PARAMETRIC METHODS FOR GAMMA AND INVERSE GAMMA-CORRECTION, WITH EXTENSIONS TO HALF-TONING

被引:6
作者
STANISLAW, H [1 ]
OLZAK, LA [1 ]
机构
[1] UNIV CALIF LOS ANGELES,LOS ANGELES,CA 90024
来源
BEHAVIOR RESEARCH METHODS INSTRUMENTS & COMPUTERS | 1990年 / 22卷 / 04期
关键词
D O I
10.3758/BF03203182
中图分类号
B841 [心理学研究方法];
学科分类号
040201 ;
摘要
Users of computer-controlled color video systems rely on procedures called gamma and inverse gamma correction to translate between system-specific descriptions of their stimuli and perceptually meaningful measures that are independent of the video system. These corrections are usually performed using a tabular approach. In the present paper, we detail problems with the tabular approach, suggest a parametric alternative, and describe programs for estimating parameter values. The parametric approach is then illustrated by using gamma and inverse gamma correction to find the best pair of colors for a halftone stimulus (i.e., one combining two different colors). © 1990 Psychonomic Society, Inc.
引用
收藏
页码:402 / 408
页数:7
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