# Tracing multiple scattering trajectories for deep optical imaging in scattering media

**Authors:** Sungsam Kang, Yongwoo Kwon, Hojun Lee, Seho Kim, Jin Hee Hong, Seokchan Yoon, Wonshik Choi  
**arXiv:** [2302.09503](https://arxiv.org/abs/2302.09503)  
**Date:** 2023-02-19  
**Summary page:** https://www.summarizepaper.com/en/paper/2302.09503v1/

## Key points

- The study proposes a novel method to address the challenge of imaging objects embedded deep within complex scattering media.
- Existing approaches mainly focus on filtering out multiple scattering that obscures the ballistic waves traveling straight through the medium.
- The proposed method takes advantage of multiple scattering by finding a stack of complex phase plates that generate similar light trajectories as the original medium.
- By implementing inverse scattering using these identified phase plates, the method rectifies multiple scattering and amplifies ballistic waves by almost 600 times, leading to a significant increase in imaging depth.
- This approach marks an important milestone in solving longstanding high-order inverse scattering problems and offers promising applications in microscopic imaging of biological tissues and other opaque materials.

## Summary

The study titled "Tracing multiple scattering trajectories for deep optical imaging in scattering media" proposes a novel method to address the challenge of imaging objects embedded deep within complex scattering media. Multiple light scattering has been a major hindrance to achieving high-quality images and existing approaches mainly focus on filtering out multiple scattering that obscures the ballistic waves traveling straight through the medium. The proposed method takes advantage of multiple scattering by finding a stack of complex phase plates that generate similar light trajectories as the original medium. By implementing inverse scattering using these identified phase plates, the method rectifies multiple scattering and amplifies ballistic waves by almost 600 times, leading to a significant increase in imaging depth. This approach marks an important milestone in solving longstanding high-order inverse scattering problems and offers promising applications in microscopic imaging of biological tissues and other opaque materials. The authors Sungsam Kang, Yongwoo Kwon, Hojun Lee, Seho Kim, Jin Hee Hong, Seokchan Yoon and Wonshik Choi have demonstrated the potential for deterministic use of multiple scattering for deep optical imaging in complex media with this innovative technique.