1. Gonzalez, R. C., Woods, R. E., & Eddins, S. L. (2004). Digital image processing using MATLAB. Noida: Pearson Education India.
2. Meher, S. K., & Singhawat, B. (2014). An improved recursive and adaptive median filter for high density impulse noise. AEU-International Journal of Electronics and Communications, 68, 1173–1179. https://doi.org/10.1016/j.aeue.2014.06.006
3. Yildirim, M., & Kacar, F. (2019). Adapting Laplacian based filtering in digital image processing to a retina-inspired analog image processing circuit. Analog Integrated Circuits and Signal Processing, 100, 537–545.
4. Shimmi, T., Kobayashi, H., Yagi, T., Sawaji, T., Matsumoto, T., & Abidi, A. A. (1992). A parallel analog CMOS signal processor for image contrast enhancement. In: ESSCIRC’92 Eighteenth European solid-state circuits conference (pp. 163–166). IEEE.
5. Marr, D., & Hildreth, E. (1980). Theory of edge detection. Proceedings of the Royal Society of London Series B Biological Sciences, 207, 187–217.