EDUCATION

2017.03. – 2022.08.    Ph.D. of Engineering (Remote Sensing),    Dept. of Geoinformatics, University of Seoul, Seoul, Korea.

2015.03. – 2017.02.    Master Degree of Engineering (Remote Sensing),      Dept. of Geoinformatics, University of Seoul, Seoul, Korea.

2011.03. – 2015.02.    Bachelor Degree of Engineering (Geoinformatics),     Dept. of Geoinformatics, University of Seoul, Seoul, Korea.

THESIS

Phase Unwrapping Using Modified U-Net Regression Model: Focusing on Network Structure and Training Data Optimization, Doctorial Thesis, Dept. of Geoinformatics, Univ. of Seoul, Aug., 2022, Seoul, Korea

Precise Three-dimensional Mapping of the 2016 Kumamoto Earthquake through the Integration of SAR Interferometry and Offset Tracking, Master’s Thesis, Dept. of Geoinformatics, Univ. of Seoul, Feb., 2017, Seoul, Korea

RESEARCH EXPERIENCES

1.  Target detection, classification, segmentation, and prediction from Satellite and GIS data

-  Forest type and vertical structure classification from multi-modal data (SAR , satellite- and UAV-based Optical data) using deep learning

-  Deep learning-based probabilistic oil spill mapping using dual-polarized SAR data

-  Marine target classification from dual-polarized SAR data (Sea surface, Oil spill, Ship, Land) using deep learning

-  Landslide susceptibility mapping

- Wetland topographical mapping and change analysis from Sentinel-1 data

- Flood mapping using SAR intensity imagery

2.  Applying Multi-Temporal InSAR to measure gradual surface deformation.

-  Time-series deformation of World Cup park, Seoul, Korea (Solid waste landfill)

-  Time-series deformation of Mt. Baekdu, Korea (volcano)

-  Seaward ground deformation of Noksan Industrial Complex, Korea (Coastal landfill)

3.  Two- or Three- dimensional surface displacements mapping using spaceborne SAR

-   2016 Kumamoto Earthquake (3D)

-   Uvêrsbreen glacier (2D)

-   The 6th North Korea nuclear test (3D)

-   2017 Pohang Earthquake (3D)

-   2011 Haiti Earthquake (3D)

-   2018 Indonesia Earthquake (3D)

4.  Development of InSAR data processing strategy

-   Phase unwrapping of large surface deformation in ALOS PALSAR-2 using offset tracking

-   Phase unwrapping Using Modified U-Net Regression Model

-   Directional-filter-based  Ionospheric error correction

-   Multiple-aperture SAR Interferometry based Ionospheric error correction

5.  Underground source modeling using SAR-based surface deformation measurements

-   2017 Pohang Earthquake  (Okada model)

-   The 6th North Korea nuclear test (Mogi and Yang model)

-  Mt. Baekdu, Korea (Mogi model)

PUBLICATIONS

SCI, SCIE

1. Baek, W.-K., Jung, H.-S., Kim, S.-W., Mapping Three-dimensional Deformation related to the 2018 Sulawesi Earthquake Using Mutl-Kernel Offset Tracking (in preparation)

2. Baek, W.-K., Jung, H.-S., J.-S. Won, Mapping Seaward Deformation on Noksan Coastal Landfill Area in Korea Using Three-dimensional Radar Interferometry, Remote Sensing of Environment (reject and in preparation)

3. Baek, W.-K., Jang, Y., Lee, D.-U., Ryu, J.-H., Automated generation of ship detection dataset from a spaceborne optical sensor using AIS-derived positional error: an application with GOCI-II (under review)

4. Lee, J., Kim, K., Kwak, G.-H., Baek, W.-K., Jang, Y. J., Ryu, J.-H., 2025. Optimization of a multi-sensor satellite-based waterline method for rapid and extensive tidal flat topography mapping, Estuarine, Coastal and Shelf Science, 318(15), 109235. https://doi.org/10.1016/j.ecss.2025.109235 [20250115]

5. Hakim, W. L., Fadhillah, F., Lee, S., Park, S., Baek, W.-K., Kim, H.-C., Lee, C.-W., 2024. Time-series InSAR measurement using ICOPS and estimation of along-track surface deformation using MAI during the 2021 eruption of Fagradalsfjall Volcano, Iceland, Scientific Reports, 14, 30709.  https://doi.org/10.1038/s41598-024-79128-1. [20241228]

