지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2024.12
- 수록면
- 739 - 747 (9page)
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초록· 키워드
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Purpose : Dental clinics had a variety of lighting conditions, which could affect digital photography. Digital Single-Lens Reflex Camera (DSLR) was usually used to take intraoral photos. Recently, there has been a growing trend to use smart-phones with the advancement of technology. The aim of this study was to analyze the differences of photographs taken with digital and smartphone cameras under different color temperature conditions.
Materials and Methods : Three types of camera equipment were used: a DSLR (EOS 800D; Canon, Tokyo, Japan) with a macro lens (EF 100mm f/2.8 Macro USM, Tokyo, Japan) and diffuser (Lumilab, Gimpo, Korea) and two types of smart-phones; Galaxy (Samsung, Suwon, Korea) and iPhone (Apple, California, USA) with Smile line MDP (Smile line SA, St-lmier, Switzerland). All photographs were taken 30 times for every 500°K color temperature from 3500°K to 6000°K. Color information was extracted from the central part of the tooth using image editing software (Adobe Photoshop CS4, Adobe, California, USA). ΔE value was calculated by this formula based on CIE L*a*b* color systems. All statistical analyses were performed using SPSS (version 23, SPSS, Chicago, USA), with a significance level of 0.05.
Results : In this study, DSLR showed the highest ΔE value followed by iPhone and Galaxy. DSLR showed minimum ΔE value in 4O00°K, iPhone and Galaxy showed in 4500°K. The lowest L* value was DSLR, followed by iPhone and Galaxy. The highest a* value was DSLR, followed by iPhone and Galaxy, except for 4000°K. The lowest b* value was DSLR, fol-lowed by Galaxy and iPhone. So DSLR was the darkest, reddest, and bluest of the three equipment.
Conclusion : Although there was a significant difference from the actual shade, Galaxy showed the most similar color. Because each device showed different results, it was essential to consider the characteristics of each imaging device.
Materials and Methods : Three types of camera equipment were used: a DSLR (EOS 800D; Canon, Tokyo, Japan) with a macro lens (EF 100mm f/2.8 Macro USM, Tokyo, Japan) and diffuser (Lumilab, Gimpo, Korea) and two types of smart-phones; Galaxy (Samsung, Suwon, Korea) and iPhone (Apple, California, USA) with Smile line MDP (Smile line SA, St-lmier, Switzerland). All photographs were taken 30 times for every 500°K color temperature from 3500°K to 6000°K. Color information was extracted from the central part of the tooth using image editing software (Adobe Photoshop CS4, Adobe, California, USA). ΔE value was calculated by this formula based on CIE L*a*b* color systems. All statistical analyses were performed using SPSS (version 23, SPSS, Chicago, USA), with a significance level of 0.05.
Results : In this study, DSLR showed the highest ΔE value followed by iPhone and Galaxy. DSLR showed minimum ΔE value in 4O00°K, iPhone and Galaxy showed in 4500°K. The lowest L* value was DSLR, followed by iPhone and Galaxy. The highest a* value was DSLR, followed by iPhone and Galaxy, except for 4000°K. The lowest b* value was DSLR, fol-lowed by Galaxy and iPhone. So DSLR was the darkest, reddest, and bluest of the three equipment.
Conclusion : Although there was a significant difference from the actual shade, Galaxy showed the most similar color. Because each device showed different results, it was essential to consider the characteristics of each imaging device.
목차
ABSTRACT
I. Introduction
II. Materials and methods
III. Results
IV. Discussion
V. Conclusion
Reference
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