The texture can be observed and compared directly from the two-dimensional diffraction frames without data processing. This chapter shows the processes of pole-density mapping and the pole-figure processes of the pole-figure data collected from an aluminum plate. Since a one-dimensional pole density mapping is created from each exposure with two-dimensional X-ray diffraction (XRD2), it is important to lay out a data collection strategy so as to have the optimum pole-figure coverage and less redundancy in the data collection. Each pole-figure can only define the orientation distribution of a particular crystal direction normal to the crystallographic plane, but the orientation distribution function (ODF) defines the full representation of the crystallographic orientation distribution. If the texture has a rotational symmetry with respect to a sample orientation, the texture is referred to as a fiber texture. The polymer sample evaluated by XRD can be in the form of powders, fibers, films, plate, and bulk solid.

Across three volumes, this handbook presents comprehensive coverage of all aspects of computer vision from image formation to scene understanding. Volume 3 (From Pattern to Object) examines object recognition, neural networks, motion analysis, and 3D reconstruction of a scene.