Spectrum Analysis and Measurment Research on Visual Density of the National Standard Densitometer
LIU Zi-long1,2, CHEN Rui2, LIAO Ning-fang1, LI Zai-qing2, WANG Yu2
1. National Professional Laboratory of Color Science and Engineering, Beijing Institute of Technology, Beijing 100081, China 2. Optical Division, National Institute of Metrology, Beijing 100013, China
Abstract：Visual density is an important index for the estimation of photographic film and visual photo. The development of biomedical image and macromolecule image needs high measurement uncertainty of visual density in spectrum characteristic. The ISO standard of visual density measurement conditions was modified in 2001. A series of equipments designed for densitometer enhance the spectral matching between the national standard densitometer and the ISO standard function. And a new measurement formula is given based on theory analysis. According to the measurement data and uncertainty analysis, the combined uncertainties are 0.001 1 (0<D<4.0) and 0.003 1 (4.0≤D<6.0).
Key words：Visual density metrology;Spectral function matching;The visual spectrum;Uncertainties analysis
刘子龙1，2，陈 锐2，廖宁放1，李在清2，王 煜2 . 光学密度可见光区光谱特性的理论分析与实验研究[J]. 光谱学与光谱分析, 2012, 32(12): 3315-3318.
LIU Zi-long1,2, CHEN Rui2, LIAO Ning-fang1, LI Zai-qing2, WANG Yu2 . Spectrum Analysis and Measurment Research on Visual Density of the National Standard Densitometer . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2012, 32(12): 3315-3318.
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