Abstract
One of the most desired tools of image processing is spatial filtering. The Fourier filters in a 4f system can be used to detect the edges, enhance the contrast and to remove the noise so as to provide a better output image. Optical vortex has been used as a spatial filter to perform isotropic edge enhancement [1], the fractional and shifted vortex filters are used for selective edge enhancement [2,3] and anisotropic as well as shifted anisotropic vortex filters are used to get controlled orientation selective edge enhancement [4,5].
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References
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Sharma, M.K., Joseph, J., Senthilkumaran, P. (2014). Fractional Vortex Dipole Spatial Filtering. In: Osten, W. (eds) Fringe 2013. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-36359-7_46
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DOI: https://doi.org/10.1007/978-3-642-36359-7_46
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-36358-0
Online ISBN: 978-3-642-36359-7
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