From the preface of Linear Algebra and its Applications: “Linear algebra is a fantastic subject. On the one hand it is clean and beautiful.” – Gilbert Strang This wonderful branch of mathematics is both beautiful and use- ful. It is the corne

When capturing an iris image under unconstrained conditions and without user cooperation, the image quality can be highly degraded by poor focus, off-angle view, motion blur, specular reflection (SR), and other artifacts. The noisy iris images in