Publications

2025

Meng, Y., Zhao, S., Zhang, X., Philbeck, J., Mahableshwarkar, P., Feng, B., Soghier, L., & Hahn, J. (2025). Effect of Cognitive Distractors on Neonatal Endotracheal Intubation Performance: Insights from a Dual-Task Simulator. Virtual Worlds, 4(2), 20. [link]
Cheng, R., Zheng, Y., Feng, B., Qiu, C., Long, Z., Calderon, J. A., Zhang, X., Phillips, J. M., & Hahn, J. K. (2025). Maternal and fetal health status assessment by using machine learning on optical 3d body scans (No. arXiv:2504.05627). arXiv. [pdf]

2024

Y. Zheng, Z. Long, B. Feng, R. Cheng, K. Vaziri and J. K. Hahn, "D3BT: Dynamic 3D Body Transformer for Body Fat Percentage Assessment," in IEEE Journal of Biomedical and Health Informatics, vol. 29, no. 2, pp. 848-856, Feb. 2025, doi: 10.1109/JBHI.2024.3510519. [pdf]
Zheng, Y., Long, Z., Cheng, R., Feng, B., Vaziri, K., Zhang, X., & Hahn, J. K., "Predicting Nonalcoholic Fatty Liver Disease in Obese Populations with 3D Body Scans," 2024 46th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), Orlando, FL, USA, 2024, pp. 1-4, doi: 10.1109/EMBC53108.2024.10781798. [pdf]
Wang, Q., Xue, W., Zhang, X., Jin, F., & Hahn, J. (2024). Liver fat quantification network with body shape (No. arXiv:2405.11386). arXiv. [pdf]

2023

Meng, Y. & Hahn, J. K. (2023, October). An Automatic Grading System for Neonatal Endotracheal Intubation with Multi-Task Convolutional Neural Network. IEEE International Conference on Biomedical and Health Informatics (BHI'23) Pittsburgh, Pennsylvania. [pdf]
Zheng, Y., Long, Z., Zhang, X., & Hahn, J. K. (2023, April). 3D body shape for regional and appendicular body composition estimation. In Medical Imaging 2023: Image Processing (Vol. 12464, pp. 531-539). SPIE. [link]

2022

Wang, Q., Xue, W., Zhang, X., Jin, F., & Hahn, J. (2022). S2FLNet: Hepatic steatosis detection network with body shape. Computers in biology and medicine, 140, 105088. [pdf]
Zheng, Y., Wang, Q., & Hahn, J. K. (2022, July). Liver Fat Assessment with Body Shape. In 2022 44th Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC) (pp. 2716-2719). IEEE. [pdf]

2021

Alahmadi, R., & Hahn, J. (2022). Improve image captioning by estimating the gazing patterns from the caption. In Proceedings of the IEEE/CVF Winter Conference on Applications of Computer Vision (pp. 1025-1034). [pdf]
Li, W., & Hahn, J. K. (2021). Efficient ray casting polygonized isosurface of binary volumes. The Visual Computer, 37(12), 3139-3149. [pdf]
Wang, Q., Xue, W., Zhang, X., Jin, F., & Hahn, J. (2021). Pixel-wise body composition prediction with a multi-task conditional generative adversarial network. Journal of biomedical informatics, 120, 103866. [link]
Zhao, S., Zhang, X., Jin, F., & Hahn, J. (2021, November). An Auxiliary Tasks Based Framework for Automated Medical Skill Assessment with Limited Data. In 2021 43rd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC) (pp. 1613-1617). IEEE. [pdf]
Wang, Q., Lu, Y., Zhang, X., & Hahn, J. (2021). Region of interest selection for functional features. Neurocomputing, 422, 235-244. [pdf]

