Geng-Shi Jeng

Geng-Shi Jeng (鄭耿璽)

Associate Professor, Institute of Electronics, National Yang Ming Chiao Tung University. 2021/8-present

Assistant Professor, Institute of Electronics, National Yang Ming Chiao Tung University. 2020/2-2021/7

EDUCATION

National Taiwan University

Ph.D., Graduate Institute of Communication Engineering, Dept. of Electrical Engineering

National Taiwan University

M.S., Dept. of Electrical Engineering        

National Chiao Tung University

B.S., Dept. of Electronics Engineering

WORK EXPERIENCE 

Visiting Scientist, Bioengineering, University of Washington, Seattle. 2017-2019

Chief Technology Officer, S-Sharp. 2011-2017

Director, Coretronic Display Solution Corporation. 2009-2011

Engineer, Industrial Technology Research Institute (ITRI). 2006-2009

HONORS & AWARDS

21st National Innovation Award, 2024

Honorable Mention Award, SEMBA 2022, Taiwan

Best Paper Award, TSBME 2021 & ISET 2021, Taiwan.

Cum Laude Poster Award, 2005 Proceeding of SPIE Medical Imaging, San Diego, CA.

SPECIALIZATION & SKILLS

Medical ultrasound systems (beamforming, signal processing, and circuits)

Signal processing

Biomedical circuit design

Medical imaging systems

Parallel computing on medical imaging

PUBLICATION

Journal paper

1.      J.-W. Hu, M.-T. Lo, C.-Y. Chen, C.-S. Chuang, C.-L. Yeh, F.-B. Liu, P.-Y. Liu, C.-S. Yao, B.-C. Lai, H.-C. N. Wang, T.-H. Sang, G.-S. Jeng*, “Design of a Low-Cost, High-Resolution Underwater Acoustic Imager with Integrated Deep Learning Enhancement,” IEEE Sensors Journal, to be published. 10.1109/JSEN.2025.3621329

2.      B.-Y. Hsieh, M.-H. Lin, C.-Y. Lu, P.-S. Chen, Y.-C. J. Kao, W.-H. Chan, S.-Y. Chu, and G.-S. Jeng*, “Confidence-Enhanced Flow Trajectory Imaging Using Speckle Tracking with Multi-Angle Plane Waves,” Ultrasonics, vol. 156, pp. 107760, Dec. 2025. 10.1016/j.ultras.2025.107760

3.      K.-C. Huang, C.-E. Lin, D.-S. Lin, T.-T. Lin, C.-K. Wu, G.-S. Jeng, L.-Y. Lin, and L.-C. Lin, “Video Transformer for Segmentation of Echocardiography Images in Myocardial Strain Measurement,” Journal of Imaging Informatics in Medicine, pp. 1–19, 2025. 10.1007/s10278-025-01682-5

4.      G.-S. Jeng*, S. Chen, L.-T. Hsieh, and M.-T. Lo, “Contactless Respiratory Waveform Estimation Using Ultrasound Planar Array,” IEEE Open Journal of Ultrasonics, Ferroelectrics, and Frequency Control, vol. 5, pp. 23–32, Mar. 2025. 10.1109/OJUFFC.2025.3552048

5.      G.-S. Jeng*, P.-S. Chen, M.-Y. Hsieh, Z. Liu, J. Langdon, S. Ahn, L. H. Staib, J. C Stendahl, S. Thorn, A. J. Sinusas, J. S. Duncan, and M. O'Donnell “Coordinate-Independent 3-D Ultrasound Principal Stretch and Direction Imaging,” IEEE Trans. on Biomedical Engineering, vol. 71, no.11, pp. 3312 – 3323, Nov. 2024. 10.1109/TBME.2024.3420220

6.      K.-C. Huang, D. S.-H. Lin, G.-S. Jeng, T.-T. Lin, L.-Y. Lin, C.-K. Lee, and L.-C. Lin, "Left Ventricular Segmentation, Warping, and Myocardial Registration for Automated Strain Measurement," Journal of Imaging Informatics in Medicine, vol.37, pp. 2274–2286, 2024. 10.1007/s10278-024-01119-5  

