Design and Validation of a Wavelength-resolved Optical Turbidity Meter for Underwater Imaging
2025 IEEE Ocean Engineering Technology and Innovation Conference, OETIC 2025, Hybid, Purwokerto, Endonezya, 16 Aralık 2025, ss.52-59, (Tam Metin Bildiri)
- Yayın Türü: Bildiri / Tam Metin Bildiri
- Doi Numarası: 10.1109/oetic67587.2025.11512876
- Basıldığı Şehir: Hybid, Purwokerto
- Basıldığı Ülke: Endonezya
- Sayfa Sayıları: ss.52-59
- Anahtar Kelimeler: backscattering, Kaolin Standard Solution, Light attenuation, Optical turbidity meter, Turbidity, Underwater imaging, Wavelength-resolved sensing
- Orta Doğu Teknik Üniversitesi Kuzey Kıbrıs Kampüsü Adresli: Evet
Özet
While the harsh, dynamic and unpredictable nature of the underwater environment pose a challenge to vision related tasks, an increasing demand for regular inspection and maintenance of submerged structures is required to meet safety standards and preserve prevailing ecosystems. Variations of light attenuation coefficient is a function of the contributing factors and is wavelength dependent. Turbidity fluctuations significantly influence the effectiveness of visual inspection of submerged structures. Simultaneous in-situ measurement of the underwater environment’s optical properties, together with imaging, provides a basis for correcting distortions and improving visualization. As a step toward robust underwater image recovery, we present the design, construction, and experimental validation of a wavelength-resolved optical turbidimeter capable of measuring both attenuation and backscattering. Using the transmitted-light method, the system offers discrete wavelength measurements across the visible spectrum, a modular hardware design, continuous data acquisition with onboard storage, and sensitivity to spectral changes in attenuation and backscattering across different turbidity levels. Kaolin-based experiments are conducted to evaluate the System. Future work aims at integrating the measured optical parameters to distorted underwater image recovery algorithms. This work contributes to low-cost spectral turbidity instrumentation, offering capabilities that directly enhance underwater imaging and support advanced ocean engineering applications..