title: Shape from texture: estimation of planar surface orientation through the ridge surfaces of continuous wavelet transform.
abstract: In this correspondence, a method is proposed for estimating the surface orientation of a planar texture under perspective projection based on the ridge of a two-dimensional (2-D) continuous wavelet transform (CWT). We show that an analytical solution of the surface orientation can be derived from the scales of the ridge surface. A comparative study with an existing method is given.
authors.forename: W L
authors.initials: WL
authors.lastname: Hwang
authors.forename: C S
authors.initials: CS
authors.lastname: Lu
authors.forename: P C
authors.initials: PC
authors.lastname: Chung