7.      G.-S. Jeng, C.-L. Yeh, C.-L. Lee, Y.-S. Yang, L.-Y. Tseng and P.-C. Li, “Ultrasound Shear-Wave Computed Tomography for Elasticity Imaging,” Applied Physics Letters, vol. 121, no. 043702, Jul. 2022. 10.1063/5.0100628

8.      A. Lu, S. S. Ahn, K. Ta, N. Parajuli, J. C. Stendahl, Z. Liu, N. E. Boutagy, G.-S. Jeng, L. H. Staib, M. O’Donnell, A. J. Sinusas, and J. S. Duncan, “Learning-based Regularization for Cardiac Strain Analysis via Domain Adaptation,” IEEE Trans. Med. Imag., vol. 40, pp. 2233–2245, Sep. 2021. 10.1109/TMI.2021.3074033

9.      G.-S. Jeng, Y.-A. Wang, P.-Y Liu, and P.-C. Li, “Laser-Generated Leaky Acoustic Wave Imaging for Interventional Guidewire Guidance,” IEEE Trans. on Ultrasonics, Ferroelectrics and Frequency Control. vol. 68, pp. 2496 – 2506, Jul. 2021. 10.1109/TUFFC.2021.3069474

10.   G.-S. Jeng, M.-L. Li, M. Kim, S.J. Yoon, J.J. Pitre, D.S. Li, I. Pelivanov, and M. O’Donnell, " Real-Time Interleaved Spectroscopic Photoacoustic and Ultrasound (PAUS) Scanning with Simultaneous Fluence Compensation and Motion Correction," Nature Communications, vol. 12, no. 1, Art. no. 716, 2021. 10.1038/s41467-021-20947-5

11.   D. S. Li, G.-S. Jeng, J, J. Pitre Jr., M. Kim, L. D. Pozzo, and M. O’Donnell, " Spatially Localized Sono-Photoacoustic Activation of Phase-Change Contrast Agents," Photoacoustics, vol. 20, 100202, Dec. 2020.

12.  M. Kim, G.-S. Jeng, I. Pelivanov, and M. O'Donnell,” Deep-Learning Image Reconstruction for Real-Time Photoacoustic System,” IEEE Trans. Med. Imag. vol. 39, pp. 3379-3390, Nov. 2020. 10.1109/TMI.2020.2993835 

13. M. Kim, G.-S. Jeng, I. Pelivanov, and M. O'Donnell,” Correction of Wavelength-Dependent Laser Fluence in Swept-Beam Spectroscopic Photoacoustic Imaging with a Hand-Held Probe,” Photoacoustics, vol. 19, 100192, Sep. 2020. 10.1016/j.pacs.2020.100192 

14. Y.-T Lee, D. S. Li, J. Ilavsky, I. Kuzmenko, G.-S. Jeng, M. O'Donnell, and L. D. Pozzo, “Ultrasound-Based Formation of Nano-Pickering Emulsions Investigated via in-situ SAXS,” Journal of Colloid and Interface Science, vol. 536, pp. 281-290, 2019.

15. N. Parajuli, A. Lu, K. Ta, J. Stendahl, N. Boutagy, I. Alkhalil, M. Eberle, G.-S. Jeng, M. Zontak, M. O’Donnell, A. J. Sinusas, “Flow Network Tracking for Spatiotemporal and Periodic Point Matching: Applied to Cardiac Motion Analysis,” Medical Image Analysis, vol. 55, pp. 116-135, Jul. 2019.

16. G.-S. Jeng, M. Zontak, N.  Parajuli, A. Lu, K. Ta, A. J. Sinusas, J. S. Duncan, and M. O’Donnell, “Efficient Two-Pass 3-D Speckle Tracking for Ultrasound Imaging,” IEEE Access, vol. 6, pp. 17415-17428, Mar. 2018.