2020

Zhao, S., Xiao, X., Wang, Q., Zhang, X., Li, W., Soghier, L., & Hahn, J. (2020, November). An intelligent augmented reality training framework for neonatal endotracheal intubation. In 2020 IEEE International Symposium on Mixed and Augmented Reality (ISMAR) (pp. 672-681). IEEE. [pdf]
Hudson, G. M., Lu, Y., Zhang, X., Hahn, J., Zabal, J. E., Latif, F., & Philbeck, J. (2020). The development of a BMI-guided shape morphing technique and the effects of an individualized figure rating scale on self-perception of body size. European journal of investigation in health, psychology and education, 10(2), 579-594. [pdf]
Zhao, S., Xiao, X., Zhang, X., Meng, W. L. Y., Soghier, L., & Hahn, J. K. (2020, July). Automated assessment system for neonatal endotracheal intubation using dilated convolutional neural network. In 2020 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC) (pp. 5455-5458). IEEE. [pdf]
Xiao, X., Zhao, S., Zhang, X., Soghier, L., & Hahn, J. (2020, July). Automated assessment of neonatal endotracheal intubation measured by a virtual reality simulation system. In 2020 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC) (pp. 2429-2433). IEEE. [pdf]
Xiao, X., Zhao, S., Meng, Y., Soghier, L., Zhang, X., & Hahn, J. (2020, March). A physics-based virtual reality simulation framework for neonatal endotracheal intubation. In 2020 IEEE Conference on Virtual Reality and 3D User Interfaces (VR) (pp. 557-565). IEEE. [pdf]
Zhao, S., Li, W., Zhang, X., Xiao, X., Meng, Y., Philbeck, J., ... & Hahn, J. (2020, March). Automated assessment system with cross reality for neonatal endotracheal intubation training. In 2020 IEEE Conference on Virtual Reality and 3D User Interfaces Abstracts and Workshops (VRW) (pp. 738-739). IEEE. [pdf]
Li, W., Zhao, S., Xiao, X., & Hahn, J. (2020). Robust template-based non-rigid motion tracking using local coordinate regularization. In Proceedings of the IEEE/CVF Winter Conference on Applications of Computer Vision (pp. 401-410). [pdf]

2019

Wang, Q., Lu, Y., Zhang, X., & Hahn, J. K. (2019, July). A novel hybrid model for visceral adipose tissue prediction using shape descriptors. In 2019 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) (pp. 1729-1732). IEEE. [pdf]
Lu, Y., Hahn, J. K., & Zhang, X. (2019). 3D shape-based body composition inference model using a Bayesian network. IEEE journal of biomedical and health informatics, 24(1), 205-213. [link]
Alsaleh, S. M., Aviles-Rivero, A. I., & Hahn, J. K. (2019). ReTouchImg: Fusioning from-local-to-global context detection and graph data structures for fully-automatic specular reflection removal for endoscopic images. Computerized Medical Imaging and Graphics, 73, 39-48. [link]
Lu, Y., & Hahn, J. K. (2019, March). Shape-based three-dimensional body composition extrapolation using multimodality registration. In Medical Imaging 2019: Image Processing (Vol. 10949, pp. 476-483). SPIE. [link]
Li, W., Xiao, X., & Hahn, J. (2019, January). 3d reconstruction and texture optimization using a sparse set of rgb-d cameras. In 2019 IEEE Winter Conference on Applications of Computer Vision (WACV) (pp. 1413-1422). IEEE. [pdf]

2018

Aviles, A. I., Alsaleh, S. M., Hahn, J., & Casals, A. (2017). Sliding to predict: Improving vision-based cardiac motion cancellation by modeling temporal interactions. Submitted to The International Journal for Computer Assisted Radiology and Surgery.
Alahmadi, R., Park, C. H., & Hahn, J. (2019, March). Sequence-to-sequence image caption generator. In Eleventh International Conference on Machine Vision (ICMV 2018) (Vol. 11041, pp. 85-91). SPIE. [link]
Lu, Y., McQuade, S., & Hahn, J. K. (2018, July). 3d shape-based body composition prediction model using machine learning. In 2018 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) (pp. 3999-4002). IEEE. [pdf]
Xiao, X., Li, W., Clawson, C., Karvani, D., Sondag, P., & Hahn, J. K. (2018). Evaluation of performance, acceptance, and compliance of an auto-injector in healthy and rheumatoid arthritic subjects measured by a motion capture system. Patient preference and adherence, 515-526. [link]
Lu, Y., Zhao, S., Younes, N., & Hahn, J. K. (2018). Accurate nonrigid 3d human body surface reconstruction using commodity depth sensors. Computer animation and virtual worlds, 29(5), e1807. [pdf]

2017

Alsaleh, S. M., Aviles, A. I., Casals, A., & Hahn, J. (2017). Escaping specularity: recovering specular-free video sequences from rank-constrained data. In ACM SIGGRAPH 2017 Posters (pp. 1-2). [pdf]
Aviles, A. I., Alsaleh, S. M., Hahn, J. K., & Casals, A. (2016). Towards retrieving force feedback in robotic-assisted surgery: A supervised neuro-recurrent-vision approach. IEEE transactions on haptics, 10(3), 431-443. [pdf]
Alsaleh, S. M.& Hahn, J. K. 2D+t Estimation of Light Reflection and Inpainting in Dynamic Objects, SIGGRAPH 16 Poster.

