Endoscope is widely used in the minimally invasive surgery. However the size and distortion of endoscope images limit its use in the surgery planning and navigation. In this project, we stitch the endoscope video images up to get a large view of the knee surface, which actually enlarge the view of the surgeons thus enable them to explore the knee surface in the operation. We first correct the r...

Surface pasting is a hierarchical modeling technique capable of adding local details to tensor product Bspline surfaces without incurring significant computational costs. In this paper, we describe how the continuity conditions of this technique can be improved through the use of least squares fitting and the application of some general B-spline continuity properties. More importantly, we addre...

In his seminal article [18] S. Smale outlined a program for the investigation of the properties of generic smooth dynamical systems. He proposed as definition of the object of study the smooth action of a non-compact Lie group G on a manifold M ; i.e., a smooth function f : G ×M →M satisfying f(g1, f(g2, x)) = f(g1g2, x) and f(e, x) = x for all x ∈ M and all g1, g2 ∈ G, where e is the identity ...

A strong molecule-surface interaction between free-base-tetra(4-bromophenyl)-porphyrin and Cu(111) results in a distortion of both the molecule and the underlying copper surface in the vicinity of the molecule. This in turn leads to the formation of an intermediate complex due to bonding between the iminic nitrogens and surface copper atoms.

New capabilities of the Berg–Barrett topographic method are demonstrated using a skew-asymmetric X-ray diffraction scheme for investigating structural changes near the surface of semiconductor materials. Specifying the X-ray extinction depth, the details of defects and strains are revealed with high resolution. Consequently, analysis of structural distortion of layers near the surface after var...

IN 1985, individuals filing U.S. tax returns reported $166.4 billion of long-term capital gains in excess of short-term capital losses.' The following year Congress enacted a significant increase in capital gains taxes effective in 1987, and capital gains realizations for 1986 nearly doubled, to $324.8 billion.2 That investors' expectations of tax changes would alter their realization practices...

Functional imaging studies have implicated the orbitofrontal cortex (OFC) in the pathophysiology of borderline personality disorder (BPD). To date, however, volume-based magnetic resonance imaging (MRI) studies have yielded mixed results. We used a surface-based processing approach that allowed us to measure five morphometric cortical features of the OFC, including volumetric (cortical thicknes...