1. Gonzalez RC, Woods RE (2018) Digital image processing, 4th edn. Pearson Education India, pp 140–188, 318–337
2. Goyal B, Agrawal S, Sohi BS (2018) Noise issues prevailing in various types of medical images. Biomed Pharmacol J 11(3):1227
3. He K, Sun J, Tang X (2012) Guided image filtering. IEEE Trans Pattern Anal Mach Intell 35(6):1397–1409
4. Pham CC, Jeon JW (2014) Efficient image sharpening and denoising using adaptive guided image filtering. IET Image Proc 9(1):71–79
5. Li Z, Zheng J, Zhu Z, Yao W, Wu S (2014) Weighted guided image filtering. IEEE Trans Image Process 24(1):120–129