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? 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.

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。