Spectral Textures are rendered by multi-layer texturing, where each layer provides a certain band of spatial frequencies for the final texture. Transparency channels introduce statistical dependencies between the layers. Figures 1 shows series of screenshots that illustrate the multilayer approach of spectral texturing. The left column shows the single texture layers, increasing in scale from t...

This paper presents a method to determine efficient scanpatterns for spin images using robust multivariate regression. A large dataset is generated using scan-patterns with random radial scanlines through an oriented point and determining the corresponding classification performance. Eight features are chosen, which are used as predictor variables for a multivariate least trimmed squares regres...

* Corresponding author. E-mail addresses: [email protected], grift@ 1537-5110/$ e see front matter a 2011 IAgrE doi:10.1016/j.biosystemseng.2011.12.007 The stem diameter of Miscanthus giganteus (MxG) is an important parameter in the measurement of stand volume and yield. To measure the diameters of MxG stems automatically, a vision-based diameter sensor was developed, consisting of a camera an...

The new interface of the Web of Science (of Thomson Reuters) enables users to retrieve sets larger than 100,000 documents in a single search. This makes it possible to compare publication trends for China, the USA, EU-27, and smaller countries, with the data in the Scopus database of Elsevier. China no longer grew exponentially during the 2000s, but linearly. Contrary to previous predictions on...

Coefficient of determination (R (2)) and its leave-one-out cross-validated analogue (denoted by Q (2) or R cv (2) ) are the most frequantly published values to characterize the predictive performance of models. In this article we use R (2) and Q (2) in a reversed aspect to determine uncommon points, i.e. influential points in any data sets. The term (1 - Q (2))/(1 - R (2)) corresponds to the ra...