ABSTRACT
This chapter focuses on the application of a standard anomaly detection technique to feature fields of material microstructure. The orientation field of fibers in the composite can be treated like a velocity field in a flowing fluid. Visualization of the orientation field is achieved through the use of the HSV color model. The HSV color space is parameterized by three parameters; hue, saturation, and value. The orientation field is visualized by assigning hue to each fiber in the segmented image according to its angle of orientation. The orientation gradient is visualized according to the eigenvectors and eigenvalues of the symmetric portion of the gradient. To capture the idea of neighborhood calculations, the gradient is visualized with a colored Voronoi diagram. Each cell in the Voronoi is centered on a fiber and assigned a hue based on the direction of the symmetric gradient’s primary eigenvector. True anomalies are present in multiple layers due to the rigidity of the fibers.
