A modified shadow segmentation technique for satellite images

  • Authors

    • D. Usha Nandini
    • Dr. Ezil Sam Leni
    https://doi.org/10.14419/ijet.v7i4.21565
  • Satellite images provide plenty of information about the the earth and it’s environment. However, presence of shadows hinders the image analysis process. This paper introduces a new technique for shadow identification which involves color models and an optimization algorithm. The RGB color image is transformed to C1C2C3 and HSI color images since they contain more shadow information than the RGB image. Subsequently these images are fed individually to the ant colony optimization algorithm which identifies shadows based on its properties. The resulting ouputs of the color models are combined using the Boolean operator which retrieves the binary image containing shadows.

  • References

    1. [1] P. L. Rosin and T. Ellis, “Image Difference Threshold Strategies and Shadow Detection,†in sixth British Machine Vision Conference, Birmingham, page 347-356, 1996.

      [2] W. Zhang, X.Z. Fang, and X. Yang, “Moving Cast Shadows Detection Based on Ratio Edge,†IEEE International Conference on Pattern Recognition, page 763-766, November 2006.

      [3] Y. L. Tian, M. Lu, and A. Hampapur, “Robust and Efficient Foreground Analysis for Real-time Video Surveillance,†IEEE Computer Vision and Pattern Recognition, 005, pp. I: 1182-1187.

      [4] A.A.Polidorio, F.C.Flores, N.N.Imai, A.M.Tomaselli and C.Franco, “Automatic Shadow Segmentation in Aerial Imagesâ€, Proc. Brazilian Symposium on Computer Graphics and Image Processing, 2003, pp. 270-277.

      [5] V V.J.D.Tsai, “A Comparative Study on Shadow Compensation of Color Aerial Images in Invariant Color Modelsâ€, IEEE Transactions on Geoscience and Remote Sensing, vol. 44, no. 6, pp. 1661-1671, June 2006. https://doi.org/10.1109/TGRS.2006.869980.

      [6] K.L.Chung, Y.R.Lin, Y.H.Huang, “Efficient Shadow Detection of Color Aerial Images Based Successive Thresholding Schemeâ€, IEEE Transactions on Geoscience and Remote Sensing, pp. 671-682, 2009. https://doi.org/10.1109/TGRS.2008.2004629.

      [7] Salvador E, Cavallaro A and Ebrahimi T, 2004, “Cast Shadow Segmentation using Invariant Color Featuresâ€, Computer Vision and Image Understanding, 95, pp. 238-259. https://doi.org/10.1016/j.cviu.2004.03.008.

      [8] V.Arevalo, J.Gonzalez and G.Ambrosio, “Shadow Detection in Color High-resolution Satellite Imagesâ€, International Journal of Remote Sensing, Vol.29, No.7, April 2008, 1945-1963. https://doi.org/10.1080/01431160701395302.

      [9] M.Dorigo, V.Maniezzo, A.Colorni “Ant System: Optimization by a Colony of Cooperating Agentsâ€, Man and Cybernetics, vol.26, pp. 29-41, 1996. https://doi.org/10.1109/3477.484436.

      [10] N.Otsu, “A Threshold Selection Method from Gray Level Histogramsâ€, IEEE Transactions on System, Man and Cybernetics, 1979.

      [11] D.Usha Nandini, Dr.Ezil Sam Leni, “A Survey of the Existing Shadow Detection Techniquesâ€, International Conference on Control, Instrumentation, Communication and Computational Technologies, pp.175-177, 2014.

      [12] D.Usha Nandini, Dr.Ezil Sam Leni, “Shadow Identification using Ant Colony Optimizationâ€, Journal of Theoretical and Applied Information Technology, vol. 78,no.2, pp.195-200, 2015.

      [13] M.Dorigo, L.M.Gambardella, “Ant Colony System: A Cooperative Learning Approach to the Travelling Salesman Problemâ€, IEEE Transactions on Evolutionary Computation, vol. 1, pp. 53-66, 1997. https://doi.org/10.1109/4235.585892.

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  • How to Cite

    Nandini, D. U., & Leni, D. E. S. (2018). A modified shadow segmentation technique for satellite images. International Journal of Engineering & Technology, 7(4), 3209-3212. https://doi.org/10.14419/ijet.v7i4.21565