Given the denotational semantics of a programming language, we describe a general method to extend the language in a way that it supports a form of superimposition — just in the sense of aspect-oriented programming. In the extended language, the programmer can superimpose additional or alternative functionality (aka advice) onto points along the execution of a program. Adding superimposition to...

Accurate quantification of variation in tooth shape is important in studies of dental development, which typically have involved measuring distances between subjectively identified landmarks, key points of correspondence on teeth. An established statistical framework now exists for the analysis of shape when objects are represented as configurations of landmark coordinates; allowing work with t...

The unique facial appearance associated with fetal alcohol syndrome (FAS) is emphasised in diagnosis, which relies, in part, on the comparison of linear measurements of facial features to population norms. We explore the use of shape analysis as an alternative diagnostic tool for FAS. This paper implements General Procrustes Analysis to compare the FAS facial shape with the normal facial shape....

In Western countries, the growing population of seniors brings us to think about new healthcare systems to ensure the safety of elderly people at home. Falls are one of the greatest risk for seniors living alone. Computer vision provides a promising solution to analyze people behavior and detect some unusual events like falls. In this paper, we propose to detect falls by analyzing the human sha...

The configuration matrix of a set of labeled landmarks is one the most used shape representations. However, it is well-known that the configuration matrix is not invariant under translation, scaling and rotation. This problem is revisited in this work where a local tangent shape space characterization at a reference shape is obtained as the null space of the subspace spanned by the reference sh...

A current challenge in augmented reality applications is the accurate superimposition of synthetic objects on real objects within the environment. This challenge is heightened when the real objects are in motion and/or are nonrigid. In this article, we present a robust method for realtime, optical superimposition of synthetic objects on dynamic rigid and simple-deformable real objects. Moreover...

A Philips DVI 2 apparatus* was used, and the technique has been described [8] . A total of 264 carotid bifurcations were studied retrospectively , 130 with and 134 without cardiac gating and postprocessing with pixel shift (Fig . 1 ). Only patients without renal failure or major cardiac disease were included. The ideal study of an area of interest consisted of two or more views with no movement...

Distances matrices are traditionally analyzed with statistical methods that represent distances as maps such as Metric Multidimensional Scaling (MDS), Generalized Procrustes Analysis (GPA), Individual Differences Scaling (INDSCAL), and DISTATIS. MDS analyzes only one distance matrix at a time while GPA, INDSCAL and DISTATIS extract similarities between several distance matrices. However, none o...

Angiosperm leaves are extremely variable in form while predominantly maintaining the function of the primary photosynthetic organ of the plant. Changes in leaf form can result from myriad physiological processes which may be influenced by ecology, physical stimuli, phylogeny, or other factors. In studying the development of divergent leaf forms among closely related species, conserved morpholog...