菲涅耳全息图的计算机生成及数字重现

Computer generation and digital reconstruction of fresnel hologram

本文研究菲涅耳(Fresnel)衍射积分的两种计算机模拟算法,分别用卷积算法和傅里叶变换算法实现菲涅耳积分,阐述了两种算法的优点和缺点。尝试将计算全息与数字全息相结合,模拟光线的菲涅耳衍射传播,用计算机生成菲涅耳全息图,并由所生成的全息图再现出原始图像,完成全息图的数字重现,真正实现整个全息记录和重现过程的计算机模拟。

This paper researches on two kinds of computer simulated algorithm of fresnel diffraction, realizes fresnel integral by using convolution algorithm and fourier transform algorithm, describes the advantages and disadvantages of these two algorithms. It also tries to combine computer holography with digital holography, simulate light's fresnel diffraction propagation, generates fresnel hologram with computer, by which to reconstruct its original image and realize the digital reconstruction of hologram, realizes the computer simulation of whole holographic record and reconstruction process.