Analysis of small scale bedforms with 2D and 3D image acquisition techniques

Reviews a two-dimensional measurement technique based on a structured light approach. The technique is applied to the recovery of bedform morphodynamics. Along with this technique a three-dimensional measurement strategy, which uses a stereo vision approach coupled with structured light, allowing the morphological evolution of a sandy bottom to be recovered, is presented. The bottom evolution under wave action was observed from the initial flat bed condition until a stable configuration was attained. In particular, the three-dimensional approach allows a reconstruction of the bedforms to be performed, and their irregularities, such as defects, change of wavelength, etc., to be shown.