CAJ | 학술논문

波前编码光学系统其成像过程由光学成像和图像复原两部分组成，光学成像过程探测器上所成的编码图像含有噪声，该噪声在图像复原过程将被放大，为了分析探测器噪声对波前编码系统在图像复原过程中产生的影响，通过添加高斯随机噪声来模拟探测器噪声，使用直接逆滤波、维纳滤波和Lucy—Richardson滤波算法，对波前编码成像系统焦点位置和离焦位置的中间模糊图像进行图像复原，并对复原图像评价分析。实验结果表明探测器噪声对波前编码系统的图像复原有较大的影响，验证了波前编码系统对离焦不敏感，并给出含噪声情况下复原滤波器性能的变化。
파전편마광학계통기성상과정유광학성상화도상복원량부분조성，광학성상과정탐측기상소성적편마도상함유조성，해조성재도상복원과정장피방대，위료분석탐측기조성대파전편마계통재도상복원과정중산생적영향，통과첨가고사수궤조성래모의탐측기조성，사용직접역려파、유납려파화Lucy—Richardson려파산법，대파전편마성상계통초점위치화리초위치적중간모호도상진행도상복원，병대복원도상평개분석。실험결과표명탐측기조성대파전편마계통적도상복원유교대적영향，험증료파전편마계통대리초불민감，병급출함조성정황하복원려파기성능적변화。
The imaging process of wavefront coding optical system involves optical imaging and image restoration. The enco- ding image formed on the detector in optical imaging process includes a noise, which will be amplified in the image restora- tion process. In order to analyze the effect of detector noise on the performance of wavefront coding system in the image res- toration process, this paper simulates the detector noise by adding Gaussian random noise, uses direct inverse filtering, Wie- ner filtering and Lucy-Richardson filter algorithms to restore the middle blurred image of the wavefront coding system at the focus position and the defocus position, then evaluates the restored image. Experiment results show that the detector noise has a greater impact on the wavefront coding system in image restoration process, confirm that the wavefront coding system is insensitive to defocus. The changes of performance of recovery filter with noise are obtained.