The Underwater Stereoscopic Measurement System

Xybion Corporation will develop a video-camera based Underwater Stereoscopic Measurement System (USMS) for making routine size estimates of close range objects (0.3 - 8.0 meters from the cameras.) The USMS will build on a set of proprietary algorithms that were developed by Xybion for stereoscopic imaging and are incorporated in a commercial software package. The system will consist of a rigid submersible mount that will hold two video cameras with overlapping fields-of-view in fixed relative positions. A detachable, rigid, calibration mount will also be provided. The stereo cameras will be time-synchronized so that the recorded images from the two cameras can be temporarily aligned during post processing. Post processing is performed on a personal computer with an appropriate frame-grabber board. Using a monitor, the user interactively selects the objects of interest for evaluation.