Title :
Multiresolution 3-D Reconstruction From Side-Scan Sonar Images
Author :
Coiras, Enrique ; Petillot, Yvan ; Lane, David M.
Author_Institution :
Ocean Syst. Lab., Heriot-Watt Univ., Edinburgh
Abstract :
In this paper, a new method for the estimation of seabed elevation maps from side-scan sonar images is presented. The side-scan image formation process is represented by a Lambertian diffuse model, which is then inverted by a multiresolution optimization procedure inspired by expectation-maximization to account for the characteristics of the imaged seafloor region. On convergence of the model, approximations for seabed reflectivity, side-scan beam pattern, and seabed altitude are obtained. The performance of the system is evaluated against a real structure of known dimensions. Reconstruction results for images acquired by different sonar sensors are presented. Applications to augmented reality for the simulation of targets in sonar imagery are also discussed
Keywords :
expectation-maximisation algorithm; image reconstruction; image resolution; sonar imaging; underwater sound; Lambertian diffuse model; expectation-maximization; imaged seafloor region; multiresolution 3D reconstruction; multiresolution optimization; seabed elevation maps; seabed reflectivity; side-scan beam pattern; side-scan sonar images; sonar sensors; Augmented reality; Convergence; Image reconstruction; Image resolution; Image sensors; Reflectivity; Sea floor; Sensor phenomena and characterization; Sonar; Three dimensional displays; 3-D reconstruction; Augmented reality; expectation–maximization; multiresolution; shape from shading; side-scan sonar; Acoustics; Algorithms; Artificial Intelligence; Image Enhancement; Image Interpretation, Computer-Assisted; Imaging, Three-Dimensional; Information Storage and Retrieval; Sensitivity and Specificity;
Journal_Title :
Image Processing, IEEE Transactions on
DOI :
10.1109/TIP.2006.888337