2016

Dai, L., Jiang, D. H., Ding, B., & Hahn, J. K. (2016). Improved Digital Image Restoration Algorithm Based on Criminisi. Journal of Digital Information Management, 14(5), 302-310. [pdf]
Alsaleh, S. M., Aviles, A. I., Sobrevilla, P., Casals, A., & Hahn, J. K. (2016, August). Adaptive segmentation and mask-specific Sobolev inpainting of specular highlights for endoscopic images. In 2016 38th annual international conference of the ieee engineering in medicine and biology society (embc) (pp. 1196-1199). IEEE. [pdf]
Alsaleh, S. M., Aviles, A. I., Sobrevilla, P., Casals, A., & Hahn, J. (2016, March). Towards robust specularity detection and inpainting in cardiac images. In Medical Imaging 2016: Image-Guided Procedures, Robotic Interventions, and Modeling (Vol. 9786, pp. 527-532). SPIE. [link]

2015

Aviles, A. I., Alsaleh, S. M., Hahn, J. K., & Casals, A. (2016). Towards retrieving force feedback in robotic-assisted surgery: A supervised neuro-recurrent-vision approach. IEEE transactions on haptics, 10(3), 431-443. [pdf]
Alassaf, M. H., Kowsari, K., & Hahn, J. K. (2015, July). Automatic, real time, unsupervised spatio-temporal 3d object detection using rgb-d cameras. In 2015 19th International Conference on Information Visualisation (pp. 444-449). IEEE. [pdf]
Alsaleh, S. M., Aviles, A. I., Sobrevilla, P., Casals, A., & Hahn, J. K. (2015, August). Automatic and robust single-camera specular highlight removal in cardiac images. In 2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) (pp. 675-678). IEEE. [pdf]
Alassaf, M. H., & Hahn, J. K. (2015, March). Automatic parcellation of longitudinal cortical surfaces. In Medical Imaging 2015: Image Processing (Vol. 9413, pp. 255-264). SPIE. [link]

2014

Radeva, N., Levy, L., & Hahn, J. (2014). Generalized temporal focus+ context framework for improved medical data exploration. Journal of digital imaging, 27, 207-219. [link]
Radeva, N., & Hahn, J. (2014). Visualization of tissue removal using focus+ context techniques. In Medicine Meets Virtual Reality 21 (pp. 325-331). IOS Press. [link]
Alassaf, M. H., Yim, Y., & Hahn, J. K. (2014, January). Non-rigid surface registration using cover tree based clustering and nearest neighbor search. In 2014 International Conference on Computer Vision Theory and Applications (VISAPP) (Vol. 1, pp. 579-587). IEEE. [link] [pdf] [Conference Website]
Westwood, J. D. (2014). Computer-based planning system for mandibular reconstruction. Medicine Meets Virtual Reality 21: NextMed/MMVR21, 196, 6. [link]
Kirmizibayrak, C., Wakid, M., Yim, Y., Hristov, D., & Hahn, J. K. (2014). Interactive focus+ context medical data exploration and editing. Computer Animation and Virtual Worlds, 25(2), 129-141. [link]
Soghier, L., Li, W., Burd, R., & Hahn, J. (2013). Computer-based Quantitative Assessment of Learner Performance during Neonatal Endotracheal Intubation: A Pilot Study. 14th International Meeting on Simulation in Healthcare (IMSH 2014), January 25-29, 2014, San Francisco, CA.
Radeva, N., & Hahn, J. (2014). Visualization of tissue removal using focus+ context techniques. In Medicine Meets Virtual Reality 21 (pp. 325-331). IOS Press. [link]

2013

Soghier, L., Li, W., Burd, R., & Hahn, J. (2013). Board 541-Technology Innovations Abstract Computer-Based Quantitative Assessment of Learner Performance during Neonatal Endotracheal Intubation: A Pilot Study (Submission# 1385). Simulation in Healthcare, 8(6), 630. [link]

