Thin film notch filters as platforms for biological image processing

Abstract

Many image processing operations involve the modification of the spatial frequency content of images. Here we demonstrate object-plane spatial frequency filtering utilizing the angular sensitivity of a commercial spectral bandstop filter. This approach to all-optical image processing is shown to generate real-time pseudo-3D images of transparent biological and other samples, such as human cervical cancer cells. This work demonstrates the potential of non-local, non-interferometric approaches to image processing for uses in label-free biological cell imaging and dynamical monitoring.

manuscript 14 pages, 5 figures, supplementary material 7 pages, 4 supplementary figures

References in corpus (3)

• Real time phase imaging with an asymmetric transfer function metasurface
• Compressed ghost edge imaging
• On-chip Brillouin notch filter on a silicon nitride ring resonator