6. Baek, W.-K., Jung, H.-S., 2024. Phase unwrapping of SAR interferogram from modified U-net via training data simulation and network structure optimization, Remote Sensing of Environment, 314, 114392. https://doi.org/10.1016/j.rse.2024.114392. [20240830]

7. Baek, W.-K., Lee, M.-J., Jung, H.-S., 2024. Land Cover Classification from RGB and NIR Satellite Images Using Modified U-Net Model, IEEE Access, 12, 69445-69455.  https://doi.org/10.1109/ACCESS.2024.3401416. [20240515]

8. Jang, Y., Kim, K., Baek, W.-K., Ahn, J.-H., Ryu, J.-H., 2024. Feasibility of Ship Detection and Tracking Using GOCI-II Images, Ocean Science Journal, 59, 16. https://doi.org/10.1007/s12601-024-00141-6. [20240325]

9. Baek, W.-K., Kim, E., Jeon, H.-K., Lee, K.-J., Kim, S.-W., Lee, Y.-K., Ryu, J.-H., 2024. Monitoring Maritime Ship Characteristics Using Satellite Remote Sensing Data from Different Sensors, Ocean Science Journal, 59, 8. https://doi.org/10.1007/s12601-023-00131-0.  [20240130]

10. Yoo, S. L., Lee, K., Baek, W.-K., and Kim, K. I., 2023, Path Prediction for Fishing Boats Using Attention-Based Bidirectional Gated Recurrent Unit, Ocean Science Journal, 59, 3. https://doi.org/10.1007/s12601-023-00126-x. [20231228]

11. Lee, E.-R., Baek, W.-K., Jung, H.-S., 2023, Mapping Tree Species Using CNN from Bi-Seasonal High-Resolution Drone Optic and LiDAR Data, Remote Sensing, 15(8), 2140.  https://doi.org/10.3390/rs15082140. [20230418]

12. Yu, J.-W., Yoon, Y.-W., Baek, W.-K., Jung, H.-S., 2021, Forest Vertical Structure Mapping Using Two-Seasonal Optic Images and LiDAR DSM Acquired from UAV Platform through Random Forest, XGBoost, and Support Vector Machine Approaches, Remote Sensing, 13(21), 4282. https://doi.org/10.3390/rs13214282 (Corresponding Author). [20211025]

13. Baek, W.-K., Jung, H.-S., 2021, Performance Comparison of Oil Spill and Ship Classification from X-Band Dual- and Single-Polarized SAR Image Using Support Vector Machine, Random Forest, and Deep Neural Network, Remote Sensing, 13(16), 3203. https://doi.org/10.3390/rs13163203. [20210812]

14. Park, W., Baek, W.-K.; Won, J.-S., and Jung, H.-S., 2020. Comparison of input image size for ship detection from KOMPSAT-5 SAR image using deep neural networks, Journal of Coastal Research, SI102, 208-217.   [20201214]

15. Baek, W.-K., Jung, H.-S., Kim, D., 2020, Oil Spill Detection of Kerch Strait in November 2007 from Dual-Polarized TerraSAR-X Image Using Artificial and Convolutional Neural Network Regression Models, Journal of Coastal Research, SI102, 137-144. [20201214]

16.  Lee, S., Baek, W.-K., Jung, H.-S., Lee, S., 2020,  Susceptibility Mapping on Urban Landslides Using Deep Learning Approaches in Mt. Umyeon, applied sciences, 10(22), 8189. [20201117]

17.  Hong, S.-J., Baek, W.-K., Jung, H.-S., 2020,  Ship Detection from X-band SAR Images using M2Det Deep Learning Model, applied sciences, 10(21), 7741.  [20200830]

18. Baek, W.-K.,  Jung, H.-S., Kim, T. S., 2020, Satellite Radar Observation of Large Surface Collapses Induced by the 2017 North Korea Nuclear Test, Scientific Reports, 10, 17833.  https://doi.org/10.1038/s41598-020-74957-2. [20201020]

19.  Baek, W.-K., Jung, H.-S., 2020, Precise Three-Dimensional Deformation Retrieval in Large and Complex Deformation Areas via Integration of Offsets-Based Unwrapping and Improved Multiple-Aperture SAR Interferometry: Application to the 2016 Kumamoto Earthquake, Engineering, 6(8), 927-935.  https://doi.org/10.1016/j.eng.2020.06.012. [20200703]

