About Me
I am currently a postdoctoral fellow in The Smith Kettlewell Eye Research Institute, San Francisco. My adviser is Dr. Alex Wade. I recently received my PHD from Department of Neuroscience, University of Pennsylvania, Philadelphia. My thesis advisor was professor David Brainard. Before that, I was a graduate student at the Department of Chemistry, University of Pennsylvania. I did my undergraduate studies in Tsinghua University, Beijing, China, where I majored in Physical Chemistry. My undergraduate thesis advisor was professor Zhiwu Yu.
Research Interests
In my graduate work, I mostly studied color perception of three-dimensional objects in complex scenes using psychophysical methods. I conducted quite a few experiments measuring how color appearance of objects is related to its shape, its surface material properties, the lighting conditions, the scene geometry and surrounding objects. I am also interested in formulating computational models that relate the image and scene parameters to human performance. I hope this will also provide insights for machine vision algorithms.
My postdoctoral research has focused on measuring spatial-temporal dynamics of color signals in early visual system using source-imaging EEG and psychophysical methods. I am particularly interested in 1) how color signals, especially the S-cone (short-wave sensitive cone) signals interact with luminance signals and 2) when and where the signals from different type of cones are combined in the cortex and also 3) how the neural responses at different sites in the cortex relate to perceptual responses.
Publications
Articles
Xiao, B. & Brainard, D. H. (2008). Surface gloss and color
perception of 3D objects. Visual Neuroscience, 25, 371-385.
doi:10.10170/S0952523808080267. Download PDF. Supplemental Material.
Xiao, B. and Brainard D. H. (2006). Color perception of 3D objects: constancy with respect to variation of surface gloss. Proceedings of ACM Symposium on Applied Perception in Graphics and Visualization (APGV06), July 28-29, 2006, Boston, MA, 63-68. See publication 85 for archival version. Download PDF.
Brainard, D. H., Longere, P., Delahunt, P. B., Freeman, W. T., Kraft, J. M., and Xiao, B. (2006). Bayesian model of human color constancy. Journal of Vision, 6, 1267-1281, http://journalofvision.org/6/11/10/, doi:10.1167/6.11.10.
PHD Thesis
B. Xiao (2009). Color perception and constancy of objects in 3D complex scenes. Ph.D. Thesis, Neuroscience Graduate Program, University of Pennsylvania.
Selected Abstracts
Xiao, B., Wade, A.R. (2009). Surround Suppression between S-cone
and luminance channels measured with psychophysical and source-imaging
EEG. OSA Fall Vision Meeting 2009, Seattle, WA.
Xiao, B., & Brainard, D. (2009). Surface material properties and color constancy of 3D objects [Abstract]. Journal of Vision, 9(8):359, 359a, http://journalofvision.org/9/8/359/,doi:10.1167/9.8.359.
Xiao, B., Kanyuk, P. J., & Brainard, D. H. (2005). Color appearance and the material properties of three-dimensional objects [Abstract]. Journal of Vision, 5(8):782, 782a, http://www.journalofvision.org/5/8/782/
Contact
2318 Fillmore Street
The Smith-Kettlewell Eye Research Institute
San Francisco, CA 94115
Email: xiao@ski.org