THE RELATIONSHIP BETWEEN OBJECTIVE AND SUBJECTIVE IMAGE QUALITY CRITERIA

被引：0
|
作者：
TOPFER, K [1 ]
JACOBSON, RE [1 ]
机构：
[1] UNIV WESTMINSTER, IMAGING TECHNOL RES GRP, LONDON W1P 7PT, ENGLAND
来源：
JOURNAL OF INFORMATION RECORDING MATERIALS | 1993年 / 21卷 / 01期
关键词：
PHOTOGRAPHIC MATERIALS; OBJECTIVE AND SUBJECTIVE IMAGE QUALITY CRITERIA; AMT-ACUTANCE; GRAININESS; SIGNAL-TO-NOISE RATIO (SNR); IMAGING CHAIN;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Sharpness characterized by AMT-acutance and graininess as subjective image quality criteria are compared with other subjective image quality criteria derived from the signal-to-noise ratio (SNR) of photographic films and hardcopies on photographic paper. The SNR of enlarged hardcopies from negative films is calculated by means of linear information theory using experimental data for the characteristic curves, modulation transfer functions and noise power spectra of all elements of the imaging chain, Conclusions about the optimum film exposure and the densities most critical for the subjective evaluation of image quality are drawn from this analysis. Finally, the power-functional relationships between objective and subjective image quality criteria based on SNR, and film sensitivity are quantified.
引用
收藏
页码：5 / 27
页数：23
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