【摘要】 通过对光学层析技术中光线偏折角方程进行傅里叶变换 ,推导出了一种可以适用于位相物体三维折射率场的数学再现公式———卷积背投影公式 针对实际运算 ,采用了线性内插函数进行误差修正 ,并给出了具体的计算步骤 采用该公式 ,模拟重建的平均误差为 0 2 % ,最大误差为 5%更多还原

【Abstract】 By using Fourier transform to transform the equation of light ray deflective angle ,we deduce a mathematical reconstruction algorithm——Convolution Back-projection Algorithm, which can be applied to the reconstruction of 3-D refraction index field.According to specific operation,we use linear inserted function to correct it and give out the detailed calculational methods.Applying the formulation,the average error of simulative reconstruction is 0.2%,the maximum is less than 5%.更多还原