The aim of "Shape From Texture (SFT)" methods is to obtain three dimensional information out of the monocular view of a scene. In this article, we detail a 2-step SFT computational method. A new local scales extraction technique is used in the first step to compute the local scale of each point of the picture through an interpolation of wavelet values. In the second step, the interpolation of the local scales map helps get a hold of the textured plane's orientation, using the perspective projection model. This method, which is an improvement over Lu's, was tested on synthetic and real textures. Results obtained were consistently better, notably in the case of small slant angles. We also improved the orientation computation by using the vanishing line equation for macrotextures.