Search Results for author: Cagatay Isil

Found 8 papers, 0 papers with code

Deep Plug-and-Play HIO Approach for Phase Retrieval

no code implementations28 Nov 2024 Cagatay Isil, Figen S. Oktem

In the phase retrieval problem, the aim is the recovery of an unknown image from intensity-only measurements such as Fourier intensity.

Computational Efficiency Retrieval

Unidirectional imaging with partially coherent light

no code implementations10 Aug 2024 Guangdong Ma, Che-Yung Shen, Jingxi Li, Luzhe Huang, Cagatay Isil, Fazil Onuralp Ardic, Xilin Yang, Yuhang Li, Yuntian Wang, Md Sadman Sakib Rahman, Aydogan Ozcan

Here, we report unidirectional imaging under spatially partially coherent light and demonstrate high-quality imaging only in the forward direction (A->B) with high power efficiency while distorting the image formation in the backward direction (B->A) along with low power efficiency.

Blocking

Virtual Gram staining of label-free bacteria using darkfield microscopy and deep learning

no code implementations17 Jul 2024 Cagatay Isil, Hatice Ceylan Koydemir, Merve Eryilmaz, Kevin De Haan, Nir Pillar, Koray Mentesoglu, Aras Firat Unal, Yair Rivenson, Sukantha Chandrasekaran, Omai B. Garner, Aydogan Ozcan

Gram staining has been one of the most frequently used staining protocols in microbiology for over a century, utilized across various fields, including diagnostics, food safety, and environmental monitoring.

Subwavelength Imaging using a Solid-Immersion Diffractive Optical Processor

no code implementations17 Jan 2024 Jingtian Hu, Kun Liao, Niyazi Ulas Dinc, Carlo Gigli, Bijie Bai, Tianyi Gan, Xurong Li, Hanlong Chen, Xilin Yang, Yuhang Li, Cagatay Isil, Md Sadman Sakib Rahman, Jingxi Li, Xiaoyong Hu, Mona Jarrahi, Demetri Psaltis, Aydogan Ozcan

To resolve subwavelength features of an object, the diffractive imager uses a thin, high-index solid-immersion layer to transmit high-frequency information of the object to a spatially-optimized diffractive encoder, which converts/encodes high-frequency information of the input into low-frequency spatial modes for transmission through air.

Decoder

All-optical image denoising using a diffractive visual processor

no code implementations17 Sep 2023 Cagatay Isil, Tianyi Gan, F. Onuralp Ardic, Koray Mentesoglu, Jagrit Digani, Huseyin Karaca, Hanlong Chen, Jingxi Li, Deniz Mengu, Mona Jarrahi, Kaan Akşit, Aydogan Ozcan

Our results show that these diffractive denoisers can efficiently remove salt and pepper noise and image rendering-related spatial artifacts from input phase or intensity images while achieving an output power efficiency of ~30-40%.

All Image Denoising

Learning Diffractive Optical Communication Around Arbitrary Opaque Occlusions

no code implementations20 Apr 2023 Md Sadman Sakib Rahman, Tianyi Gan, Emir Arda Deger, Cagatay Isil, Mona Jarrahi, Aydogan Ozcan

In this scheme, an electronic neural network encoder and a diffractive optical network decoder are jointly trained using deep learning to transfer the optical information or message of interest around the opaque occlusion of an arbitrary shape.

Decoder

Super-resolution image display using diffractive decoders

no code implementations15 Jun 2022 Cagatay Isil, Deniz Mengu, Yifan Zhao, Anika Tabassum, Jingxi Li, Yi Luo, Mona Jarrahi, Aydogan Ozcan

We report a deep learning-enabled diffractive display design that is based on a jointly-trained pair of an electronic encoder and a diffractive optical decoder to synthesize/project super-resolved images using low-resolution wavefront modulators.

Decoder Super-Resolution

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