250 citations · 419 across the 6 of their papers we have counts for
7 papers
Learning Visual Context by Comparison
Minchul Kim, Jongchan Park, Seil Na +2
Finding diseases from an X-ray image is an important yet highly challenging task. Current methods for solving this task exploit various characteristics of the chest X-ray image, bu…
Sequential Feature Filtering Classifier
Minseok Seo, Jaemin Lee, Jongchan Park +1
We propose Sequential Feature Filtering Classifier (FFC), a simple but effective classifier for convolutional neural networks (CNNs). With sequential LayerNorm and ReLU, FFC zeroes…
Time-reversing a monochromatic subwavelength optical focus by optical phase conjugation of multiply-scattered light
Jongchan Park, Chunghyun Park, KyeoReh Lee +2
Due to its time-reversal nature, optical phase conjugation generates a monochromatic light wave which retraces its propagation paths. Here, we demonstrate the regeneration of a sub…
Scattering optical elements: stand-alone optical elements exploiting multiple light scattering
Jongchan Park, Joong-Yeon Cho, Chunghyun Park +4
Optical design and fabrication techniques are crucial for making optical elements. From conventional lenses to diffractive optical elements, and to recent metasurfaces, various typ…
Recent advances in wavefront shaping techniques for biomedical applications
Hyeonseung Yu, Jongchan Park, KyoReh Lee +4
Due to the highly inhomogeneous distributions of refractive indexes, light propagation in complex media such as biological tissue experiences multiple light scattering events. The…
Focusing through turbid media by polarization modulation
Jongchan Park, Jung-Hoon Park, Hyeonseung Yu +1
We demonstrate that polarization modulation of an illumination beam can effectively control the spatial profile of the light transmitted through turbid media. Since the transmitted…