GB/T 19894-2005 in English

《GB/T 19894-2005数码照相机 光电转换函数（OECFs）的测量方法》由TC107（全国照相机械标准化技术委员会）归口，主管部门为中国机械工业联合会。
本标准详细说明了输出数字编码图像文件的电子静态图片相机的光电转换函数(OECFs)的测量方法。OECF被定义为焦平面对数曝光或景气的对数亮度和一个光数字影响像拍摄系统的数字输出信息号值之间的关系。本标准适用于黑白和彩色数码照相机。

Scope

This standard specifies the method for measuring the optical-to-electrical transfer functions (OECFs) of electronic still picture cameras that output digitally encoded image files. OECF is defined as the relationship between the focal plane logarithmic exposure or logarithmic brightness of the scene and the digital output signal value of an optoelectronic digital image capture system. This standard applies to black and white and color digital cameras.