UNDERWATER IMAGE ENHANCEMENT TECHNIQUES wiTH iLLUMINATION CORRECTION AND dETAIL pRESERVING

Abstract

Underwater image processing has attracted many researchers to explore more scientific newlineresearch and its applications, such as preserving and restoring underwater cultural heritage, newlinedetection of underwater pipelines, underwater object detection and tracking, underwater newlineobject recognition, etc. One of the main challenges in underwater image processing is to newlineaddress the illumination variations. These variations may lead to non-uniform illumination, newlinecausing white regions color cast, color distortions, halo effects, artifacts, and loss in newlinestructural or edge detail in the image. However, developing a standard image enhancement newlinemethod suitable for different applications is challenging in addressing the illumination newlinevariations. Therefore, in this thesis work, we have developed various underwater image newlineenhancement methods to address the non-illumination variations limitations and preserve newlinethe image detail. Further, the methods proposed are not limited to underwater image newlineenhancement but extended to various applications such as dehazing, defogging, and lowlight image enhancement. newline