Among the many types of noise observed in seismic land acquisition there is one produced by surface waves called Ground Roll that is a particular type of Rayleigh wave which characteristics are high amplitude, low frequency ...

Feature extraction and the method utilized for data processing are fundamental parts of the digital image classification process. Therefore, in this work, the classification capacity of a convolutional neural network was ...

Oil prospecting is one of most complex and important features of oil industry Direct prospecting methods like drilling well logs are very expensive, in consequence indirect methods are preferred. Among the indirect prospecting ...

In computer-aided diagnosis one of the crucial steps to classify suspicious lesions is the extraction of features. Texture analysis methods have been used in the analysis and interpretation of medical images. In this work ...

A curvelet transform method for phase-map denoising is presented.

Colorectal cancer is one of the most common types of cancer according to worldwide incidences statistics. The correct diagnosis of this lesion leads to the indication of the most adequate treatments for cancer-affected ...

In this thesis, we study the application of spectral representations to the solution of problems in seismic exploration, the synthesis of fractal surfaces and the identification of correlations between one-dimensional ...

Problemas eletromagnéticos em alta freqüência são problemas computacionais atraentes e desafiadores a serem resolvidos. Embora tenham sido realizado esforços significativos e melhorias ao longo das duas últimas décadas, ...

In this work, a method is proposed to analyze the influence of color normalization in the classification lymphoma images. The approach combines multidimensional fractal techniques, curvelet transforms and Haralick features. ...