Texture measurement for simple geometric surfaces is well established. Many surface filtration techniques using Fourier, Gaussian, wavelets ... etc, have been proposed over the past decades. These filtration techniques cannot be applied to today’s complex freeform surfaces, which have nonEuclidean geometries in nature, without distortion of the results. Introducing the lifting scheme open the o...

This note focuses on the problem of representing convex sets as projections of the cone of positive semidefinite matrices, in the particular case of sets generated by bivariate polynomials of degree four. Conditions are given for the convex hull of a plane quartic to be exactly semidefinite representable with at most 12 lifting variables. If the quartic is rationally parametrizable, an exact se...

Manual material handling (MMH) tasks were evaluated and compared under different lifting conditions. For the theoretical evaluations, a two-dimensional sagittally symmetric human-body model was established to compute the moment and joint load time histories for MMH tasks for a variety of different lift specifications and constraints such as lifting durations, loads, and modes. Nonlinear control...

Content based image retrieval technology has been proposed to benefit not only management of increasingly large image collection, but also to aid clinical care, biomedical research and education. In this paper, lifting scheme is proposed for content based retrieval method for diagnosis aid in medical field. Content-based image retrieval (CBIR) techniques could be valuable to radiologists in ass...

We investigate central issues such as invertibility, stability, synchronization, and frequency characteristics for nonlinear wavelet transforms built using the lifting framework. The nonlinearity comes from adaptively choosing between a class of linear predictors within the lifting framework. We also describe how earlier families of nonlinear filter banks can be extended through the use of pred...

OBJECTIVE To evaluate if chronic low back pain patients perform manual material handling tasks differently from control subjects. DESIGN Comparative study using a repeated measures design. BACKGROUND No study evaluated the lifting technique of back pain patients relative to control subjects during free style lifting and lowering tasks. Previous findings suggest that lowering would be more h...

This paper incorporates the directionally spatial prediction (DSP) into the conventional lifting-based wavelet transforms and proposes a novel, efficient and flexible lifting structure (referred as DSP-lifting hereafter). Each lifting stage can be performed at the direction, where pixels have a strong correlation, rather than always at the horizontal or vertical direction. The proposed DSP enab...