数字背景下“负-正”系统改善画面暗部影像质量的方法  

Methods of Improving Image Quality of Dark Zone in Negative-positive System in the Digital Era

作　　者：向卫东[1] 

机构地区：[1]重庆师范大学影视传媒学院,重庆400047

出　　处：《影像技术》2008年第6期28-30,共3页Image Technology

摘　　要：本文从摄影过程理论出发,以感光材料的感光特性曲线为工具对"负—正"系统中采取前期增加曝光量并和后期洗印工艺相结合来改善画面暗部影像质量的方法进行了分析和研究,并进行了相应的实拍验证。Based on the theory of the photographic process and H-D curve, this paper analyses and studies the methods of improving the image quality of the dark zone in negative-positive system by increasing the exposure value combined with the enhancement of the development and printing processes; results were proved by running practical shooting work.

关 键 词：“负-正”系统 暗部影像质量 感光特性曲线 

分 类 号：TB88[一般工业技术—摄影技术] TQ577.73[化学工程—精细化工]