Before Applying the LSR Method (IMAGE) Optica Caption Image was taken in conditions of natural illumination of seawater. Since the water visibility is poor, the pictures have a low quality characterized by high-intensity noise and low contrast. Credit <a href="mailto:wangnanseu@163.com">Nan Wang</a> Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.