17. C. C. Shen, Y. Q. Xing, and G. Jeng, “Autocorrelation-Based Generalized Coherence Factor for Low-Complexity Adaptive Beamforming,” Ultrasonics, vol. 72, pp. 177-183, 2016.

18. E. Merčep, G. Jeng, S. Morscher, P.-C. Li, and D. Razansky, “Hybrid Optoacoustic Tomography and Pulse-Echo Ultrasonography Using Concave Arrays,” IEEE Trans. on Ultrasonics, Ferroelectrics and Frequency Control, vol. 62, no. 9, pp. 1651-1661, Sep. 2015.

19. J.-H. Liu, G.-S. Jeng, T.-K. Wu, and P.-C. Li, “ECG Gating and Triggering Technologies for Ultrasonic Small Animal Imaging,” IEEE Trans. on Ultrasonics, Ferroelectrics and Frequency Control, vol. 53, no. 9, pp. 1590-1596, Sep. 2006.

20. G.-S. Jeng and P.-C. Li, “Vector-Velocity Estimation in Swept-Scan Using a k-Space Approach,” IEEE Trans. on Ultrasonics, Ferroelectrics and Frequency Control, vol. 53, no. 5, pp. 947-958, May 2006.

21. G.-S. Jeng and P.-C. Li, “Effects of Swept Scanning on Velocity Estimation,” Ultrasonic Imaging, vol. 27, no.1, pp.1-20, Jan. 2005.

Conference paper

1.      C.-Y. Lu, M.-Y. Hsieh, G.-S. Jeng, “Hybrid 3-D Ultrasound Strain Imaging with Speckle Tracking and Deep Learning Optical Flow,” 2025 IEEE International Ultrasonics Symposium (IUS), Utrecht, Netherlands, Sept. 15-18 Sep. 2025. (Presentation only) (Travel grant)

2.    T.-H. Chien, K.-L. Fong, B.-C. Shih, J.-Z. Li, G.-S. Jeng, “Ultrasound-Lidar Hybrid Slam for Robust Navigation in Transparent Indoor Environments,” 2025 IEEE International Ultrasonics Symposium (IUS), Utrecht, Netherlands, Sept. 15-18, 2025. (Presentation only) (Travel grant)

3.      C.-Y. Lu, H.-C. Cheng, G.-S. Jeng, “RAFT-VFI: Fully Learned Ultrasound Ultrafast Vector Flow Imaging,” 2025 IEEE International Ultrasonics Symposium (IUS), Utrecht, Netherlands, Sept. 15-18, 2025. (Presentation only)   

4.      P.-H. Tung, G.-S. Jeng, B.-C. Lai, and Y.-X. Hung, “Automated Optimization for FPGA-Based Sonar Object Recognition Systems,” in Proc. IEEE Asia Pacific Conf. Circuits Syst. (APCCAS), Nov. 2024, pp. 349–353.

5.      S.-K. Lu, C.-Y. Lu, G.-S. Jeng, “Wall and Flow Tracking for Simultaneous Blood Pressure and Volume Flow Rate Measurement,” 2024 IEEE UFFC-JS, Taipei, Taiwan, Sept. 22-26, 2024. (Presentation only)

6.      Y.-F. Chiang and G.-S. Jeng, “Optimizing Sound Quality with a Compact Linear-Amplifier-Based Parametric Speaker: Harmonics Reduction and Bass Enhancement,” 2024 IEEE UFFC-JS, Taipei, Taiwan, Sept. 22-26, 2024. (Presentation only) (Travel grant)

7.      C.-Y. Chen, T.-H. Sang, and G.-S. Jeng, “Deep-Learning Imaging Enhancement of Amplitude Steered Array Beamforming,” 2024 IEEE UFFC-JS, Taipei, Taiwan, Sept. 22-26, 2024. (Presentation only) (Travel grant)