2012

Kirmizibayrak, C., Yim, Y., Wakid, M., & Hahn, J. (2012). Interactive visualization and analysis of multimodal datasets for surgical applications. Journal of Digital Imaging, 25, 792-801.[link]
Kirmizibayrak, C., Radeva, N., Wakid, M., Philbeck, J., Sibert, J., & Hahn, J. (2012). Evaluation of Gesture Based Interfaces for Medical Volume Visualization Tasks. International Journal of Virtual Reality, 11(2), 1-13. [pdf]

2011

Kirmizibayrak, C., Radeva, N., Wakid, M., Philbeck, J., Sibert, J., & Hahn, J. (2011, December). Evaluation of gesture based interfaces for medical volume visualization tasks. In Proceedings of the 10th international conference on Virtual reality continuum and its applications in industry (pp. 69-74). [link]
Wakid, M., Kirmizibayrak, C., & Hahn, J. K. (2011, July). Texture mapping volumes using GPU-based polygon-assisted raycasting. In 2011 16th International Conference on Computer Games (CGAMES) (pp. 162-166). IEEE. doi: 10.1109/CGAMES.2011.6000333 [link]
Kirmizibayrak, C., Honorio, J., Jiang, X., Mark, R., & Hahn, J. K. (2011). Digital analysis and visualization of swimming motion. International Journal of Virtual Reality, 10(3), 9-16. [pdf]
Kirmizibayrak, C., Wakid, M., Bielamowicz, S., Hahn,J. K. (2011, June). An Interactive Multimodal Visualization Method For Medical Data Exploration and Image Guided Surgeries. 2011 Annual Meeting of the Society for Imaging Informatics in Medicine (SIIM), Washington, DC. Honorable Mention Award. [abstract]
Yim, Y., Chen, X., Wakid, M., Bielamowicz, S., & Hahn, J. (2011, March). 2D-3D registration using gradient-based MI for image guided surgery systems. In Medical Imaging 2011: Visualization, Image-Guided Procedures, and Modeling (Vol. 7964, pp. 827-832). SPIE. [link] [ps]
Wakid, M., Kirmizibayrak, C., Yim, Y., Hahn, J. K. Merging Camera Images and 3D Anatomical Data for Computer-Assisted Surgery. CG&A-2011-03-0030, IEEE Computer Graphics and Applications, Submitted.
Kirmizibayrak, C., Radeva, N., Wakid, M., Philbeck, J., Sibert, J., & Hahn, J. (2011, December). Evaluation of gesture based interfaces for medical volume visualization tasks. In Proceedings of the 10th international conference on Virtual reality continuum and its applications in industry (pp. 69-74). [pdf]
Kirmizibayrak, C., Honorio, J., Jiang, X., Mark, R., & Hahn, J. K. (2011). Digital analysis and visualization of swimming motion. International Journal of Virtual Reality, 10(3), 9-16. [ps]

2010

Yim, Y., Wakid, M., Kirmizibayrak, C., Bielamowicz, S., & Hahn, J. (2010). Registration of 3D CT data to 2D endoscopic image using a gradient mutual information based viewpoint matching for image-guided medialization laryngoplasty. Journal of Computing Science and Engineering, 4(4), 368-387. [pdf]
Kirmizibayrak, C., Wakid, M., Hahn, J.K., & Bielamowicz, S. (2010). Interactive Visualization for Image Guided Medialization Laryngoplasty. Computer Graphics International 2010, 8-11 June 2010, Singapore. [pdf]
Lee, H., Baek, N., & Hahn, J. K. (2010). OpenGL ES 1.1 software implementation on mobile phones. IEICE Electronics Express, 7(12), 880-885. [pdf]

2009

Kim, J. W., Fouad, H., Sibert, J. L., & Hahn, J. K. (2009). Perceptually motivated automatic dance motion generation for music. Computer Animation and Virtual Worlds, 20(2‐3), 375-384. [pdf]
Von Loebbecke, A., Mittal, R., Mark, R., & Hahn, J. (2009). A computational method for analysis of underwater dolphin kick hydrodynamics in human swimming. Sports Biomechanics, 8(1), 60-77. [pdf]
Jin, G., Baek, N., Hahn, J. K., Bielamowicz, S., Mittal, R., & Walsh, R. (2009). Image guided medialization laryngoplasty. Computer Animation and Virtual Worlds, 20(1), 67-77. [pdf]
Kim, J. W., Fouad, H., Sibert, J. L., & Hahn, J. K. (2009). Perceptually motivated automatic dance motion generation for music. Â€Â 22nd Annual Conference on Computer Animation and Social Agents, Het Trippenhuis, Amsterdam, the Netherlands, June 17-19, 2009. [link]

