Fabiana Rodrigues Leta

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The vocal cords play an important role on voice production. Air coming from the lungs is forced through the narrow space between the two vocal cords that are set in motion in a frequency that is governed by the tension of the attached muscles. The motion of the vocal cords changes the type of flow, that comes from the lungs, to pulses of air, and as the(More)
This paper presents a methodology for roughness analysis based on surface characteristics of images obtained from optical and electronic microscopes. Texture analysis has been widely used in different fields, such as medical image analysis, visual interpretation of remote sensing images, image search and industrial quality inspection of manufactured(More)
—This paper explores the use of an hierarchical neuro-fuzzy model for image classification of macroscopic rock texture. The relevance of this study is to help Geologists in diagnosing and planning the oil reservoir exploitation. The same approach can be also applied to metals, in order to classify the different types of materials based on their grain(More)
Printed Circuit Board (PCB) is the most important component of the electronic industry and thus, the electronic mass-production facilities make an attempt to achieve Printed Circuit Board with 100% quality assurance. To achieve Printed Circuit Board with 100% quality assurance i. e. to produce zero-defect Printed Circuit Board, inspection method is the(More)
A system for semi-automatic texture segmentation of medical images, consisting of a self-organizing map (SOM) with a set of 16 texture descriptors as possible inputs, is presented. After a manually chosen calibration slice is used to train the SOM, the system can segment all the other slices from the same volume. It allows the selection of different(More)
—This paper presents a system for detecting angular position of warships, using features extraction techniques from acquired digital imaging and artificial neural networks. The used ships images are graphically generated by three-dimensional solid modeling software. Different groups of features are considered. They are obtained from modelled ships at(More)
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