Enhancement of Underwater Images Using FPGA

Abstract

Due to low illumination and changing environmental circumstances, underwater photography is difficult. The obtained weak images must be upgraded due to limited light offered by the Automated Underwater Vehicles (AUV). In order to employ AUVs, image enhancing algorithms must be created in hardware. Because of their intrinsic parallelism, Field Programmable Gate Arrays (FPGA) have shown to be a superior solution for image processing approaches. Power law transform, contrast stretching, Histogram Equalization, Histogram Stretching, and Negative transformation are among the spatial domain procedures used to preprocess an underwater picture. A comparison of the above-mentioned picture enhancement technique implemented in FPGA is conducted in this work.