This book deals about Underwater Image enhancement by Wavelet based fusion. The Images captured in water is hazy due to the several effects of the underwater medium. These effects are governed by the suspended particles that lead to absorption and scattering of light during image formation process. The underwater medium is not friendly for imaging data and brings low contrast and fade colour issues. Therefore, the images are processed and divided into frames, during any image based exploration and inspection activity, it is very essential to enhance the imaging data before going for further...