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테라헤르츠 이미징기법을 이용한 유화의 상태분석 및 진단

Study of Condition Analysis and Diagnosis on Oil Paintings with Terahertz Imaging

  • 백나연 (한국전통문화대학교 학교기업 컨테크) ;
  • 송유나 (한국전통문화대학교 학교기업 컨테크) ;
  • 김문정 (A&A 예술과 미래 보존) ;
  • 정용재 (한국전통문화대학교 문화유산전문대학원 문화재수리 기술학과) ;
  • 이한형 (한국전통문화대학교 전통기술소재은행)
  • Baek, Na Yeon (School Based Enterprise Con-Tech, Korea National University of Cultural Heritage) ;
  • Song, You Na (School Based Enterprise Con-Tech, Korea National University of Cultural Heritage) ;
  • Kim, Moon Jeong (Art et Avenir Conservation) ;
  • Chung, Yong Jae (Department of Heritage Conservation and Restoration, Graduate School of Cultural Heritage, Korea National University of Cultural heritage) ;
  • Lee, Han Hyoung (Traditional Technique and Material Bank, Korea National University of Cultural Heritage)
  • 투고 : 2019.05.15
  • 심사 : 2019.06.17
  • 발행 : 2019.06.20

초록

본 연구에서는 우리나라 근대시기 유화 작품 3점('소년', '소녀', '혜화동풍경')에 테라헤르츠 이미징 기법을 활용하여 추출 가능한 작품 내부 정보의 종류와 이를 추출하기 위한 분석 조건을 연구하였다. 또한 테라헤르츠 스캔 적용 시 대상 작품의 굴곡에 따라 분석 대상 표면과 검출부 사이의 거리가 변화되어 발생하는 이미지 왜곡이 주된 문제점임을 파악하고, 이를 보완하기 위한 방법으로 '작동 거리 유지 장치'를 고안하였다. 연구 결과, 테라헤르츠 이미징 기법을 이용하여 유화의 바탕재 특성과 내부의 손상형태를 파악할 수 있음을 확인하였고 각 특성을 확인할 수 있는 최적의 조건을 제시하였다. 바탕재의 특성과 하부층 확인에는 테라헤르츠 주파수 분해 이미지를 활용하는 것이 유용하였으며 붓터치 등 채색기법을 파악하는 것에는 최대 반사피크 이미지와 단면 이미지가 효과적이었다. 또한 표면에서 관찰할 수 없는 작품 내부 손상 정보는 단면 이미지와 주파수 분해 이미지를 비교하는 것이 유용하였다. 회화작품에 적용한 결과, '소년'과 '소녀'에서는 내부의 구조적 손상 자국을, '혜화동풍경'에서는 작가의 채색 방식을 확인하였다. 이상의 결과는 우리나라 근대기 유화의 예방보존 및 보존처리를 위한 상태분석 및 진단에 활용될 수 있을 것으로 기대된다.

In this study, we applied terahertz imaging technology to three Korean modern oil paintings ('Boy,' 'Girl,' and 'Hyehwadong Landscape'); investigated the types of inner layer information in the pictures that can be extracted with terahertz imaging technology; and analyzed the conditions for extracting them. The biggest problem in the terahertz imaging analysis we encountered was the image distortion caused by the change of the distance between the target surface and the terahertz detector, depending on the surface curvature of the target paintings. We then developed a 'working distance maintaining device' to solve this problem. As a result, the terahertz imaging technique was used to identify the base material characteristics and any patterns of damage inside, and presented the optimal conditions for identifying each characteristic. In addition, it was useful to employ the terahertz frequency-division image to check the characteristics of the background materials. To confirm coloring techniques such as brush strokes, it is effective to compare the maximum reflection peak image with the cross-section image; and to detect damage information inside the paintings that cannot be observed on the surface, to compare the cross-section image with the frequency-division image. On the other hand, according to the terahertz imaging analysis of the oil paintings, the internal structural damage marks of 'Boy' and 'Girl' were confirmed, and the artist's painting style was confirmed in 'Hyehwadong Landscape.' The above results are expected to be useful for the analysis and diagnosis of Korean modern oil paintings for their preservation.

키워드

참고문헌

  1. Ahn, J.W., 2016, A study on the damage types of the oil paintings. Master's thesis, Konkuk University, Cheongju, 1-22. (in Korean with English abstract)
  2. Baek, N.Y., Kang, D.I., Ha, T.W., Sim, K.I., Lee, H.W., Kim, J.H. and Lee, H.H., 2016, Study of noncontact condition diagnosis on painting with terahertz waves. Journal of Conservation Science, 32(2), 235-247. (in Korean with English abstract) https://doi.org/10.12654/JCS.2016.32.2.12
  3. Fukunaga, K., Ogawa, Y., Hayashi, S. and Hosako, I., 2007, Terahertz spectroscopy for art conservation. IEICE Electronics Express, 4(8), 258-263. https://doi.org/10.1587/elex.4.258
  4. Fukunaga, K. and Picollo, M., 2014, Terahertz time domain imaging for cultural heritage. Insight-Non-Destructive Testing and Condition Monitoring, 56(3), 142-146. https://doi.org/10.1784/insi.2014.56.3.142
  5. Hong, T.Y., Choi, K.J., Ha, T.W., Park, B.C., Sim, K.I., Kim, J.H., Kwon, J.E., Lee, S.H., Kang, D.I. and Lee, H.H., 2014, Terahertz time-domain and fourier-transform infrared spectroscopy of traditional Korean pigments. Journal of the Korea Physical Society, 64(5), 727-731. https://doi.org/10.3938/jkps.64.727
  6. Kim, E.J., 2009, Formation of Korean western painting and painting style of 1930s. Master's thesis, Chungbuk National University, Cheongju, 1-8. (in Korean with English abstract)
  7. Kohler, W., Panzer, M.J., Klotzbach, U., Beyer, E., Winnerl, S., Helm, M., Rutz, F., Jordens, C., Koch, M. and Leitner, H., 2006, Non-destructive investigation of paintings with THz-radiation. 9th European Conference of NDT, Berlin, September 25-29, 181.
  8. Lee, H.H., Jung, C.H., Baek, N.Y., Song, Y.N., Kim, M.J. and Chung, Y.J., 2018, Feature detection of paintings using hyperspectral imaging technique. The Korean Society of Conservation Science for Cultural Heritage, Cheongju, November 2-3, 43-44. (in Korean)
  9. Rhee, C.H., 2008, Terahertz pulsed imaging and its applications. New Physics: Sae Mulli, 56(2), 51-62. (in Korean with English abstract)
  10. Science Daily, 2019, Ancient Roman man hidden beneath famous painting at the Louvre. https://www.sciencedaily.com (May 1, 2019)