A method of solving tilt illumination for multiple distance phase retrieval

作者：Guo, Cheng; Li, Qiang; Tan, Jiubin; Liu, Shutian; Liu, Zhengjun^*

来源：Optics and Lasers in Engineering, 2018, 106: 17-23.

DOI：10.1016/j.optlaseng.2018.02.003

• Image reconstruction techniques
• Phase retrieval
• Computational imaging

Multiple distance phase retrieval is a technique of using a series of intensity patterns to reconstruct a complex valued image of object. However, tilt illumination originating from the off-axis displacement of incident light significantly impairs its imaging quality. To eliminate this affection, we use cross-correlation calibration to estimate oblique angle of incident light and a Fourier-based strategy to correct tilted illumination effect. Compared to other methods, binary and biological object are both stably reconstructed in simulation and experiment. This work provides a simple but beneficial method to solve the problem of tilt illumination for lens-free multi-distance system.

• 出版日期2018-7
• 单位哈尔滨工业大学