摘要
本文讨论了全息图象象质的评价方法. (1)象的逼真度:象和物强度分布之间的相似性如何度量.提出方法是以最佳全息图象和实际所得的象强度函数σ(x,y),I(x,y)之间的均方差值. (2)象的相对结构容量:其物理意义是全息象的平方的积分. (3)相关品质:此方法是以光强函数I(x,y)和σ(x,y)之间的相关性为基础的. (4)面积元法:它的形式是实际象和全息象之间的差值.
The evaluating methods consists of four parts:
Image fidelity; How is the similarity between the intensity distributions in the best holographic image and in the object to be measured.
Relative structural content of an image. It's phsical meaning is the integral of the square of holographic image.
Correlation quality. The evalution of image quality is based on the correlation between the intensity function I(x,y)and σ(x,y).
The method of area element. It's form is the differece between atual image and holographic image.
出处
《山东科学》
CAS
1991年第1期14-19,共6页
Shandong Science
关键词
X线
全息立体图象
象质评价
intensity distributions function
fidelity defect
resolution limit
mean structural density
