OBJECTIVE The purpose of this study was to develop superimposition method on the lower arch using 3-dimensional (3D) cone beam computed tomography (CBCT) images and orthodontic 3D digital modeling. METHODS Integrated 3D CBCT images were acquired by substituting the dental portion of 3D CBCT images with precise dental images of an orthodontic 3D digital model. Images were acquired before and a...

BACKGROUND Techniques for comparison and optimum superimposition of protein structures are indispensable tools, providing the basis for statistical analysis, modeling, prediction and classification of protein folds. Observed similarity of structures is frequently interpreted as an indication of evolutionary relatedness. A variety of advanced techniques are available, but so far the important is...

Morphometrics, the quantitative analysis of shape, is used by craniofacial researchers to study abnormalities in human face shapes. Most of the work in craniofacial morphometrics uses landmark points that are manually marked on 3D face data and processed via a generalized Procrustes analysis. For large data sets this manual process is very time-consuming. Dense sets of pseudo-landmarks have als...

His famous dissertation, published in 1947, The Face in Profile. An Anthropological X-ray Investigation on Swedish Children and Conscripts, is an outstanding contribution. That monograph became the classic example for numerous scholars to follow so that, 25 years later, a second printing was necessary. research fellow and guest lecturer at Northwestern University in Chicago, Illinois. In 1958 h...

Spreadsheets have become very popular tools for analyzing and visualizing data from business and science. To better understand human-spreadsheet interaction, we explore readers’ information models, but in contrast to most studies we focus on spreadsheet readers rather than spreadsheet authors. We conducted a study using the repertory grid technique and analyzed the result with the help of a Gen...

This paper proposes a novel algorithm for individual recognition by gait. The method of Procrustes shape analysis is used to produce Procrustes Mean Shape (PMS) as a compressed representation of gait sequence. PMS is adopted as the gait signature in this paper. Instead of using the Procrustes mean shape distance as a similarity measure, we introduce shape context descriptor to measure the simil...

Heterochronic studies compare ontogenetic trajectories of an organ in different species: here, the skulls of common chimpanzees and modern humans. A growth trajectory requires three parameters: size, shape, and ontogenetic age. One of the great advantages of the Procrustes method is the precise definition of size and shape for whole organs such as the skull. The estimated ontogenetic age (denta...