染料云的形态结构表征—染料的径向分布与投影密度分布

彩色影像的最小像元-染料云的形态结构的表征有两种方法:一种是染料云的染料浓度的径向分布;另一种是染料云的投影密度分布。前者一般是从染料云形成过程的模拟计算得到;后者是从微密度计对染料云的扫描测得。本文提出了将染料的径向分布转换成相对投影密度的一种近似计算方法,从而使两种形式的表征方法相互联系起来,这为进一步优化染料云形态的研究打下基础。

CHARACTERIZATION OF DYE CLOUD MORPHOLOGY DYE RADIAL DISTRIBUTION AND PROJECTED DENSITY DISTRIBUTION

There are two ways to characterize the morphology of dye cloud: one is the radial distribution of dye around a silver halide grain, which could be generally obtained from a numerical simulation or calculation for dye cloud formation; another is the distribution of projected densities of a dye cloud, which could be experimentally obtained from measurements via scanning of a microdensitometer. An approximate mathematic transformation, suitable for silver halide color imaging system with dispersion couplers, from the radial distribution of dye into the distribution of the relative projected densities has been proposed and derived.