8.      G.-S. Jeng, P.-S. Chen, J.-Z. Li, B.-C. Shih, and W.-C. Tian, “Real-Time Edge Computing Empowered Airborne Ultrasound Imaging System with Cost-Effective Single Chip Integration,” 2024 IEEE UFFC-JS, Taipei, Taiwan, Sept. 22-26, 2024. (Presentation only)

9.      C.-W. Liao, Y.-T. Liu, and G.-S. Jeng, “Direct Ultrasound Cardiac Strain Imaging via Optical Flow Deep Learning,” 2024 IEEE UFFC-JS, Taipei, Taiwan, Sept. 22-26, 2024. (Presentation only)

10.   G.-S. Jeng, S. Chen, and L.-T. Hsieh, “Contactless Respiratory Waveform Estimation Using Acoustic Planar Array,” 2023 IEEE International Ultrasonics Symposium (IUS), Montreal, Canada, Sept. 3-8, 2023. (Presentation only)

11.   P.-S Chen, M.-Y. Hsieh, M. de Villiers, and G.-S. Jeng, “Coordinate-Independent Myocardial Strain Imaging Using 3D Ultrasound Principal Stretch and Axis Estimation,” 2023 IEEE International Ultrasonics Symposium (IUS), Montreal, Canada, Sept. 3-8, 2023. (Presentation only)

12.   L.-F. Lee, P.-S Chen, and G.-S. Jeng, “Enhancing 3D Speckle Tracking with High-Speed Phase-Sensitive Randomized Search,” 2023 IEEE International Ultrasonics Symposium (IUS), Montreal, Canada, Sept. 3-8, 2023. (Presentation only)

13.   G.-S. Jeng, M.-H. Lin, and P.-S. Chen, “Vector Flow Imaging Using Speckle-tracking-based Correlation-weighted Least Squares,” 2022 IEEE International Ultrasonics Symposium (IUS), Venice, Italy, Oct. 10-13, 2022. (Presentation only)

14.   G.-S. Jeng, C.-L. Yeh, L.-Y. Tseng, and P.-C. Li, “Imaging Optimization on Ultrasound Shear Wave Computed Tomography,” 2022 IEEE International Ultrasonics Symposium (IUS), Venice, Italy, Oct. 10-13, 2022. (Presentation only)

15.   M. O’Donnell, G.-S. Jeng, M. Kim, S.-J. Yoon, J. J. Pitre Jr., D.-S. Li, M. A. Kirby, H.-C. Liou, T.-T. Shen, R. Wang, and I. Pelivanov, “2PL Light and Sound: Integrating Photonics with Ultrasonics,” in Proc. Symp. Ultrasonic Electron. (SUE), vol. 42, p. 2PL, Oct. 2021.

16.   Z. A. Coutant, O. Adelegan, A. O. Biliroglu, G.-S. Jeng, et al.,”Wideband Air-Coupled CMUT Arrays for Acoustic Micro-Tapping,” 2020 IEEE International Ultrasonics Symposium, Las Vegas, USA, Sept. 6-11, pp. 1-3, 2020.

17.   G.-S. Jeng et al, “Real-Time, Swept-Beam Spectroscopic Photoacoustic/Ultrasound Imaging -Pre-Clinical System,” 2019 IEEE International Ultrasonics Symposium, Glasgow, Scotland, Oct. 6-9, 2019. (Oral Presentation)

18.   D. S. Li, J. J. Pitre, G.-S. Jeng, I. Pelivanov, T. Matula, M. O’Donnell, and L. D. Pozzo, “Sono-Photoacoustic Activation of Polypyrrole Coated Nanodroplets for Thrombolysis,” 2019 IEEE International Ultrasonics Symposium, Glasgow, Scotland, Oct. 6-9, 2019. (Oral Presentation)

19.   C.-Y. Chien, G.-S. Jeng, D. S. Li, and M. O’Donnell “Parameters Affecting the Accuracy of Pulse Wave Velocity Estimates: A Comprehensive Comparison between Different Imaging Methods,” 2019 IEEE International Ultrasonics Symposium, Glasgow, Scotland, Oct. 6-9, 2019. (Poster Presentation)

