The University of Southampton
Email:
x.cai@soton.ac.uk

Dr Xiaohao Cai 

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Xiaohao Cai is a Lecturer (Assistant Professor equivalent) in the School of Electronics and Computer Science at the University of Southampton. He received his PhD degree in mathematics from The Chinese University of Hong Kong in 2012. He afterwards was a Postdoctoral Researcher at the Department of Mathematics of the Technische Universitat Kaiserslautern in Germany. After that he was a Wellcome Trust Research Fellow and Issac Newton Trust Research Fellow, affiliated with the Department of Plant Sciences, and Department of Applied Mathematics and Theoretical Physics at the University of Cambridge. Thenceforth, before joining Southampton, he was a Research Fellow in the Mullard Space Science Laboratory (MSSL) at University College London (UCL).

He has broad multi-disciplinary research interests in applied mathematics, statistics, and computer science, with main focus and applications in image/signal/data processing, optimisation, machine learning and computer vision.

He is happy to consider PhD applications, etc.; more details click here.

Teaching

Computer Vision, Image Processing, Artificial Intelligence

Publications

Cai, Xiaohao, Chan, Raymond H., Morigi, Serena and Sgallari, Fiorella (2012) Framelet-based algorithm for segmentation of tubular structures. In, Bruckstein, Alfred M., Haar Romeny, Bart M. ter, Bronstein, Alexander M. and Bronstein, Michael M. (eds.) Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), , (doi:10.1007/978-3-642-24785-9_35), 6667 LNCS) Third International Conference: Scale Space and Variational Methods in Computer Vision (29/05/11 - 02/06/11) SpringerLink, pp. 411-422. (doi:10.1007/978-3-642-24785-9_35).

Cai, Xiaohao and Steidl, Gabriele (2013) Multiclass segmentation by iterated ROF thresholding. In, Heyden, Anders, Kahl, Fredrik, Olsson, Carl, Oskarsson, Magnus and Tai, Xue-Cheng (eds.) Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), , (doi:10.1007/978-3-642-40395-8_18), 8081) Energy Minimization Methods in Computer Vision and Pattern Recognition: 9th International Conference (19/08/13 - 21/08/13) SpringerLink, pp. 237-250. (doi:10.1007/978-3-642-40395-8_18).

Cai, Xiaohao, Chan, Raymond and Zeng, Tieyong (2013) A two-stage image segmentation method using a convex variant of the Mumford-Shah model and thresholding. SIAM Journal on Imaging Sciences, 6 (1), 368-390. (doi:10.1137/120867068).

Cai, Xiaohao, Chan, Raymond, Morigi, Serena and Sgallari, Fiorella (2013) Vessel segmentation in medical imaging using a tight-frame-based algorithm. SIAM Journal on Imaging Sciences, 6 (1), 464-486. (doi:10.1137/110843472).

Cai, Xiaohao, Fitschen, Jan Henrik, Nikolova, Mila, Steidl, Gabriele and Storath, Martin (2014) Disparity and optical flow partitioning using extended Potts priors. Information and Inference: A Journal of the IMA, 4 (1), 43-62. (doi:10.1093/imaiai/iau010).

Lee, Juheon, Cai, Xiaohao, Schonlieb, Carola Bibiane and Coomes, David (2015) Mapping individual trees from airborne multi-sensor imagery. In, 2015 International Geoscience and Remote Sensing Symposium (IGARSS). IEEE, pp. 5411-5414. (doi:10.1109/IGARSS.2015.7327059).

Cai, Xiaohao, Pereyra, Marcelo and McEwen, Jason D. (2019) Quantifying uncertainty in high dimensional inverse problems by convex optimisation. In, 2019 27th European Signal Processing Conference (EUSIPCO). (European Signal Processing Conference, , (doi:10.23919/EUSIPCO.2019.8903038), 2019-September) IEEE. (doi:10.23919/EUSIPCO.2019.8903038).