2008

Luo, H., Mittal, R., Zheng, X., Bielamowicz, S. A., Walsh, R. J., & Hahn, J. K. (2008). An immersed-boundary method for flow–structure interaction in biological systems with application to phonation. Journal of computational physics, 227(22), 9303-9332. [link] [pdf]

2007

Jin, G., Lee, S. J., Hahn, J. K., Bielamowicz, S., Mittal, R., & Walsh, R. (2007, March). Active illumination based 3D surface reconstruction and registration for image guided medialization laryngoplasty. In Medical Imaging 2007: Visualization and Image-Guided Procedures (Vol. 6509, pp. 77-88). SPIE. San Diago, CA. [pdf]
Choi, Y. K., & Hahn, J. K. (2007, December). Shrink-wrapped isosurface from cross sectional images. IEICE transactions on information and systems, 90(12), 2070-2076. [pdf]

2006

Schultz, G., Hancock, A., Wakid, M., Hahn, J. K. (2006, November). Translation Of 3-D EMA To Visual Display Of Lingual Movements. American Speech Language Hearing Association, Miami Beach.
Jin, G., Lee, S. J., Hahn, J. K., Bielamowicz, S., Mittal, R., & Walsh, R. (2006). 3D surface reconstruction and registration for image guided medialization laryngoplasty. In Advances in Visual Computing: Second International Symposium, ISVC 2006 Lake Tahoe, NV, USA, November 6-8, 2006 Proceedings, Part I 2 (pp. 761-770). Springer Berlin Heidelberg. [pdf]
Jin, G., & Hahn, J. K. (2006). High-resolution video from series of still photographs. In Advances in Visual Computing: Second International Symposium, ISVC 2006 Lake Tahoe, NV, USA, November 6-8, 2006 Proceedings, Part I 2 (pp. 901-910). Springer Berlin Heidelberg. [pdf]
Luo, H., Zheng, X., Mittal, R., Dong, H., Bielamowicz, S., Walsh, R. & Hahn, J. (2006, September). Numerical Analysis of Glottal Dynamics Using an Immersed-Boundary Method. Abstract. The 30th Annual Meeting of the American Society of Biomechanics. Blacksburg, VA, USA.
Mittal, R., Luo, H., Zheng, X., Dong, H., Bielamowicz, S., Walsh, R. & Hahn, J. (2006, July). Development of a High-fidelity Biophysical Model of Vocal Fold Vibration and Glottal Aerodynamics. The 5th International Conference on Voice Physiology and Biomechanics. Tokyo, Japan.
Zheng, X., Luo, H., Mittal, R., Dong, H., Bielamowicz, S., Walsh, R. & Hahn, J. (2006, June). Toward a High Fidelity Biophysical Model of Vocal Fold Vibration and Glottal Aerodynamics. In 2006 Summer Bioengineering Conference, Amelia Island, Florida, USA.
Schulz, G., Hahn, J., Jin, G., Kiraly, J., Carstens, B., & Carstens, B. (2006, March). Translation of 3-D articulatory signals acquired by electromagnetic articulography to a visual display of lingual movements for biofeedback: Preliminary results. In International Conference on Speech Motor Control, Austin, TX. [pdf]
Ha, J. S., Yoo, K. H., & Hahn, J. K. (2006). Characterization of polyhedron monotonicity. Computer-Aided Design, 38(1), 48-54. [pdf]
Jin, G., & Hahn, J. K. (2006). High-Resolution Video from Series of Still Photographs. Lecture notes in computer science, 901-910. [pdf]
Jin, G., Lee, S. J., Hahn, J. K., Bielamowicz, S., Mittal, R., & Walsh, R. (2006). 3D Surface Reconstruction and Registration for Image Guided Medialization Laryngoplasty. Lecture notes in computer science, 761-770. [pdf]

2005

Jin, G., & Hahn, J. (2005, December). Adding hand motion to the motion capture based character animation. In International Symposium on Visual Computing (pp. 17-24). Berlin, Heidelberg: Springer Berlin Heidelberg. [pdf]
Biomedical Computing. Health Sciences Research Day, GWU, poster session, April 22, 2005.
Jin, G., & Hahn, J. (2005). Adding hand motion to the motion capture based character animation. Lecture notes in computer science, 17-24. [pdf]

2004

Jin, G., Kim, D. H., Hahn, J., & Fraedrich, D. S. Infrared ship signature prediction using measured BRDF data and global illumination rendering. SPIE 2004. [pdf]
"Timbre Trees: Integrating Sounds and Images," Audio Anecdotes, A K Peters LTD, Ken Greenbaum and Ronen Barzel editors, 2004.

