Optimized Video Coding for Underwater Wireless Optical Communication using Neighborhood Correlation and Delta Encoding

The unique video coding scheme presented in this chapter for use with UWOC is based on NCS-DEMRLE. From this point of view, the chapter makes this proposition. With the NCS-DEMRLE approach (where NCS stands for Navigated Control Surface, DEMRLE stands for Differential Excitation MRLE, which is the excitation of the MRLE controls with a known differential excitation signal) they can take pictures of the area of interest without even rising above the surface of the water. Another interesting feature is that the frames captured in the film are also correctly coded. The NCS-DEMRLE is a matter of a total of three major processes which need to be followed. The names of these three techniques are bit reduction using NCS, delta encoding, and MRLE based compression. A change is made to the conventional RLE approach in order to obtain MRLE. Finally, this adjustment fits with reducing the amount of memory and bandwidth needed to transmit data. A comprehensive simulation analysis was made during the course of the investigation to illustrate a clear picture how the NCS-DEMRLE technique performs its job efficiently.