Numerical Simulation of In-line Digital Holograms
In the field of digital holography, the simulation of holograms that has no noise and other influence factors will be an excellent solution to verify image reconstruction and measurement methods. In this study, we discussed two methods of numerical simulation of digital holograms. These methods are based on the equations of digital holography reconstruction using Fresnel approximation or convolution transform. Particle holograms and some complex holograms were numerically simulated using these methods. The relationship between the quality of holograms and some important parameters (image size, object distance) was obtained. The results show that the Fresnel method has acceptable quality of reconstruction image and fast computing speed, but the resolution and the size of hologram changes with the object distance. On the other hand, the convolution method has better quality of reconstruction image and slow computing speed, but the resolution and the size of hologram doesnt change with the object distance. Using a small size of image and a high-powered computer, the computing speed can be tolerable. Based on these results, we can conclude that the convolution method is better way to simulate in-line digital holograms.
Digital Holography Reconstruction Particle Hologram
Yan Yang Bo-seon Kang
Department of Mechanic, Chongqing Institute of Technology,Chongqing 400050, China;Department of Mech Department of Mechanical Engineering, Chonnam National University,Gwangju 500-757, Korea
国际会议
上海
英文
2055-2059
2007-03-12（万方平台首次上网日期，不代表论文的发表时间）