Scaife, Jessica Elizabeth, Harrison, Karl, Drew, Amelia, Cai, Xiaohao, Lee, Juheon, Schonlieb, Carola-Bibiane, Sutcliffe, Michael, Parker, M. Andy, Freeman, Sue, Romanchikova, Marina, Thomas, Simon, Jena, Raj, Bates, Amy and Burnet, Neil (2015) Accuracy of manual and automated rectal contours using helical tomotherapy image guidance scans during prostate radiotherapy. Journal of Clinical Oncology, 33 (7_suppl), 94-94. (doi:10.1200/jco.2015.33.7_suppl.94).

Cai, Xiaohao (2015) Variational image segmentation model coupled with image restoration achievements. Pattern Recognition, 48 (6), 2029-2042. (doi:10.1016/j.patcog.2015.01.008).

Cai, Xiaohao, Schönlieb, Carola Bibiane, Lee, Juheon, Scaife, J., Harrison, Karl, Sutcliffe, Michael, Parker, M. Andy and Burnet, Neil G. (2016) Automatic contouring of soft organs for image-guided prostate radiotherapy. Radiotherapy and Oncology, 119 (Supplement 1), S895-S896. (doi:10.1016/S0167-8140(16)33144-9).

Lee, Juheon, Cai, Xiaohao, Lellmann, Jan, Dalponte, Michele, Malhi, Yadvinder, Butt, Nathalie, Morecroft, Mike, Schonlieb, Carola Bibiane and Coomes, David A. (2016) Individual tree species classification from airborne multisensor imagery using robust PCA. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 9 (6), 2554-2567. (doi:10.1109/JSTARS.2016.2569408).

Cai, Xiaohao, Chan, Raymond, Nikolova, Mila and Zeng, Tieyong (2017) A three-stage approach for segmenting degraded color images: Smoothing, Lifting and Thresholding (SLaT). SIAM Journal on Scientific Computing, 72 (3), 1313-1332. (doi:10.1007/s10915-017-0402-2).

Lee, Juheon, Coomes, David, Schonlieb, Carola-Bibiane, Cai, Xiaohao, Lellmann, Jan, Dalponte, Michele, Malhi, Yadvinder, Butt, Nathalie and Morecroft, Mike (2017) A graph cut approach to 3D tree delineation, using integrated airborne LiDAR and hyperspectral imagery. arXiv.

Burnet, Neil G., Scaife, Jessica E., Romanchikova, Marina, Thomas, Simon J., Bates, Amy, Wong, Emma, Noble, David J., Shelley, Leila, Bond, Simon, Forman, Julia, Hoole, Andrew, Barnett, Gillian, Brochu, Frederic, Simmons, Michael, Jena, Raj, Harrison, Karl, Yeap, Ping Lin, Drew, Amelia, Silvester, Emma, Elwood, Patrick, Pullen, Hannah, Sultana, Andrew, Seah, Shannon, Wilson, Megan, Russell, Simon, Benson, Richard, Rimmer, Yvonne, Jefferies, Sarah, Taku, Nicolette, Gurnell, Mark, Powlson, Andrew, Schönlieb, Carola-Bibiane, Cai, Xiaohao, Sutcliffe, Michael and Parker, Michael (2017) Applying physical science techniques and CERN technology to an unsolved problem in radiation treatment for cancer: the multidisciplinary 'VoxTox' research programme. CERN IdeaSquare Journal of Experimental Innovation, 1 (1), 3-12. (doi:10.23726/cij.2017.457).

Bauer, Benjamin, Cai, Xiaohao, Peth, Stephan, Schladitz, Katja and Steidl, Gabriele (2017) Variational-based segmentation of bio-pores in tomographic images. Computers and Geosciences, 98, 1-8. (doi:10.1016/j.cageo.2016.09.013).

Price, Matthew A., McEwen, Jason D., Cai, Xiaohao, Kitching, Thomas D. and Wallis, Christopher G.R. (2018) Sparse Bayesian mass-mapping with uncertainties: hypothesis testing of structure. arXiv.

