摘要
为了保证再现像清晰的细节再现,同时降低全息记录对CCD的要求,本文提出一种基于图像相减的消除离轴全息零级衍射斑的方法,同时用计算机模拟实验.结果表明,该方法简单快捷,即使在零级像和共轭像严重重叠的情况下,也能较好地消除零级像的影响.因此可用于全息的实时检测,且不会造成信息丢失.
To enhance the quality of reconstructed images and reduce the requirement of CCD at the same time, we propose a digital processing method for eliminating the influences of the zero - order diffraction spot on the reconstructed image of off - axis digital hologram using image subtraction. Reconstructions of hologram without zero - order diffraction spot are implemented successfully. It is proved to be fast and simple, and can eliminate the zero - order diffraction effectively, even if zero - order image and conjugate image is overlapping. It can be used in the real time inspection.
出处
《南华大学学报（自然科学版）》
2007年第2期98-101,共4页
Journal of University of South China：Science and Technology
关键词
数字全息
零级像
图像处理
digital holography
zero - order image
image processing
