Wen-yao

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Interpolation method for calculating gamut boundaries of digital imaging output devices

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- Interpolation method for calculating gamut boundaries of digital imaging output devices
- Optics and Precision Engineering Vol. 14, Issue 2, Pages: 261-265(2006)
- 作者机构：
  
  1. 北京印刷学院印刷与包装工程学院北京,102600
  2. 天津大学光电信息技术科学教育部重点实验室天津,300072
- 作者简介：
- 基金信息：
- DOI：
  CLC： TP334.22;O432.3
- Received：15 September 2005，
  
  Revised：26 January 2006，
  
  Published Online：30 April 2006，
  
  Published：30 April 2006
- 稿件说明：
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XU Yan-fang, LIU Wen-yao. Interpolation method for calculating gamut boundaries of digital imaging output devices[J]. Optics and precision engineering, 2006, 14(2): 261-265.
DOI：

XU Yan-fang, LIU Wen-yao. Interpolation method for calculating gamut boundaries of digital imaging output devices[J]. Optics and precision engineering, 2006, 14(2): 261-265. DOI：

摘要

提出了一种数字影像输出设备色域边界的插值计算方法

并对其精度进行了实验分析。基于CIELAB色空间中色域的连通性和三角形插值技术

该方法直接在CIELAB

L*a*b*

坐标中进行插值计算

得到有规律变化的色域边界点。对3个不同类型的输出设备进行了精度分析

采用386个采样点确定色域边界

296个检验点的色度值与实际输出色度值CIELAB色差

ΔE

的平均值/最大值分别为2.31/6.93、2.03/6.70和0.40/2.11

接近于各自设备机械稳定性引起的色差。此外

将色域表面映射为色域球

在色域球上进行插值三角形的预查找

使得插值三角形的确定时间由2.5 min缩短到10 s

降低了15倍。

Abstract

A interpolation method to define the gamut boundaries of digital imaging devices was presented

and the calculating precision was given experimentally. Based on the connectivity of sample points and the triangular interpolation technique

regularly spaced gamut boundary points were solved directly in the CIELAB

L*a*b*

coordinates. Experiments were carried out with 386 samples for three devices of different types

and the mean/maximum CIELAB

ΔE

for 296 test samples were 2.31/6.93

2.03/6.70

and 0.40/2.11

respectively

which were close to their corresponding device errors induced by their stability. Besides

by mapping gamut boundary into a gamut sphere and by using a pre-searching process

the interpolation triangle researching time was reduced from 2.5 min to 10 s

decreased 15 times.

关键词

Keywords

references

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