水下光學(xué)成像圖像的典型劣化分析與仿真模擬(已修改)
2025-07-05 18:07 本頁面
【正文】 . . . .. .水下光學(xué)圖像劣化分析與仿真模擬李維香，陳曄，袁飛* （廈門大學(xué) 水聲通信與海洋信息技術(shù)教育部重點(diǎn)實(shí)驗(yàn)室 廈門 361005）摘 要：對(duì)水下圖像進(jìn)行有效的改善必須建立在水下成像系統(tǒng)的機(jī)制和特性的研究基礎(chǔ)之上。在分析總結(jié)了水下光學(xué)圖像獲取過程中的劣化類型和原因的基礎(chǔ)上，基于JaffeMcGlamery成像模型，成功仿真了淺海干凈水質(zhì)下、光學(xué)攝像機(jī)水下拍攝成像圖像模糊、色彩降維等劣化特點(diǎn)，體現(xiàn)了攝像機(jī)、光源與成像平面的位置特點(diǎn)以及海水前向散射、光譜選擇性吸收和衰減等影響，同時(shí)體現(xiàn)了光學(xué)設(shè)備對(duì)成像的離焦和運(yùn)動(dòng)造成的劣化。研究成果對(duì)于光學(xué)系統(tǒng)設(shè)計(jì)及圖像的后續(xù)處理具有一定的理論支撐和參考價(jià)值。關(guān)鍵詞：水下成像；圖像劣化；劣化分析；JaffeMcGlamery模型The Degradation Analysis and Simulation of Underwater Optical ImageLI WeiXiang， CHEN Ye， YUAN Fei (Xiamen University Key Laboratory of Underwater Acoustic Communication and Marine Information Technology Xiamen 361005, China))Abstract：The effectively improvement of the underwater image must base on the research about the underwater imaging system’s mechanism and characteristics. On the basis of the analysis on the underwater optical image’s degradation types and reasons in the process of obtaining, this paper successfully simulates the deterioration characteristics such as image blur, color reduction based on JaffeMcGlamery imaging model in the shallow water and clean water situation. The result shows the location characteristics of the camera and the light source and the imaging plane, and the impact that the water forward scattering and absorption select and attenuation cause on. Meantime it reflects the deterioration characteristic caused by the device defocus and motion. The result is valuable and can be reference to the design of optical system and the image preprocess. Keywords：underwater imaging； image distortion；distortion analytics； JaffeMcGlamery model 學(xué)習(xí)好幫手0 引 言水下成像成為海洋開發(fā)和利用領(lǐng)域中極有價(jià)值的方式之一。水下成像過程中,水體的結(jié)構(gòu)對(duì)光的傳播有很大的影響。水介質(zhì)的密度遠(yuǎn)大于空氣密度,相對(duì)于空氣中所拍攝的普通圖像來說水下成像所遇到的問題更為復(fù)雜和困難。典型的水下圖像由于存在照明條件不良及水體對(duì)光的吸收效應(yīng)、散射效應(yīng)和卷積
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