1 code implementation • 7 Jul 2023 • Iksung Kang, Qinrong Zhang, Stella X. Yu, Na Ji
We implemented CoCoA for widefield imaging of mouse brain tissues and validated its performance with direct-wavefront-sensing-based adaptive optics.
1 code implementation • 10 Apr 2023 • Iksung Kang, Yi Jiang, Mirko Holler, Manuel Guizar-Sicairos, A. F. J. Levi, Jeffrey Klug, Stefan Vogt, George Barbastathis
Two scanning operations are required: ptychographic to recover the complex transmissivity of the specimen; and rotation of the specimen to acquire multiple projections covering the 3D spatial frequency domain.
1 code implementation • 29 Nov 2022 • Iksung Kang, Ziling Wu, Yi Jiang, YuDong Yao, Junjing Deng, Jeffrey Klug, Stefan Vogt, George Barbastathis
Noninvasive X-ray imaging of nanoscale three-dimensional objects, e. g. integrated circuits (ICs), generally requires two types of scanning: ptychographic, which is translational and returns estimates of complex electromagnetic field through ICs; and tomographic scanning, which collects complex field projections from multiple angles.
no code implementations • 21 Jul 2020 • Iksung Kang, Alexandre Goy, George Barbastathis
Limited-angle tomography of strongly scattering quasi-transparent objects is a challenging, highly ill-posed problem with practical implications in medical and biological imaging, manufacturing, automation, and environmental and food security.
no code implementations • 14 Apr 2020 • Mo Deng, Shuai Li, Iksung Kang, Nicholas X. Fang, George Barbastathis
That is, the higher the entropy of the training images, the weaker the regularization effect can be imposed.
no code implementations • 26 Jul 2019 • Mo Deng, Shuai Li, Alexandre Goy, Iksung Kang, George Barbastathis
The quality of inverse problem solutions obtained through deep learning [Barbastathis et al, 2019] is limited by the nature of the priors learned from examples presented during the training phase.