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使用PSF校正和预先消光的无镜头扩展场深成像

Zhengdai Li, Ying Li, Youming Guo

|August 13, 2025

概括

无镜头相机通过一种新的PSF校正和消光策略实现了扩展的视场深度 (EDoF). 这种方法提高了图像质量和计算成像的准确性,而不会牺牲衍射效率.

科学领域:

计算成像技术的成像
光学工程是指光学工程.
图像处理图像处理

背景情况:

无镜头相机提供紧的设计,可以扩展深度 (EDoF).
现有的EDoF无镜头摄像头损害了深度不变点扩散函数 (PSF) 的衍射效率.
这种妥协导致PSF具有长尾,狭窄的调制传输函数和解卷过程中的噪声放大.

研究的目的:

开发一种用于改善无镜头EDoF相机图像质量的新方法.
为了克服目前无镜头成像系统中低衍射效率和噪声放大方面的局限性.
为了在单次曝光中在很大的深度范围内实现高质量的成像.

主要方法:

一种两次测量PSF校正方法,以提高测量PSF的准确性.
一个预先拒绝的策略,包括一个拒绝网络 (DN).
一个联合培训框架,使重建算法能够指导DN的融合.

主要成果:

实现了精确的PSF测量和有效的降噪.
在广泛的深度范围内展示了高质量的成像性能.
提出的方法显著提高了成像质量,而不会牺牲衍射效率.

结论:

开发的PSF校正和预降噪策略有效地解决了无镜头EDoF摄像机的图像质量下降问题.
这种方法克服了PSF一致性和衍射效率之间的权衡.
该方法为高质量的单曝光EDoF成像提供了计算高效和节省时间的解决方案.

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