O. Lezoray et al., Segmentation of cytological images using color and mathematical morphology. Acta. Stereol. 18(1), 1–14 (1999)
A.B. Flores et al., Small metal nanoparticle recognition using digital image analysis and high resolution electron microscopy. Micron 34(2), 109–118 (2003). https://doi.org/10.1016/S0968-4328(03)00006-4
J. Chatterjee, S. Chakraborty, K. Palodhi, Application of Walsh filters and subsequent angular-stitching for edge enhancement. J. Opt. (2021). https://doi.org/10.1088/2040-8986/abcf84
J.L. Walsh, A closed set of normal orthogonal functions. Am. J. Math. 45(1), 5–24 (1923)
Article MathSciNet Google Scholar
I. Bhattacharya, L.N. Hazra, Study of imaging characteristics of azimuthal Walsh filters. Am. J. Electron. Commun. I(2), 50–54 (2014)
M. De, L.N. Hazra, Walsh functions in problems of optical imagery. Opt. Acta (Lond) 24(3), 221–234 (1977). https://doi.org/10.1080/713819531
M.K. Sharma, J. Joseph, P. Senthilkumaran, Selective edge enhancement using anisotropic vortex filter. Appl. Opt. 50(27), 5279–5286 (2011). https://doi.org/10.1364/ao.50.005279
S. Fürhapter et al., Spiral phase contrast imaging in microscopy. Opt. Express 13(3), 689–694 (2005). https://doi.org/10.1364/opex.13.000689
G. Situ, G. Pedrini, W. Osten, Spiral phase filtering and orientation-selective edge detection/enhancement. J. Opt. Soc. Am. A 26(8), 1788–1797 (2009). https://doi.org/10.1364/josaa.26.001789
B. Zhang et al., Vectorial optical vortex filtering for edge enhancement. J. Opt. 18(3), 035703 (2016). https://doi.org/10.1088/2040-8978/18/3/035703
A. Fernández et al., Optical processing of color images with incoherent illumination: orientation-selective edge enhancement using a modified liquid-crystal display. Opt. Express 19(21), 21091–21097 (2011). https://doi.org/10.1364/oe.19.021091
J. Chatterjee, S. Chakraborty, K. Palodhi, Characterization of biomedical images using Walsh filters followed by convolution, in Proc. SPIE 11509, Optics and Photonics for Information Processing XIV, vol. 11509, p. 1150908 (2020). https://doi.org/10.1117/12.2570952
A.I. Mahan, C.V. Bitterli, S.M. Cannon, Far-Field diffraction patterns of single and multiple apertures bounded by arcs and radii of concentric circles. J. Opt. Soc. Am. 54(6), 721–732 (1964). https://doi.org/10.1364/JOSA.54.000721
R.A. Lessard, S.C. Som, Imaging properties of sector-shaped apertures. Appl. Opt. 11(4), 811–817 (1972). https://doi.org/10.1364/AO.11.000811
J. George, B. Sinclair, “Scanning electron micrograph (SEM),” CDC / Sickle Cell Foundation of Georgia, Public Health Image Library (2012). http://www.publicdomainfiles.com/show_file.php?id=13515797414154
J. George, B. Sinclair, “Scanning electron micrograph (SEM),” CDC / Sickle Cell Foundation of Georgia, Public Health Image Library (2012). http://www.publicdomainfiles.com/show_file.php?id=13515802813628
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