YiChang Shih

Senior Staff Software Engineer, TLM


yichangshih at csail dot mit dot edu

Curriculum Vitae            | Google Scholar | LinkedIn


I currently lead a small team at Google Pixel Camera Algorithm team to improve mobile camera imaging quality through Computational Photography, Computer Vision, and On-device Machine Learning techniques. We develop end-to-end solutions across engineering and research boundary.


** We are hiring!** If you are interested in computational photography, please send me an email. New grads are welcome.

Short Bio

I received my Ph.D. from MIT CSAIL in 2015, advised by Frédo Durand and Bill Freeman on Computational Photography, Computer Vision, and Computer Graphics. My PhD research was about  data-driven graphics. By leveraging repetitive visual-information and high quality examplars, my thesis explores advanced image editing algorithms. I've worked on hardware devices for imaging and enhancement during my master in MIT. Before Google, I was a Research Scientist at LightCo, where we launched the very first (and super cool) L16 camera (Verge).  

Luckily, I had great intern opportunities to work with Jon Barron and Marc Levoy (Google[x], 2014), Sylvain Paris and Connelly Barnes (Adobe Research , 2013), Vivek Kwatra and Troy Chinen (Google Research , 2012) Neel Joshi and Brian Guenter. (Microsoft Research, 2011). I am always happy to work with talented interns. Please contact me if you are interested in doing an internship with me. I have been lucky to work with the following interns so far:

  • Kai-En Lin: from UCSD, on Object NeRF (2021)

  • Chen Gao: from Virginia Tech, on Portrait NeRF (2020)

  • Zixun Yu: from Purdue, on portrait image enhancement (2019)

  • Wei-Shang Lai: from UC Merced, on wide-angle portrait distortion correction (2018)


Face Deblurring using Dual Camera Fusion on Mobile Phones


Wei-Sheng Lai, YiChang Shih, Lun-Cheng Chu, Xiaotong Wu, Sung-Fang Tsai, Michael Krainin, Deqing Sun, and Chia-Kai Liang

ACM Transactions on Graphics (SIGGRAPH) 2022


Correcting Face Distortion in Wide-Angle Videos

[webpage] [pdf] [video]


Wei-Sheng Lai, YiChang Shih, Chia-Kai Liang, and Ming-Hsuan Yang


Portrait Neural Radiance Fields from a Single Image


Chen Gao, YiChang Shih, Wei-Sheng Lai, Chia-Kai Liang, and Jia-Bin Huang

arXiv:2012.05903, 2021


Distortion-Free Wide-Angle Portraits on Camera Phones 

[project_web] [pdf]

YiChang Shih, Wei-Sheng Lai, Chia-Kai Liang

ACM Transactions on Graphics (SIGGRAPH) 2019


Transform Recipes for Efficient Cloud Photo Enhancement

[project_web] [pdf]

Michaël Gharbi, YiChang Shih, Gaurav Chaurasia, Jonathan Ragan-Kelley, Sylvain Paris, and Frédo Durand

ACM Transactions on Graphics (SIGGRAPH Asia) 2015


PhD Thesis: Data-Driven Photographic Style Using Local Transfer

[thesis pdf][defense presentation (pdf)][pptx (171MB)]

YiChang Shih

March 2015, MIT CSAIL, Cambridge, MA


Fast Bilateral-Space Stereo for Synthetic Defocus 

[pdf] [supp]

Jon Barron, Andrew Adams, YiChang Shih, and Carlos Hernandez

IEEE Conference on Computer Vision and Pattern Recognition (CVPR) 2015 (Oral)


Reflection Removal using Ghosting Cues 


YiChang Shih, Dilip Krishnan, Frédo Durand, William T. Freeman

IEEE Conference on Computer Vision and Pattern Recognition (CVPR) 2015

[The Economist]

Style Transfer for Headshot Portraits



YiChang Shih, Sylvain Paris, Connelly Barnes, William T. Freeman, Frédo Durand

ACM Transactions on Graphics (SIGGRAPH) 2014


Seeing the Arrow of Time

[project web] [pdf]

L. Pickup, Z. Pan, D. Wei, Y. Shih, W. Freeman, A. Zisserman and B. Schölkopf

IEEE Conference on Computer Vision and Pattern Recognition (CVPR) 2014

Joint Noise Level Estimation from Personal Photo Collections

[project web][pdf]


YiChang Shih, Vivek Kwatra, Troy Chinen, Hui Fang, Sergey Ioffe

IEEE International Conference on Computer Vision (ICCV) 2013

Data-driven Hallucination of Different Times of Day from a Single Outdoor Photo

[project web][pdf]

YiChang Shih, Sylvain Paris, Frédo Durand, William T. Freeman

ACM Transactions on Graphics (SIGGRAPH Asia) 2013

Image Enhancement using Calibrated Lens Simulations

[project web] [pdf]


YiChang Shih, Brian Guenter, Neel Joshi

European Conference on Computer Vision (ECCV) 2012

Laser Speckle Photography for Surface Tampering Detection

[project web] [pdf]

YiChang Shih, Abe Davis, Samuel W. Hasinoff, Frédo Durand, William T. Freeman

IEEE Conference on Computer Vision and Pattern Recognition (CVPR) 2012

YiChang Shih, Master thesis, 2012 [pdf]

Light Field Analysis for Modeling Image Formation 


Chia-Kai Liang, YiChang Shih, Homer H. Chen

IEEE Trans. Image Processing. Vol. 20, No.2 pp. 446-460, 2011.

Course Projects


Bars Removal by Multiview Images 


Course: 6.865 Computational Photography (2011)

with HsinJung Yang


Handwritten Sanskrit Recognition using a Multi-class SVM with K-NN Guidance 


Course: 6.867 Machine Learning (2011)

with Donglai Wei

Teaching Assistant


6.815/6.865 - Digital & Computational Photo (2013)



Lecturer: Frédo Durand

Vision Transformer for NeRF-Based View Synthesis from a Single Input Image


Kai-En Lin, Yen-Chen Lin, Wei-Sheng Lai, Tsung-Yi Lin, YiChang Shih, and Ravi Ramamoorthi

arXiv:2207.05736, 2022