20.500.12556/DKUM-96647 Exploring the impact of imaging resolution and sharpness on dermatological diagnostics using eSFR measurements High-resolution, small-form-factor image sensors enable the integration of mobile device cameras, which are increasingly being used for photographic documentation in many fields, including medicine. With the interface and handheld dermatoscopy, the smartphone camera forms an alternative tool to professional dermatoscopic systems for performing teledermatology and teledermoscopy. For the accurate diagnosis of skin diseases, image quality is essential, with sharpness and resolution being essential criteria. This paper focusses on measuring the sharpness and resolution of cameras used for image acquisition in dermatology using the spatial frequency response (SFR) method, which is based on standardised test charts featuring characteristic slanted contrast edges, known as edge SFR (eSFR) charts. The images were captured with mirrorless and DSLR cameras, smartphones, and a professional dermatoscopy video camera under typical dermatological conditions with digital cameras, mobile phones, and professional video dermatoscopes. Captured images were analysed, and the modulation transfer function (MTF) was defined to evaluate the performance of different camera optical systems applied for dermatological imaging. The results provide insight into the strengths and limitations of the various imaging devices and highlight their effectiveness in meeting the requirements of dermatological practice eSFR image resolution image sharpenes digital camera resolucija slike ostrina like digitalni fotoaparati true false true Kaunas University of Technology, Lithuania Angleški jezik Slovenski jezik https://eejournal.ktu.lt/index.php/elt The copyright for the paper in this journal is retained by the author(s) with the first publication right granted to the journal. Članek v reviji 2026-01-22 11:34:28 2026-01-22 11:34:29 2026-01-23 03:13:53 0000-00-00 00:00:00 2025 0 0 str. 47-55 no. 1 Vol. 31 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2024-10-02 2025-01-12 2025-01-01 779:771.537 230156547 10.5755/j02.eie.40333 1392-1215 eejour,+06__ISSN_1392-1215__Exploring+the+Impact+of+Imaging+Resolution+and+Sharpness+on+Dermatological+Diagnostics+Using+.pdf eejour,+06__ISSN_1392-1215__Exploring+the+Impact+of+Imaging+Resolution+and+Sharpness+on+Dermatological+Diagnostics+Using+.pdf 1 EC4693993C3A32BA05CA205275C5CFB8 8a734d88d8837c3a6e2ac7353d5624b69a00d5ca06fd9837e543b57fd9c6967e ada833d9-f77e-11f0-a060-00155d00018d https://dk.um.si/Dokument.php?lang=slv&id=202397 https://eejournal.ktu.lt/index.php/elt/article/view/40333 0 a75a147d-f77e-11f0-a060-00155d00018d https://dk.um.si/Dokument.php?lang=slv&id=202396 Fakulteta za elektrotehniko, računalništvo in informatiko 0 0 0