Study of the recording condition about the digital hologram recorded with spherical reference wave;
球面参考光波数字全息的记录条件研究
Based on some detailed theoretic analysis about the recording sampling and reconstructing separation requirement for the digital holography of the spherical reference wave, the relationship fulfilling above requirement for the lateral size of the object and CCD, the distance between the object, CCD and the reference wave point source are deduced.
结果表明 :数字全息术中采用球面参考光波可以比采用平面参考光波更容易满足采样和分离条件 ,并可以记录到更多的物体信息 ;在物体至CCD的距离固定的情况下 ,无透镜傅里叶变换全息术是优化的记录光路结构 ;散射物体比衍射物体的数字全息图更容易满足采样和分离条件。
With the decomposition for the time series data in the activated areas, the referenced waves of sequence were constructed, the respective activated types in each time period were identified using the correlation analysis.
提出了通过对激活区体元时间序列的分解,构造序列参考波形,用相关分析法检测识别每个时间周期的激活类型,得到脑功能激活区的动态变化图像、生理信号变化时间及信号强度曲线。