摘要
基于频域方法实现了数字记录和再现三维物体离轴全息图.通过频谱对应关系求得各个面的频谱分布,使用数字滤波方法,成功地消除了零级衍射和共轭像;通过改变再现距离,分别获取了三维物体各个截面的再现像.
A method for numerically recording and reconstructing off-line hologram of a 3-dimension object is described. Based on the relationship of spectra, the spectrum band in each plane can be calculated. By using digital filter method, conjugate images and zero-order diffraction images are eliminated. And the layers of the 3-dimension object are reconstructed through using different distances between reconstructed image and CGH .
出处
《物理实验》
2006年第4期6-8,共3页
Physics Experimentation
基金
国家自然科学基金资助项目(No.19802002)
关键词
数字重现
三维物体
傅里叶变换
(逐)层(分)析
滤波
numerical reconstruction
3-dimension object
Fourier transform
layer-by-layer analysis
filtering