20.  Lee, Y.-S., Lee, S. Baek, W.-K., Jung, H.-S., 2020, Mapping Forest Vertical Structure in JeJu Island from Optical and Radar Satellite Images Using Artificial Neural Network, Remote Sensing, 12(5), 797. [20200302]

21.  Chae, S. -H., Lee, W. -J., Baek, W.-K., Jung, H.-S., 2019, An Improvement of the Performance of SAR Offset Tracking Approach to Measure Optimal Surface Displacements, IEEE Access, 7(1), 131627-131637, doi : 10.1109/ACCESS.2019.2938831. [20190909]

22.  Baek, W.-K., Chae, S. -H., Jung, H.-S., 2018, Feasibility of ALOS2 PALSAR2 Offset-based Phase Unwrapping of SAR Interferogram in Large and Complex Surface Deformations, IEEE Access, 6(1), 45951-45960, doi : 10.1109/ACCESS.2018.2865799 (Outstanding Paper Awarded by Univ. of Seoul (Honors)). [20180816]

23. Baek, W.-K., Jung, H.-S., Jo, M.-J. Lee, W. -J., Zhang, L., 2018, Ground Subsidence Observation of Solid Waste Landfill Area Using TerraSAR-X Multi-Temporal Radar Interferometry. International Journal of Urban Sciences, 26, 406-421 (Outstanding Paper Awarded by Univ. of Seoul). [20180508]

24. Kwon, S.-K, Jung, H.-S., Baek, W.-K., Kim, D.-S., 2017. Classification of Forest Vertical Structure in South Korea from Aerial Orthophoto and Lidar Data Using an Artificial Neural Network. Applied Sciences, 7, 1046, doi:10.3390/app7101046. [20170812]

SCOPUS, KCI

1. Baek, W.-K., Jung, H.-S., 2024.  Deep Learning Training Data for Phase Unwrapping of SAR Interferograms, Geo Data, 6(4), 463-470.  https://doi.org/10.22761/GD.2024.0051 

2. Kim, M., Baek, W.-K., Jung, H. S., Ryu, J.-H., 2024. Analysis of Micro-Sedimentary Structure Characteristics Using Ultra-High Resolution UAV Imagery: Hwangdo Tidal Flat, South Korea.  Korean Journal of Remote Sensing, 40(3), 295-305. https://doi.org/10.7780/kjrs.2024.40.3.6

3. Baek, W.-K., Lee, M.-J., Yu, H.-E., Ryu, J.-H., Kim, J.-C., 2023. Topographical Change Mapping of Estuarine Wetland, Gochang, Korea via Multi-Temporal Pixel-Frequency Approach using Sentinel-1,  Korean Journal of Remote Sensing, 39(6-3), 1747-1761. http://10.7780/kjrs.2023.39.6.3.7 (Grand Prize Awarded at 2023 Satellite Application Conference by the President of KARI )

4. Gong, S.-H., Baek, W.-K., Jung, H.-S., 2022.  Landslide Susceptibility Mapping Using Deep Neural Network and Convolutional Neural Network, Korean Journal of Remote Sensing, 38(6-2), 1723-1735.

5. Yu, J.-W., Yoon, Y.-W., Lee, E.-R., Baek, W.-K., Jung, H.-S., 2022.  Flood Mapping Using Modified U-NET from TerraSAR-X Images.  Korean Journal of Remote Sensing, 38(6_2), 1709-1722.

6. Baek, W.-K.,  Jung, H.-S., 2022. A Review on Deep-learning-based Phase Unwrapping Technique for Synthetic Aperture Radar Interferometry. Korean Journal of Remote Sensing, 38(6-2), 1589-1605.

7. Baek, W. -K., Lee, M.-J., Jung, H.-S., 2022. The Performance Improvement of U-Net model for Landcover Semantic Segmentation through Data Augmentation. Korean Journal of Remote Sensing, 38(6-2), 1663-1676.

8. Baek, W.-K., Lee, Y.-S., Park, S.-H., Jung, H.-S., 2021. Classification of Natural and Artificial Forests from KOMPSAT-3/3A/5 Images Using Deep Neural Network. Korean Journal of Remote Sensing, 37(6-3), 1965-1974.

