By Howard Unkeles and Harold Orlinsky Creating a sidescan mosaic for a survey is easy. And doing a second survey is also easy. You can even use the same line plans, as the area is known. But what’s difficult is to find any differences between the two. A visual inspection will find new features, or if there if something moved. But imagine doing this for a huge survey area, a 1:10,000 boat sheet or an area like the Port of Los Angeles. This inspection would take a while, and subtle differences might be overlooked. In the upcoming release, we created an automated tool to analyze …