Suah Kim lived in Korea, Japan, United States, Japan, and China. He finished undergraduate studies in Combinatorics and Optimization (Honours in Bachelor of Mathematics) from University of Waterloo in Canada. He then continued graduate studies in Information Security at Korea University in South Korea.
From 2019 to 2021, he worked as a postdoctral researcher at Korea University researching topics around signal processing and security. Currently he is working as a senior researcher at Tokamak Network, researching about Decentralized Finance and Blockchain Security and Theory.
■ Automatic image enhancement with compressive properties
■ GAN generated deepfake image detection
■ SNS enhanced image database collection
■ File size reducing format preserving image encryption.
■ Highly incentivized decentralized CDN cluster.
■ Generated an artificial image data based using two CAPTCHA samples provided by the bank. Then, used deep learning CNN to automatically break CAPTCHA. Assisted the service provider to improve their CAPTCHA system.
■ Collected small samples of randomly generated wireless passwords by a company and used GPUs to statistically find a pattern in the generated passwords. The pattern is then used to break all the other wireless networks provided by
the company; the company updated their generator to be secure.
■ Developed a novel method to hide data in images in a way that it is reversible. The method generated watermarked images with less distortion than existing work. Also, pioneered a new field where reversible data hiding can be used to automatically enhance the image in a reversible way.
| Date | Title | Publisher | Authors | Codes |
|---|---|---|---|---|
| 2019 |
[SCI] Reversible data hiding with automatic brightness preserving contrast enhancement [accepted version /
published version] |
IEEE Transactions on Circuits and Systems for Video Technology |
Suah Kim, Rolf Lussi, Xiaochao Qu, Fangjun Huang, Hyoung Joong Kim |
github, direct |
| 2019 | [SCI] Skewed histogram shifting for reversible data hiding using a pair of extreme predictions [accepted version /
published version] |
IEEE Transactions on Circuits and Systems for Video Technology |
Suah Kim, Xiaochao Qu, Vasily Sachnev, Hyoung Joong Kim |
github, direct |
| 2019 | [SCIE] Reversible Data Hiding in JPEG Images Using Quantized DC |
Entropy |
Suah Kim, Fangjun Huang, Hyoung Joong Kim |
github, direct |
| 2017 | [SCIE] Improved reversible data hiding in JPEG images based on new coefficient selection strategy |
Eurasip Journal on Image and Video Processing |
Fisseha Teju Wedaj, Suah Kim, Hyoung Joong Kim, Fangjun Huang |
|
| 2015 | [SCIE] Linear collaborative discriminant regression classification for face recognition |
Journal of Visual Communication and Image Representation |
Xiaochao Qu, Suah Kim, Run Cui, Hyoung Joong Kim |
|
| 2015 | Breaking character and natural image based CAPTCHA using feature classification |
Journal of the Korea Institute of Information Security and Cryptology |
Jaehwan Kim, Suah Kim, Hyoung Joong Kim |
|
| 2015 | [SCIE] Reversible watermarking based on compensation |
Journal of Electrical Engineering and Technology |
Xiaochao Qu, Suah Kim, Hyoung Joong Kim |
| Date | Title | Conference | Authors | Codes |
|---|---|---|---|---|
| 2019 |
JPEG Encryption with File Format Preservation and File Size Reduction [accepted version /
published version] |
IEEE GCCE |
Suah Kim, Hyoung Joong Kim |
|
| 2019 | Automatic Contrast Enhancement Using Reversible Data Hiding with Distortion Minimization [accepted version /
published version] |
IEEE ICIVC |
Suah Kim, Hyoung Joong Kim |
|
| 2019 | [ Best paper award] Intrusion detection and mitigation system using blockchain analysis for bitcoin exchange [accepted version /
published version] |
ACM CCIOT |
Suah Kim, Beomjoong Kim, Hyoung Joong Kim |
|
| 2017 | Weighted sparse representation using a learned distance metric for face recognition |
IEEE ICIP |
Xiaochao Qu, Suah Kim, Dessalegn Atnafu, Hyoung Joong Kim |
|
| 2015 | Automatic contrast enhancement using reversible data hiding [accepted version / published version] |
IEEE WIFS |
Suah Kim, Rolf Lussi, Xiaochao Qu, Hyoung Joong Kim |
github, direct |
| 2015 | Metadata protection scheme for JPEG privacy & security using hierarchical and group-based models |
IEEE ICTA |
Jonathan Leopsoy, Suah Kim, Dessalegn Atnafu, Hyoung Joong Kim |