2003

Powell Jr, A. M., SH, G. G., Miranda, J., Kennedy, R., & Zuzolo, P. A. (2003, February). INSPECT: A New Tool for Emergency and Consequence Management. American Meteorological Society Conference, Symposium on the F-Scale and Severe Weather Damage Assessment, 8-14. [pdf][link]
Surgical Simulators. US- Morocco Joint Workshop on Information Technology, March 17-19, 2003, Rabat, Morocco .
Lee, S. J., Hahn, J. K., Powell Jr, A. M., & Greene, G. (2003, June). INSPECT: a dynamic visual query system for geospatial information exploration. In Visualization and Data Analysis 2003 (Vol. 5009, pp. 312-322). SPIE.[pdf]
Al-Ghreimil, N., & Hahn, J. K. (2003). Combined partial motion clips. The 11th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision'2003, WSCGÂ€Â™2003, February 3-7, 2003, Plzen, Czech Republic. [pdf]
Manyak, M. J., Santangelo, K., Hahn, J., Kaufman, R., Carleton, T., Hua, X. C., & Walsh, R. J. (2003). Virtual reality surgical simulation for lower urinary tract endourologic surgery. Bladder Disease, Part A: Research Concepts and Clinical Applications, 841-852. [link]

2002

Lee, J. M., Ku, J. H., Jang, D. P., Kim, D. H., Choi, Y. H., Kim, I. Y., & Kim, S. I. (2002). Virtual reality system for treatment of the fear of public speaking using image-based rendering and moving pictures. Cyberpsychology & behavior, 5(3), 191-195. [pdf]
Kim, D., & Hahn, J. K. (2002). Hardware-assisted rendering of cylindrical panoramas. Journal of Graphics Tools, 7(4), 33-42. [pdf]
Kim, D., & Hahn, J. K. (2002, September). Projective texture mapping with full panorama. In Computer Graphics Forum (Vol. 21, No. 3, pp. 421-430). Oxford, UK: Blackwell Publishing, Inc. [pdf]
Walsh, R. J., Manyak, M., Kaufman, R., Loew, M. & Johnson, J. (2002, April). The Laboratory for Advanced Computer Applications in Medicine, Abstract to Experimental Biology Annual Meeting, New Orleans , LA.
Hahn, J. K., Manyak, M. J., Jin, G., Kim, D., Rewcastle, J., Kim, S., & Walsh, R. J. (2002). Cryotherapy simulator for localized prostate cancer. In Medicine Meets Virtual Reality 02/10 (pp. 173-178). IOS Press. [pdf]
Manyak, M. J., Santangelo, K., Hahn, J., Kaufman, R., Carleton, T., Hua, X. C., & Walsh, R. J. (2002). Virtual reality surgical simulation for lower urinary tract endoscopy and procedures. Journal of endourology, 16(3), 185-190. [pdf]
Hahn, J. K., Manyak, M. J., Jin, G., Kim, D., Rewcastle, J., Kim, S., & Walsh, R. J. (2002). Cryotherapy simulator for localized prostate cancer. Studies in Health Technology and Informatics, 85, 173-178. [link]
Fouad, H. & Hahn, J. (2002). A Framework for Integrating Audio in Virtual Environments. Selected SPIE Papers on CD-ROM, Volume 12, Stereoscopic Displays and Applications. Editors: Andrew J. Woods, John O. Merritt, Stephen A. Benton, Scott S. Fisher, Mark T. Bolas.
Kim, D., & Hahn, J. K. (2002, September). Projective texture mapping with full panorama. Eurographics 2002, Saarbrucken, Germany. [link]

