基于波前编码的大景深成像技术
首发时间:2011-01-06
摘要:通过在光学成像系统光路中加入波前编码模板,后续使用图像处理技术对波前编码后的图像进行复原得到清晰图像,使光学系统在保持孔径的同时扩大了景深,在离焦范围内得到较好的图像质量。在介绍了目前常用的增大景深成像技术的基础上,利用光学系统的特征函数不变性,使用稳相法推导得出波前模板参数,分析并验证了波前模板在增大景深方面的作用。
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Large depth of field imaging system based on wave front coding
Abstract:In this paper,the depth of field of optical imaging system can be extend if a wave front coding plate was put into the imaging system and using imaging processing technology to recover the middle blurred image. This method can keep the aperture size and better image quality was obtained. Firstly, several methods used for extend the depth of field were presented. Then the wave front parameters were obtained using the invariant property of optical character function and stabilized imaging method. The simulation result shows the wave front plate can be used for extend the depth of field.
Keywords: optical imaging system depth of field wave front coding
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