René Marcelino Abritta Teixeira

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Affective analysis of video content has greatly increased the possibilities of the way we perceive and deal with media. Different kinds of strategies have been tried, but results are still opened to improvements. Most of the problems come from the lack of standardized test set and real affective models. In order to cope with these issues, in this paper we(More)
Many algorithms and works have helped in the understanding and development of affective analysis of films. In spite of the progress made up to now, it is still not very precise how the low-level features of movies shape the resulting affective state of the viewer. In this work we evaluate different visual features and investigate how they impact the(More)
A meta-analysis was conducted to develop a model for predicting dry matter intake (DMI) in dairy cows under the tropical conditions of Brazil and to assess its adequacy compared with 5 currently available DMI prediction models: Agricultural and Food Research Council (AFRC); National Research Council (NRC); Cornell Net Carbohydrate and Protein System (CNCPS;(More)
Computational photography has redefined the possibilities of conventional photography. New effects can be obtained by mixing modified hardware with software. In this paper we present the basis of a theoretical framework for a computational camera. By using coded apertures, the framework is able to multiplex images of a scene and simultaneously acquire them.(More)
The use of networked light bulbs is proposed in order to modify the focus of attention, defined based on salience maps, of a video being displayed on a screen. The proposed system was evaluated by using four networked lamps positioned behind a television display. The lamps were controlled by the system according to the visual features of the video. By using(More)
Coded apertures provide enhanced noise characteristics to lens-less imaging systems. Similar characteristics have been suggested for traditional cameras. Four experiments were conducted to investigate the amount of noise reduction provided by coded apertures when used in photographic cameras. They focus on the effects of coding mask sizes, positioning,(More)
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