9. Baek, W.-K., Yu, J.-W., Yoon, Y.-W., Jung, H.-S., Lim, J., 2021, The  Relative  Height  Error  Analysis of  Digital  Elevation  Model on  South  Korea to  Determine the Target Vertical Accuracy of  CAS500-4, Korean Journal of Remote Sensing, 37(5-1), 1043-1059.

10. Hong, S.-J., Baek, W.-K., Jung, H.-S., 2019, Mapping Precise Two-dimensional Surface Deformation on Kilauea Volcano, Hawaii using ALOS2 PALSAR2 Spotlight SAR Interferometry, Korean Journal of Remote Sensing, 35(6-3), 1235-1249.

11.  Baek, W.-K., Kim, M., Han, H.–G., Jung, H.-S., Hwang, E.-H., Kim, H., Sun, J. Chang, E.-C., Lee, M., 2019, The analysis of damage caused by volcanic ash deposition using spatial-information-based volcanic ash damage sector and volcanic ash diffusion simulation of Mt. Aso volcano eruption scenario,  Korean Journal of Remote Sensing, 35(6-3), 1221-1233.

12. Han, H.–G., Baek, W.-K., Jung, H.-S., Kim, M. Lee, M., 2019, A Study on the Volcanic Ash Damage Sector Selection based on the Analysis of Overseas Cases and Domestic Spatial Information, Korean Journal of Remote Sensing, 35(5-1), 751-761.

13. Baek, W.-K., Jung, H.-S., 2019, A review of change detection techniques using multi-temporal synthetic aperture radar images, Korean Journal of Remote Sensing, 35(5-1), 737-750.

14. Lee, Y.-S., Baek, W.-K., Jung, H.-S., 2019, Forest Vertical Structure Classification in Gongju City, Korea from Optic and RADAR Satellite Images using Artificial Neural Network, Korean Journal of Remote Sensing, 35(3), 447-455.

15. Lee, Y.-S., Jung, H.-S., Park, S.-H., Baek, W.-K., 2018, Classification of natural and artificial forests from KOMPSAT series images using artificial neural network, Korean Journal of Remote Sensing, 34(6-3), 1399-1414.

16. Baek, W.-K., Jung, H.-S., 2018, Precise measurements of the along-track surface deformation related to the 2016 Kumamoto Earthquakes via ionospheric correction of Multiple-Aperture SAR Interferograms, Korean Journal of Remote Sensing, 34(6-4), 1489-1501.

17. Baek, W.-K., Jung, H.-S., Chae, S. -H., Lee, W. -J., 2018, Two-dimensional velocity measurements of Uvêrsbreen glacier in Svalbard using TerraSAR-X offset tracking approach, Korean Journal of Remote Sensing, 34(3), 495-506.

18. Baek, W.-K., Park, S.-H., Jeong, N.-K., Kwon, S., Jin, W.-J., Jung, H.-S., 2017, A Study for the Techniques and Applications of NIR Remote Sensing Based on Statistical Analysis of NIR-related Papers. Korean Journal of Remote Sensing, 33(5), 889-900.

19. Kim, D.-S., Jung, H.-S., Baek, W.-K., 2016, Comparative Analysis among Radar Image Filters for Flood Mapping. Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography, 34(1), 44-52.

20. Lee, W. -J., Jung, H. -S., Chae, S. -H., Baek, W.-K., 2015, Enhancement of Ionospheric Correction Method Based on Multiple Aperture Interferometry. Korean Journal of Remote Sensing, 31(2), 101-110.

SELECTED CONFERENCE PRESENTATION

1. Baek, W.-K, Jung, H.-S., 2023, Performance enhancement of deep-learning-based InSAR phase unwrapping by optimizing training data and model structure. Fringe 2023.

2. Baek, W.-K, Jung, H.-S., 2022, Unwrapping of SAR Interferometric phase using deep learning regression model: focusing on optimization of training data and model structure, American Geophysical Union 2022 fall meeting, NH45B-0464.

3. Baek, W.-K, Jung, H.-S., Kim, S.-W., 2019, Mapping three-dimensional deformation related to the 2018 Sulawesi earthquake using multi-kernel offset tracking method, European Geosciences Union General Assembly 2019, 21, EGU2019-18931.

4. Baek, W.-K, Jung, H.-S., Kim, T.-S., 2018, Analysis on horizontal and vertical surface deformation of the 6th North Korea Nuclear Test in 2017 via SAR offset tracking, Proceedings of the KSRS Fall Conference 2018 (Student Prize Awarded).

