Karuntanović T, et al. In vitro comparison of the accuracy of two apex locators of different generations. Acta Medica Medianae. 2019;58(1):28–32.
Arslan ZB, et al. Diagnostic accuracy of panoramic radiography and ultrasonography in detecting periapical lesions using periapical radiography as a gold standard. Dentomaxillofac Radiol. 2020;49(6):20190290.
Katayama R. Series: practical evaluation of clinical image quality (1): image quality verification of digital radiography. Igaku Butsuri. 2016;35(4):307–13.
Çalışkan A, Sumer AP. Definition, classification and retrospective analysis of photostimulable phosphor image artefacts and errors in intraoral dental radiography. Dentomaxillofac Radiol. 2017;46(3):20160188.
Raghav N, et al. Comparison of the efficacy of conventional radiography, digital radiography, and ultrasound in diagnosing periapical lesions. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2010;110(3):379–85.
Shah N, Bansal N, Logani A. Recent advances in imaging technologies in dentistry. World J Radiol. 2014;6(10):794–807.
Lo WY, Puchalski SM. Digital image processing. Vet Radiol Ultrasound. 2008;49(1 Suppl 1):S42–7.
Alkhaled F, Hasan A, Alhammad A. Improving radiographic image contrast using multi layers of histogram equalization technique. IAES Int J Artif Intell. 2021;10:151–6.
White SC, Pharoah MJ. Oral radiology: principles and interpretation. St. Louis: Mosby Inc.; 2019.
Subramani B, Veluchamy M. Fuzzy gray level difference histogram equalization for medical image enhancement. J Med Syst. 2020;44(6):103.
Kumar A, Bhadauria HS, Singh A. Descriptive analysis of dental X-ray images using various practical methods: a review. PeerJ Comput Sci. 2021;7: e620.
Zimmerman JB, et al. A psychophysical comparison of two methods for adaptive histogram equalization. J Digit Imaging. 1989;2(2):82–91.
Leszczynski KW, Shalev S, Cosby NS. The enhancement of radiotherapy verification images by an automated edge detection technique. Med Phys. 1992;19(3):611–21.
Pretty IA. Caries detection and diagnosis: novel technologies. J Dent. 2006;34(10):727–39.
Pizer SM, et al. Adaptive histogram equalization and its variations. Comput Vis Graph Image Process. 1987;39(3):355–68.
Singh P, Mukundan R, De Ryke R. Feature enhancement in medical ultrasound videos using contrast-limited adaptive histogram equalization. J Digit Imaging. 2020;33(1):273–85.
Niroomandfam B, NickravanShalmani A, Khalilian M. Breast abnormalities segmentation using the wavelet transform coefficients aggregation. Iran Quart J Breast Dis. 2019;12(2):57–71.
Kalyani J, Chakraborty M. Contrast enhancement of MRI images using histogram equalization techniques. in 2020 International Conference on Computer, Electrical & Communication Engineering (ICCECE); 2020.
Albeiruti H, AwheedJeiad H. OPG images preprocessing enhancement for diagnosis purposes. Int J Sci Res. 2018;7:1656–64.
Leonardi Dutra K, et al. Diagnostic accuracy of cone-beam computed tomography and conventional radiography on apical periodontitis: a systematic review and meta-analysis. J Endod. 2016;42(3):356–64.
Palatyńska-Ulatowska A, et al. The pulp stones: morphological analysis in scanning electron microscopy and spectroscopic chemical quantification. Medicina (Kaunas). 2021;58(1):5.
Alwazzan MJ, Ismael MA, Ahmed AN. A hybrid algorithm to enhance colour retinal fundus images using a wiener filter and CLAHE. J Digit Imaging. 2021;34(3):750–9.
Qassim HM, Basheer NM, Farhan MN. Brightness preserving enhancement for dental digital X-ray images based on entropy and histogram analysis. J Appl Sci Eng. 2019;22(1):187–94.
ElSayed A, Yousef WA, Matlab vs. OpenCV: a comparative study of different machine learning algorithms. ArXiv, 2019. abs/1905.01213.
Soltani P, et al. Application of fractal analysis in detecting trabecular bone changes in periapical radiograph of patients with periodontitis. Int J Dent. 2021;2021:3221448.
Coşgunarslan A, et al. The evaluation of the mandibular bone structure changes related to lactation with fractal analysis. Oral Radiol. 2020;36(3):238–47.
Meier AW, et al. Interpretation of chemically created periapical lesions using direct digital imaging. J Endod. 1996;22(10):516–20.
Rahmi-Fajrin H, et al. Dental radiography image enhancement for treatment evaluation through digital image processing. J Clin Exp Dent. 2018;10(7):e629–34.
Mehdizadeh M, Dolatyar S. Study of effect of adaptive histogram equalization on image quality in digital preapical image in pre apex area. Res J Biol Sci. 2009;4(8):922–4.