2001

Manyak, M., Jin, G., Kim, D., Rewcasle, J., Kim, S. & Walsh, R. (2001, May). Development of a Cryotherapy Simulator for Prostate Cancer. Society of Urology and Engineering section of AUA, Orlando, Florida.
Kim, D. & Hahn, J. K. (2001, August). Light Field Rendering with Triangular Viewpoint Mesh. Conference Abstracts and Applications, ACM SIGGRAPH 2001, Los Angeles. [pdf]
Lee, D., Bae, H. J., Tae Kim, C., Lee, D. C., Jung, D. H., Lee, N. K., ... & Hahn, J. K. (2001). Reproducing works of Calder. The Journal of Visualization and Computer Animation, 12(2), 81-91. [pdf]
Ha, J. S., & Cheon, E. H. (2001). An Implementation of an Edge-based Algorithm for Separating and Intersecting Spherical Polygons. Journal of KIISE: Computer Systems and Theory, 28(9), 479-490. [pdf]

2000

Lee, J. W., Baek, N., Kim, D. & Hahn, J. K. (2000, August). A Procedural Approach to Solving Constraints of Articulated Bodies. Eurographics 2000 Short Presentations Programme, Interlaken, Switzerland. [pdf]
Jin, G., Lee, J., Shin, Y. G., Hahn, J. K. (2000). Cryotherapy for Localized Prostate Cancer. HCI2000. [pdf]

1999

Oh, K. M., Hahn, J. K., Lim, M. L., Lee, E. T., Choi, J. D., Lee, C. S., & Park, C. J. (1999, December). A Segmentation and Abstraction of Blood Vessels from Volume Data for Surgical Simulation. In ICAT’99 International Conference Artificial Real Telexistence (Vol. 9, pp. 92-97). [pdf]
Voß, G., Hahn, J. K., Müller, W., & Lindeman, R. (1999, January). Virtual cutting of anatomical structures. In Medicine Meets Virtual Reality (MMVR '99) (pp. 381-383). San Francisco, CA, IOS Press. [pdf]
Hahn, J. K., Carleton, T., Winick, A. B., Al-Ghreimil, N. & Walsh, R. J. (1999, January). Interventional Radiology Training Environment. (Presentation) Medicine Meets Virtual Reality (MMVR '99), San Francisco, CA.
Lindeman, R. W., Sibert, J. L., & Hahn, J. K. (1999, May). An Empirical Study of User Interfaces for Immersive Virtual Environment. In Proc. ACM CHI'99. [ps] [pdf]
Lindeman, R. W., Sibert, J. L., & Hahn, J. K. (1999, March). Hand-held windows: towards effective 2D interaction in immersive virtual environments. In Proceedings IEEE Virtual Reality (Cat. No. 99CB36316) (pp. 205-212). IEEE. [ps] [pdf]
Chung, S. K., & Hahn, J. K. (1999, May). Animation of human walking in virtual environments. In Proceedings Computer Animation 1999 (pp. 4-15). IEEE. [pdf]
Fouad, H., Narahari, B., & Hahn, J. K. (1999). A real-time parallel scheduler for the imprecise computation model. PDCP, Special Issue on Parallel and Distributed Real-Time Systems, 2(1), 15-23. [pdf]

1998

Yamashita, J., Yi, C., Lindeman, R. W., Fukui, Y., & Morikawa, O. (1998, July). Plane-shape perception using point-contact type force feedback device. In ACM SIGGRAPH 98 Conference abstracts and applications (p. 274). [ps] [pdf]
Hahn, J. K., Kaufman, R., Winick, A. B., Carleton, T., Park, Y., Lindeman, R., ... & Sankar, S. (1998, January). Training environment for inferior vena caval filter placement. In Medicine Meets Virtual Reality (MMVR) (pp. 291-297). San Diego, CA, IOS Press. [pdf]
Hahn, J. K., Fouad, H., Gritz, L., & Lee, J. W. (1998, February). Integrating sounds and motions in virtual environments. Presence: Journal of Teleoperations and Virtual Environments, 7(1), 67-77. [pdf]

1997

Fouad, H., Ballas, J., & Hahn, J. (1997, November). Perceptually based scheduling algorithms for real-time synthesis of complex sonic environments. In Proceedings of the International Conference on Auditory Display (pp. 2-5). Palo Alto, CA. [pdf]
Wiley, D. J., & Hahn, J. K. (1997). Interpolation synthesis of articulated figure motion. IEEE Computer Graphics and Applications, 17(6), 39-45. [pdf]
Bergen, D., Hahn, J. & Bock, P. (1997). An Adaptive Approach for Reactive Actor Design. Proceedings of the Fourth European Conference on Artificial Life (ECAL97), MIT Press. [pdf]
Gritz, L., & Hahn, J. K. (1997). Genetic programming evolution of controllers for 3-D character animation. Genetic Programming, 97, 2. [pdf]
Wiley, D. J., & Hahn, J. K. (1997, March). Interpolation Synthesis for Articulated Figure Motion. In Virtual Reality Annual International Symposium (pp. 156-156). Albuquerque, NM. IEEE Computer Society. [pdf]