5.  Baek, W.-K, Jung, H.-S., 2018, Modelling Magma Source in Mt. Baekdu Volcano using Sentinel-1 Interferometry, Proceedings of the ACRS Conference 2018.

6. Baek, W.-K, Jo, M.-J., Jung, H.-S., 2018, Three-Dimensional Surface Deformation Related to the 2017 North Korea Nuclear Test Observed by SAR Offset-Tracking Approach, Valencia, Spain, International Geoscience and Remote Sensing Symposium 2018.

7. Baek, W.-K, Jung, H.-S., 2018, Measurement of seaward ground displacements on coastal landfill area using radar interferometry, Beijing, China, International Society for Photogrammetry and Remote Sensing(ISPRS) Technical Commission III Symposium (SCOPUS)

8. Baek, W.-K, Jung, H.-S., Won, J.-S., Kim, S.-W., Hong, S.-H., Lee, C.-W., Jo, M.-J., Choi, J.-H., 2018, Three-dimensional measurement of the 2017 Pohang earthquake deformations via SAR interferometry, Pyeongchang, Korea, International Symposium on Remote Sensing 2018.

9. Baek, W.-K, Jung, H.-S., Chae, S.-H., 2017, Precise Three-Dimensional Mapping Of The 2016 Kumamoto Earthquake through the Integration of SAR Interferometry and Offset Tracking, Texas, USA, International Geoscience and Remote Sensing Symposium 2017.

10. Baek, W.-K, Jung, H.-S., Chae, S.-H., 2017, Precise Three-Dimensional Mapping Of The 2016 Kumamoto Earthquake via Advanced SAR Interferometry, Nagoya, Japan, International Symposium on Remote Sensing 2017.

11. Baek, W.-K, Jung, H.-S., Chae, S.-H., 2016, Mapping Three-Dimensional Surface displacements from 2016, Kumamoto Earthquake by combining Multiple-Aperture Interferometry and Conventional Interferometry, Proceedings of the KSRS Fall Conference 2016 (Student Prize Awarded).

12. Baek, W.-K, Jung, H.-S., Lee, W.-J., 2016, TerraSAR-X Satellite Monitoring of Landfill Surface Subsidence in The Noeul and Haneul parks, Munich, Germany, TerraSAR-X/TanDEM-X Science Team Meeting 2016

13. Baek, W.-K, Jung, H.-S., Jo, M.-J., Chae, S.-H., Jeong, N.-K., Lee, S., Kim, D., 2016, Measurement of surface deformation on Mt.Baekdu/Chanbai by using Sentinel-1 SAR Interferometry, Changchun, China, 6th International MAAR conference

14. Baek, W.-K, Jung, H.-S.,  2016, Measuring the Surface Deformation of Mt. Baekdu/Chanbai by Sentinel-1 SAR interferometry, Jeju, International Symposium on Remote Sensing 2016

15. Baek, W.-K, Jung, H.-S., Lee, W.-J., 2015, Observation of ground subsidence trend on World cup park, Seoul, Korea using TerraSAR-X Satellite Imagery, Kwangju, Korea, Proceedings of the KSRS Fall Conference 2015 (Student Prize Awarded).

16. Baek, W.-K, Jung, H.-S., Lee, W.-J., 2015, Measurement of ground subsidence in the World cup park, Seoul, Korea from multi-temporal SAR images Taiwan, International Symposium on Remote Sensing 2015.

PATENTS

1.  Jung, H.-S., Baek, W.-K., Chae, S.-H. "Method and Apparatus for Phase Unwrapping of Synthetic Aperture Radar (SAR) Interferogram Based on SAR Offset Tracking Surface Displacement Model"

• Korea patent publication No. 1021426740000

• PCT No. PCT/KR2019/010193

• US patent No. US 11,543,517 B2

2.   Jung, H.-S., Chae, S.-H., Baek, W.-K., Lee, W.-J. "Apparatus and Method for SAR Offset Tracking using Multiple-Displacement estimated Kernel", 

• Korea patent publication No. 1018045220000 

3. Jung, H.-S., Chae, S.-H., Baek, W.-K. "Apparatus and Method for Correction of Distortion on Displacement Map generated from Synthetic Aperture Radar Offset Tracking Method", 

• Korea patent publication No.  1018737320000