Dense 3D reconstruction of the surgical site is important for providing image-guidance, augmented reality and, in robotic surgery, active constraints. The challenge with endoscopic images is that soft-tissue surfaces do not always have salient characteristics and computational techniques fail to achieve unique correspondence. In this paper, we propose a novel method for handling homogenous regi...

In this paper, we propose a new neural network (NN) design optimized by simulated annealing method for a robust 3D shape reconstruction. This NN deals with complicated task to reconstruct a complete representation of a given object relying only on a limited number of views and erroneous depth maps of shaded images. The depth maps are obtained by Tsai-Shah shape-from-shading (SFS) algorithm. We ...

Phorbol 12-myristate 13-acetate (PMA), a tumor promoter, provides effective means of reversibly converting tissue culture cells to a state which resembles that of transformed cells. PKC isozymes can be activated by PMA and cause reorganization of actin-containing structures. The purpose of the current research is to analyze the pattern in which PKC mediates dissolution of stress fibers (SFs) by...

We discuss connection between spin-dependent SFs of nucleons and nu-clei in the deep inelastic lepton scattering. The case of the deuteron is studied in detail in the Bethe-Salpeter formalism. In the present talk we discuss the spin-dependent structure functions (SF) of nuclei and their relation to those of nucleon. Our main focus will be the deuteron, which we study in detail in the covariant ...

Visual stimuli with different spatial frequencies (SFs) are processed asymmetrically in the two cerebral hemispheres. Specifically, low SFs are processed relatively more efficiently in the right hemisphere than the left hemisphere, whereas high SFs show the opposite pattern. In this study, we ask whether these differences between the two hemispheres reflect a low-level division that is based on...

Model-based shape from shading (SFS) is a promising paradigm introduced by Atick et al. [Neural Comput 8 (1996), 1321– 1340 ] in 1996 for solving inverse problems when we happen to have a lot of prior information on the depth profiles to be recovered. In the present work we adopt this approach to address the problem of recovering wafer profiles from images taken using a scanning electron micros...

Stress fibers (SFs) are often the most prominent cytoskeletal structures in cells growing in tissue culture. Composed of actin filaments, myosin II, and many other proteins, SFs are force-generating and tension-bearing structures that respond to the surrounding physical environment. New work is shedding light on the mechanosensitive properties of SFs, including that these structures can respond...

This report proposes a mathematical and algorithmic study of the Lambertian SFS problem for orthographic and pinhole cameras. Our approach is based upon the notion of viscosity solutions of Hamilton-Jacobi equations. This approach provides a mathematical framework in which we can prove the well-posedness of the problem (proof of the existence of a solution and characterization of all solutions)...

The immune response HLA class II DRB1 gene provides the major genetic contribution to Juvenile Idiopathic Arthritis (JIA), with a hierarchy of predisposing through intermediate to protective effects. With JIA, and the many other HLA associated diseases, it is difficult to identify the combinations of biologically relevant amino acid (AA) residues directly involved in disease due to the high lev...

PURPOSE Recent studies have suggested that renal phosphate leakage and the associated phosphaturia are significant underlying causes of calcium urolithiasis. The aims of this study were to assess whether phosphaturia relates to urinary metabolic abnormalities and recurrent stone formation. MATERIALS AND METHODS A database of patient histories and urine chemistries was analyzed for 1,068 conse...