The aim of this study is to evaluate three different strategies to improve classification accuracy in a highly fragmented semiarid area. i) Using different classification algorithms: Maximum Likelihood, Random Forest, Support Vector Machines and Sequential Maximum a Posteriori, with parameter optimisation in the second and third cases; ii) using different feature sets: spectral features, spectr...

The variations in the chemical composition and micro-texture of a mineral from core to rim allow sequencing formation magma chamber processes interpretation which texture might have been formed by process. In this study, textural zoning plagioclases, are significant recorder processes, some enclave-containing andesite (calc-alkaline) basalts Karapınar Karacadağ Volcanic Complex, were examined t...

AIM To study the influence of dual time point 18F-FDG PET/CT in textural features and SUV-based variables and their relation among them. METHODS Fifty-six patients with locally advanced breast cancer (LABC) were prospectively included. All of them underwent a standard 18F-FDG PET/CT (PET-1) and a delayed acquisition (PET-2). After segmentation, SUV variables (SUVmax, SUVmean, and SUVpeak), me...

Although cooked potato tuber texture is an important trait that influences consumer preference, a detailed understanding of tuber textural properties at the molecular level is lacking. Previous work has identified tuber pectin methyl esterase activity (PME) as a potential factor impacting on textural properties. In this study, tuber PME isoform and gene expression profiles have been determined ...

Motivated by the success of speech characteristics representation by color attributes, we analyzed the cross-modal sentiment correlations between voice source characteristics and textural image characteristics. For the analysis, we employed vowel sounds with representative three phonation differences (modal, creaky and breathy) and 36 texture images with 36 semantic attributes (e.g., banded, cr...

Tertiary andesitic basalts of the Sirjan area, Urmieh-Dokhtar Magmatic Arc, Iran, contain plagioclase phenocrysts enclosed in a matrix of amphibole, clinopyroxene and rare olivine crystals. Textural and compositional evidence suggests two significantly different types of plagioclase phenocrysts occur in the andesitic basalts. The most common type of plagioclase phenocrysts have zoning patterns ...

OBJECTIVE Localized texture analysis of breast tissue on mammograms is an issue of major importance in mass characterization. However, in contrast to other mammographic diagnostic approaches, it has not been investigated in depth, due to its inherent difficulty and fuzziness. This work aims to the establishment of a quantitative approach of mammographic masses texture classification, based on a...

The coefficients of a weighted summation of red, green and blue intensities are shown to effect textural characteristics. Thus multispectral images can be mutated into forms that facilitate their discrimination by a given set of statistical texture measures.

In character recognition, zoning based feature extraction is one of the most popular methods. The character image is divided into predefined number of zones and a feature is computed from each of these zones. Usually, this feature is based on the pattern (black) pixels contained in that zone. Some of such features are average pixel density, sum squared distance, histogram. But in such features,...