1996

Park, Y., Lindeman, R., & Hahn, J. (1996, October). X-ray Casting: Fast Volume Visualization Using 2-D Texture Mapping Techniques. In The Seventh Annual IEEE Visualization Conference (Vol. 5). San Francisco, CA. [ps] [pdf]
Westenhofer, B., & Hahn, J. K. (1996, June). Using kinematic clones to control the dynamic simulation of articulated figures. In Proceedings of Computer Graphics International'96 (pp. 26-35). Pohang, Korea. IEEE. [pdf]
Lee, S. Y., Chwa, K. Y., Hahn, J., & Shin, S. Y. (1996). Image morphing using deformation techniques. The Journal of Visualization and Computer Animation, 7(1), 3-23. [pdf]
Fouad, H. & Hahn, J. (1996). A Framework for Integrating Audio in Virtual Environments. IS&T/SPIE Symposium on Electronic Imaging: Science & Technology, San Jose, CA. [ps]
Gritz, L., & Hahn, J. K. (1996). BMRT: A global illumination implementation of the RenderMan standard. Journal of Graphics Tools, 1(3), 29-47. [pdf]

1995

Mishra, S., & Hahn, J. (1995, August). Mapping motion to sound and music in computer animation and ve. Invited Paper, Proceedings of Pacific Graphics. Seoul, Korea.[pdf]
Hahn, J., Fouad, H., Gritz, L. & Lee J.W. Integrating Sounds in Virtual Environments. Presence Journal. [ps]
Hahn, J. K., Geigel, J., Lee, J. W., Gritz, L., Takala, T., & Mishra, S. (1995). An integrated approach to motion and sound. The Journal of Visualization and Computer Animation, 6(2), 109-123. [pdf]
Gritz, L., & Hahn, J. K. (1995). Genetic programming for articulated figure motion. The Journal of Visualization and Computer Animation, 6(3), 129-142. [pdf]
Wiley, D. J., & Duckworth, A. N. (1995, October). Adaptive level of detail technique for real-time display in virtual reality. In Tools and Techniques for Modeling and Simulation (24th Applied Imagery Pattern Recogition workshop). Washington D.C. SPIE, Bellingham, Wash. [ps]

1994

Favre, J., & Löhner, R. (1994). Ray tracing with a space‐filling finite element mesh. International journal for numerical methods in engineering, 37(20), 3571-3580. [pdf]
Favre, J. M., & Hahn, J. (1994, October). An object oriented design for the visualization of multi-variable data objects. In Proceedings Visualization'94 (pp. 318-325). Washington, DC. IEEE. [pdf]
Ignatius E., Senay H. & Favre J. (1994, December). An Intelligent System for Visualization Assistance. Journal of Visual Languages and Computing.
Lee, S. Y., Chwa, K. Y., Hahn, J., & Shin, S. Y. (1994, May). Image morphing using deformable surfaces. In Proceedings of Computer Animation'94 (pp. 31-39). Geneva, Switzerland, IEEE Computer Society Press. [pdf]

1993

Hahn, J. K., Gritz, L., Darken, R., Geigel, J., & Lee, J. W. (1993). An integrated virtual environment system. Presence: Teleoperators & Virtual Environments, 2(4), 353-360. [pdf]
Takala, T., Hahn, J., Gritz, L., Geigel, J., & Lee, J. W. (1993, September). Using physically-based models and genetic algorithms for functional composition of sound signals, synchronized to animated motion. In Proceedings of the international computer music conference (pp. 180-180). Tokyo, Japan. [pdf]

1992

Takala, T., & Hahn, J. (1992, July). Sound rendering. ACM SIGGRAPH Computer Graphics, 26(2), 211-220. [pdf]

1989

The Use of Simulation Techniques for Motion Control in Computer Graphics, Ph.D. Dissertation, Department of Computer and Information Science, The Ohio State University , Columbus , 1989.

1988

Hahn, J. K. (1988, August). Realistic animation of rigid bodies. ACM SIGGRAPH Computer Graphics, 22(4), 299-308. [pdf]