NameYu-Chi Lai
DepartmentComputer Science and Information Engineering
Research Interest

Computer Graphics, Computer Games and Computer Vision

Curriculum Vitae

Yu-Chi Lai received the B.S. from National Taiwan University, Taipei, R.O.C., in 1996 in Electrical Engineering Department. He received his M.S. and Ph.D. degrees from University of Wisconsin—Madison in 2003 and 2009 respectively in Electrical and Computer Engineering and his M.S. and Ph.D. degrees in 2004 and 2010 respectively in Computer Science.

He is currently an associate professor in NTUST.



  • Lai, Y.-C., Chen, B.-A., Chen, K.-W., Si, W.-L., Yao, C.-Y., and  Zhang, E., "Data-Driven NPR Illustrations of Natural Flows in Chinese Painting", IEEE Trans Vis Comput Graph 2017, Volume 21, Issue 12, PP 2535 - 2549, 2017, DOI: 10.1109/TVCG.2016.2622269.
  • Supplemental material


  • Li, C.-C., Lai, Y.-C., Syu, N.-S., Kuo, H.-N., Todorov, D., and Yao, C.-Y., “EZCam: WYSWYG Camera Manipulator for Path Design.”IEEE Transaction on Circuits and Systems on Video Technology, Volume 27, Issue 8, PP. 1632-1646, DOI 10.1109/TCSVT.2016.2543018, 2017
  • Submitted material web page
  • Wang, H.-C., Lai, Y.-C., Cheng, W.-H., Cheng, C.-Y., and Hua, K.-L., “Background Extraction Based on Joint Gaussian Conditional Random Fields.”IEEE Transaction on Circuits and Systems on Video Technology, accepted, 2017
  • Supplemental material
  • Yao, C.-Y., Hung, S.-H., Li, G.-W., Chen, I-Y., Adhitya R., and Lai, Y.-C., “Manga Vectorization and Manipulation with Procedural Simple Screentone.”IEEE Transaction on Computer Graphics and Visualization,  Volume: 23, Issue: 2, Pages 1070 - 1084, DOI 10.1109/TVCG.2016.2525774, 2017
  • Syu, N.-S., Kuo, J.-W., Yao, C.-Y., Shen, S.-H., and Lai, Y.-C., "Instant messaging with emotion-embedded vectorized handwritings on mobile devices", EURASIP Journal on Image and Video Processing20172017:23
  • Yao, C.-Y., Chen, K.-Y., Kuo, H.-N., Li, J.-C., and Lai, Y.-C., “Resolution Independent Real-Time Vector Embedded Mesh for Animation”IEEE Transaction on Circuits and Systems on Video Technology, Volume 27, Issue 9, PP 1974-1986, 2017
  • Submitted material web page

Hua, K.-L., Wang, H.-C., Yeh, C.-X., Cheng, W.-H., and Lai, Y.-C. Lai, "Background Extraction Using Random Walk Image Fusion.", IEEE Transactions on Cybernetics, Volume: 99 PPIssue: 99, Pages: 1 - 13DOI: 10.1109/TCYB.2016.2640288, 2016

  • Guan, S.-H., Lai, Y.-C., Chen, K.-W., Chou, H.-T., and Chuang, Y.-Y., “A tool for stereoscopic parameter setting based on geometric perceived depth percentage.”, IEEE Transaction on Circuits and Systems on Video Technology,  Vol. 26, Issue 2, PP 290-303, DOI 10.1109/TCSVT.2015.2407774, 2016
  • Submitted material web page
  • Lai, Y.-C., Wang, C.-W., Todorov, D., and Yao, C.-Y. "Extra Detail Addition Based on Existing Texture For Animation News Production", Multimedia Tools and Applications Volume 75, Issue 24pp 16861–16880, 2016
  • Supplemental web page.
  • Ho, H.-Y., Yeh, I.-C., Lai, Y.-C., Lin, W.-C., and Cherng, F.-Y., "Evaluating 2D Flow Visualization Using Eye Tracking," , Computer Graphics Forum, Vol.34, No.3. June, 2015 (Accepted by EuroVis 2015) 

Yu-Chi Lai, Chun-Wei Wang, Dobromir Todorov, Chih-Yuan Yao, Extra Detail Addition Based on Existing Texture For Animation News Production, National Computer Symposium 2013.

Supplement material Videos PDF Detail
  • Lai, Y.-C., Chou, H.-T., Chen, K.-W.,and Fan, S., Robust and Efficient Adaptive Direct Lighting Estimation, the visual computer, Vol. 31, No. 1, PP 83-91
  • Submitted material web page
  • Chang, S.-H., Lai, Y.-C., Yao, C.-Y., Hua, K.-L., Niu, Y., and Liu, F., Geometry-shader-based real-time voxelization and applications, the visual computer, volume 30, Number 3, PP. 327-340, 2014
  • Submitted matieral web page
PDF Detail

Kuang-Yi Chen, Yu-Chi Lai, Ping-Yu Chang,Seng-Rong Song,

An Analysis of GPU-accelerated Algorithms for Visualizing Geological Data with Various Spatial Scales: Case Studies from Field Measurements in Taiwan, Springer2013 SUBMITTED

G.-M. Su, Y.-C. Lai, A. Kwasinski, and H. Wang. 3D Visual communications. Wiley, 2012. 