20.   M. Kim, G.-S. Jeng, I. Pelivanov, and M. O'Donnell, “Deep Learning Image Reconstruction for Real-Time Photoacoustic System,” 2019 IEEE International Ultrasonics Symposium, Glasgow, Scotland, Oct. 6-9, 2019. (Poster Presentation)

21.   G.-S. Jeng et al, “Real-Time, Swept-Beam Compact Photoacoustic/Ultrasound Imaging System,”　SPIE Photonics West BIOS 2019, California, Feb. 2-7, 2019. (Oral Presentation)

22.   G.-S. Jeng et al, “3-D Speckle Tracking with Two-Pass Searching and Phase-Rotated Correlation Filtering,”　2018 IEEE International Ultrasonics Symposium, Kobe, Japan, Oct. 22-25, 2018. (Oral Presentation)

23.   C.-C. Shen, H.-C. Yang, G. Jeng, “Sound speed optimization for ultrasound beamforming using differential phase gradient between sub-apertures,” 2016 IEEE International Ultrasonics Symposium, Tours, France, Sept. 18-21, pp.1-4, 2016.

24.   C.-C. Shen, J.-G. Yul, G. Jeng, “Implementation and evaluation of slow-time Golay decoding for pre-clinical high-frequency color Doppler imaging in mice,”　2015 IEEE International Ultrasonics Symposium, Taipei, Taiwan, Oct. 21-24, pp.1-4, 2015.

25.   Y.-Q. Xing, S.-H. Jiang, G. Jeng, C.-C. Shen,” Low-complexity adaptive beamforming using autocorrelation-based generalized coherence factor,” 2015 IEEE International Ultrasonics Symposium, Taipei, Taiwan, Oct. 21-24, pp.1-4, 2015.

26.   C.-L. Hu, G.-S. Jeng, Y.-H. Wang, P.-C. Li, M.-L. Li, “Improved plane-wave high frame rate imaging using retrospective transmit focusing and filter-derived coherence-index weighting,” 2010 IEEE International Ultrasonics Symposium, San Diego, California, 2010, pp. 1916-1919.

27.   G.-S. Jeng and P.-C. Li, “Error Analysis of Autocorrelation-Based Velocity Vector in the Aperture Domain,” in Proc. IEEE Ultrason. Symp., 2007, pp. 2421-2424.

28.    G.-S. Jeng and P.-C. Li, “Vector velocity estimation in swept-scan mode using a K-space approach,” Proc. of SPIE, Medical Imaging 2005, vol. 5750, pp. 468–477, 2005. (Cum Laude award)

29.   J.-H.  Liu, G.-S. Jeng, T.-K. Wu, and P.-C. Li, “ECG Gated Ultrasonic Small Animal Imaging,” 27th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBS), pp. 1762-1765, 2005.

30.   G.-S. Jeng and S.-W. Huang, “SNR-Dependent Filter Design for Improving Depth of Field Using Modified Least Squares,” in Proc. IEEE Ultrason. Symp., 2003, pp. 1235–1238.

31.   G.-S. Jeng, S.-W. Huang, P.-C. Li, and J. Tsao, “A Novel Pulse Compression Technique Using Inverse Filtering in Frequency Domain,” in Proc. IEEE Ultrason. Symp., 2001, pp. 1535–1538.

Patent

1.  C. Wiest, D. Razansky, E. Nasonova, P.-C. Li, G.-S Jeng, “Device and Method for Hybrid Optoacoustic Tomography and Ultrasonography,” U.S. Patent No. 10881299, Jan. 5, 2021.

2.  H.-M. Cheng, J.-J. Wang, G.-S. Jeng, S.-Y. Chuang, “Method and System for Estimating Energetic Hemodynamic Parameters and Computer Readable Medium,” Taiwan Patent No. I901428, Oct. 2025.