Cai, Xiaohao, Chan, Raymond, Nikolova, Mila and Zeng, Tieyong (2018) The synergy between different colour spaces for degraded colour images segmentation. Science Trends. (doi:10.31988/scitrends.10714).

Cai, Xiaohao, Pereyra, Marcelo and McEwen, Jason D. (2018) Uncertainty quantification for radio interferometric imaging - I. Proximal MCMC methods. Monthly Notices of the Royal Astronomical Society, 480 (3), 4154-4169. (doi:10.1093/MNRAS/STY2004).

Cai, Xiaohao, Pereyra, Marcelo and McEwen, Jason D. (2018) Uncertainty quantification for radio interferometric imaging: II. MAP estimation. Monthly Notices of the Royal Astronomical Society, 480 (3), 4170-4182. (doi:10.1093/MNRAS/STY2015).

Cai, Xiaohao, Chan, Raymond, Xie, Xiaoyu and Zeng, Tieyong (2019) A two-stage classification method for high-dimensional data and point clouds. arXiv.

Pratley, Luke, McEwen, Jason D., d'Avezac, Mayeul, Cai, Xiaohao, Perez-Suarez, David, Christidi, Ilektra and Guichard, Roland (2019) Distributed and parallel sparse convex optimization for radio interferometry with PURIFY. arXiv.

Mai, Keith Ka Ki, Yeung, Wai Tsun, Han, Sang Yun, Cai, Xiaohao, Hwang, Inhwan and Kang, Byung Ho (2019) Electron tomography analysis of thylakoid assembly and fission in chloroplasts of a single-cell C4 plant, Bienertia sinuspersici. Scientific Reports, 9 (1), [19640]. (doi:10.1038/s41598-019-56083-w).

Cai, Xiaohao, Chan, Raymond, Schönlieb, Carola Bibiane, Steidl, Gabriele and Zeng, Tieyong (2019) Linkage between piecewise constant Mumford-Shah model and Rudin-Osher-Fatemi model and its virtue in image segmentation. SIAM Journal on Scientific Computing, 41 (6), B1310-B1340. (doi:10.1137/18M1202980).

Cai, Xiaohao, Pratley, Luke and McEwen, Jason D. (2019) Online radio interferometric imaging: Assimilating and discarding visibilities on arrival. Monthly Notices of the Royal Astronomical Society, 485 (4), 4559-4572. (doi:10.1093/mnras/stz704).

Price, Matthew A., McEwen, Jason D., Cai, Xiaohao and Kitching, Thomas D. (2019) Sparse Bayesian mass mapping with uncertainties: peak statistics and feature locations. Monthly Notices of the Royal Astronomical Society, 489 (3), 3236-3250. (doi:10.1093/mnras/stz2373).

Price, Matthew A., Cai, Xiaohao, McEwen, Jason D., Pereyra, Marcelo and Kitching, Thomas D. (2020) Sparse Bayesian mass mapping with uncertainties: local credible intervals. Monthly Notices of the Royal Astronomical Society, 492 (1), 394-404. (doi:10.1093/mnras/stz3453).

Williams, Jonathan, Schonlieb, Carola Bibiane, Swinfield, Tom, Lee, Juheon, Cai, Xiaohao, Qie, Lan and Coomes, David A. (2020) 3D segmentation of trees through a flexible multiclass graph cut algorithm. IEEE Transactions on Geoscience and Remote Sensing, 58 (2), 754-776. (doi:10.1109/TGRS.2019.2940146).

Lee, Juheon, Cai, Xiaohao, Schönlieb, Carola Bibiane and Coomes, David A. (2015) Nonparametric image registration of airborne LiDAR, hyperspectral and photographic imagery of wooded landscapes. IEEE Transactions on Geoscience and Remote Sensing, 53 (11), 6073-6084. (doi:10.1109/TGRS.2015.2431692).

Cai, Xiaohao, Wallis, Christopher G.R., Chan, Jennifer Y.H. and McEwen, Jason D. (2020) Wavelet-based segmentation on the sphere. Pattern Recognition, 100, 1-15, [107081]. (doi:10.1016/j.patcog.2019.107081).

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