Dini Nuzulia Rahmah, Kai-Lung Hua, Yu-Chi Lai, and Chih-Yuan Yao. "Photo Magician: Controlling Point of Focus and Depth of Field on an All-focused Image," In Proceedings of the 17th IEEE International Symposium on Consumer Electronics (ISCE), Hsinchu, Taiwan, Jun. 3 - 6, 2013. (Best Paper Award)

  • Liao, P.-C., Li, C.‐C., Lai, Y.‐C., Chang, P.‐Y., Zhang, H., and Thurber, C.,  “A Graphics Processing Unit Implementation and Optimization for Parallel Double‐Difference Seismic Tomography”, Bulletin of the Seismological Society of America, 2014, 104, 2, 953-961

Adhatus Solichah Ahmadiyah, Guan-Ming Su, Kai-Lung Hua, and Yu-Chi Lai. "An Efficient Anaglyph Stereo Video Compression Pipeline," In Proceedings of the 24th IS&T/SPIE Symposium on Electronic Imaging, Conference on 3D Image Processing and Applications (EI: 3DIP), San Francisco, CA, USA, Feb. 3 - 7, 2013.


Pei-Chang Liao, Yu-Chi Lai, Ping-Yu Chang, Seng-Rong Song, Accelerate Double-Difference Seismic Tomography with GPU Architecture, 2012 AGU Meeting

Long Mai, Hoang Le, Yuzhen Niu, Yu-chi Lai, and Feng Liu. Detecting Rule of Simplicity from Photos. In ACM Multimedia '12: Proceedings of the 20th International Conference on Multimedia, Nara, Japan,

Kuang-Yi Chen, Dobromir Todorov, Chun-Wei Wang, Yu-Chi Lai,


Kuang-Yi Chen, Liang-Shiuan Huang, Pei-Cheng Liao, Yu-Chi Lai, Ping-Yu Chang,

Spatial Data Interpolation and 3D Visualization System


Su, G.-M., Lai, Y.-C., Kwasinski, A., and Wang, H., 3D video communications: Challenges and opportunities, International Journal of Communication System, Volume 24, Number 10, PP. 1261-1281, 2010. 

S.-H. Chang, Yu-Chi Lai, Yuzhen Niu, Feng Liu, and K.-L. Hua, 

Real-time Realistic Voxel-based Rendering,  Pacific Graphics 2011, Short paper


Liang-shiuan Huang, Kaung-Yi Chen, Yu-Chi Lai, Ping-Yu Chang, Seng-Rong Song, Geological Visualization System with GPU-Based Interpolation, 2011 AGU Meeting


Lai, Y.-C., Chenney, S., Liu, F., Niu, Y., and Fan, S."Animation Rendering with Population Monte Carlo Image-plane Sampler." The Visual Computer. Volume 26, Number 6, PP. 543-553, 2010. 


Yu-Chi Lai, Shaohua Fan, Stephen Chenney, Charles Dyer "Photorealistic Image Rendering with Population Monte Carlo Energy Redistribution", Eurographics Symposium on Rendering, 2007, pp. 287–296.


Shaohua Fan, Stephen Chenney, Bo Hu, Kam-Wah Tsui, Yu-chi Lai. "Optimizing Control Variate Estimators for Rendering", Computer Graphics Forum, Vol. 25, No. 3, pp. 351-358, 2006.


Yu-Chi Lai, Stephen Chenney, Shaohua Fan "Group Motion Graphs", Eurographics/SIGGRAPH Symposium on Computer Animation 2005, pp. 281–290.

Shaohua Fan, Stephen Chenney and Yu-Chi Lai, "Metropolis Photon Sampling with Optional User Guidance" , Eurographics Symposium on Rendering, 2005, pp. 127-138.

Research Projects

Yu-Chi Lai, and Chih-Yuan Yao, Global Illumination


Yu-Chi Lai, and Kuang-Yi Chen, Group Motion


Yu-Chi Lai, Kuang-Yi Chen, Pei-Cheng Liao, Liang-Syuan Huang, and 李政其, Geological Data Visualization


Yu-Chi Lai, 3D Image and Video Processing


Yu-Chi Lai, and Chih-Yuan Yao, Human and Computer Interaction


Yu-Chi Lai, and Chih-Yuan Yao, Motion Capture and Camera Manipulaion


Yu-Chi Lai, and Chih-Yuan Yao, Stereoscopic 3D Tools for Animation


Yu-Chi Lai, Kai-Lung Hua, and Wen-Huang Cheng, Background Extraction


Chih-Yuan Yao, and Yu-Chi Lai, Manga Segmentation and Vecteorization


Chih-Yuan Yao, and Yu-Chi Lai, Non-photorealistic Chinese Painting Animation


Chih-Yuan Yao, and Yu-Chi Lai, Vector Graphics and Texturing


2012-10-15:Cooperation between Artists and Engineers
2012-07-13:Taiwan's Representative Industrial Developments in Computer Graphics
2012-07-09:Courses, Results and Possible Cooperation in Games and Animations
2011-06-15:Department of Computer Science and Information Engineering
2011-11-22:Research in Computer Graphics
2011-10-22:Courses In Graphics
2011-09-28:Experience on the Relationship between Programming Projects and Study Results
2011-10-16:Courses and Results in Games and Animations
2011-10-16:Visualize Geological Data with Topology Using Interpolation
2012-05-17:Global Illumination Using CPU and GPU