Guidestar-free image-guided wavefront-shaping
Tomer Yeminy, Ori Katz

TL;DR
This paper introduces a novel, guidestar-free wavefront-shaping method enabling non-invasive, widefield imaging through scattering media without the need for illumination control or raster scanning, even for large objects beyond the memory-effect range.
Contribution
It presents a new computational approach for wavefront correction that works blindly and non-invasively, expanding imaging capabilities through highly scattering layers.
Findings
Successful imaging of extended objects through scattering layers.
Wavefront correction achieved without guide-stars or illumination control.
Applicable to microscopy and endoscopy scenarios.
Abstract
Optical imaging through scattering media is a fundamental challenge in many applications. Recently, substantial breakthroughs such as imaging through biological tissues and looking around corners have been obtained by the use of wavefront-shaping approaches. However, these require an implanted guide-star for determining the wavefront correction, controlled coherent illumination, and most often raster scanning of the shaped focus. Alternative novel computational approaches that exploit speckle correlations, avoid guide-stars and wavefront control but are limited to small two-dimensional objects contained within the memory-effect correlations range. Here, we present a new concept, image-guided wavefront-shaping, allowing non-invasive, guidestar-free, widefield, incoherent imaging through highly scattering layers, without illumination control. Most importantly, the wavefront-correction is…
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