本文描述一种利用黑白正、负片密合检测两幅图象之间微小差异的方法。由于采用假彩色增强技术,从而克服黑白正、负片密合处理时存在强直流分量致使差异信息不明显的缺点,实现了拷贝片的反差系统γ=+1,所得H-D曲线的线性区域动态范围较大。 This article describes a method of using black and white positive and negative film to detect small differences between two images. Due to the use of false color enhancement technology to overcome the black-and-white positive and negative films when there is a strong DC component of the differential information is not obvious shortcomings, to achieve a copy of the contrast system γ = + 1, the linear region of the resulting HD dynamic range than Big.