fog density

基本解释

This article analyzes such Characteristics as sensitivity, fog density and contrast of the colour positive.
分析了彩色正片的感光度、灰雾度和灰差度等特性；
The method can smooth the fog density map and preserve large jumps along edges, which may make the estimated fog density map more accurately.
该方法既能平滑尘雾浓度图，又能很好地保留场景深度发生突变的边缘，使估计出的尘雾浓度图更加精确。
As a hole-traping dopant, formate can enhance the photographic sensitivity of the emulsions as high as 3—8 times without an increase in fog density.
实验发现：作为正空穴捕获剂，适当计量的甲酸盐在不增加乳剂灰雾的前提下，可使上述乳剂的感光度提升3—8倍。