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Selected Publications
Junchang Ju has research interests in land cover characterization using remote sensing data. He received his Ph.D. degree in 2005 from the Department of Geography and Environment at Boston University. His Ph.D. research work was on a multiscale and multigranular land cover characterization framework which adaptively chooses the size of land cover patches and the categorical resolution of the land cover categories simultaneously in characterizing land cover using Landsat ETM+ data. The framework uses statistical maximum likelihood estimation with added penalty to balance the spatial and categorical complexity of the land cover characterization. He received his Master's degree in plant geography from Beijing Normal University and Bachelor's degree in physical geography from Xibei University in China. He worked as a post-doctoral researcher at Boston University for over one year after his Ph.D. He joined GIScCE in August, 2006 as a post-doctoral research associate under Prof. David Roy at SDSU on land cover dynamics research using coarse resolution satellite imagery. Now he is a research assistant professor working exclusively on a project generating seamless Landsat ETM+ data for the conterminous United States (http:/landsat.usgs.gov/WELD.php). Recent Publications Roy, D. P., Ju, J., Mbow, C., Frost, P., Loveland, T. (2010) Accessing Free Landsat Data via the Internet: Africa’s Challenge. International Journal of Remote Sensing (in press).
Roy, D. P., Ju, J., Kline, K., Scaramuzza, P., Kovalskyy, V., Hansen, M., Loveland, T., Vermote, E., Zhang, C. (2010). Web-enabled Landsat Data (WELD): Landsat ETM+ composited mosaics of the conterminous United States. Remote Sensing of Environment. 114(1), 35-49.
Ju, J, Roy, D. P., Shuai, Y., Schaaf, C (2010). Development of an approach for generation of temporally complete daily nadir MODIS reflectance time series. Remote Sensing of Environment. 114(1), 1-20.
Roy, D.P., Boschetti, L., Justice C.O., Ju, J. (2008). The Collection 5 MODIS Burned Area Product – Global Evaluation by Comparison with the MODIS Active Fire Product. Remote Sensing of Environment, 112, 3690-3707. Roy, D.P., Ju, J., Lewis, P., Schaaf, C., Gao, F., Hansen, M., Lindquist, E. (2008) Multi-temporal MODIS-Landsat data fusion for relative radiometric normalization, gap filling, and prediction of Landsat data. Remote Sensing of Environment. 112, 3112-3130,doi 10.1016/j.rse.2008.03.009.
Ju, J. and Roy, D. P. (2008) The availability of cloud-free Landsat ETM+ data over the conterminous United States and globally. Remote Sensing of Environment.112(3):1196-1211. Ju, J., Gopal, S., and Kolaczyk, E.D.(2005). On the choice of spatial and categorical scale in remote sensing land cover characterization. Remote Sensing of Environment, 96(1):62-77. Kolaczyk, E.D, Ju, J., and Gopal,S.(2005). Multiscale and multigranular statistical image segmentation. Journal of American Statistical Association, 100(472):1358-1369. Ju, J., Kolaczyk, E.D., and Gopal, S. (2003). Gaussian mixture discriminant analysis and sub-pixel land cover characterization in remote sensing. Remote Sensing of Environment, 84(4),550-560. | |
