Tag Archives: Siome Goldenstein

User-Centric Coordinates for Applications Leveraging 3-Axis Accelerometer Data

Mobile devices are becoming ubiquitous and, sometimes, even extensions of ourselves. These devices are growing fast in terms of delivered computational power, storage capacity, battery duration, and built-in sensors. Time and again, we see headlines advertising new unforeseen applications leveraging … Continue reading

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RECODists have gotten their Ph.D. Thesis awarded

Two Ph.D. Thesis from RECOD lab have been awarded recently. First, the thesis entitled “Multi-Analysis Techniques for Digital Image Forensics” from Anselmo Castelo Branco Ferreira under the supervision of Prof. Anderson Rocha and co-supervision of Prof. Jefersson dos Santos won … Continue reading

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New dissimilarity measures for image phylogeny reconstruction

Image phylogeny is the problem of reconstructing the structure that represents the history of generation of semantically similar images (e.g., near-duplicate images). Typical image phylogeny approaches break the problem into two steps: (1) estimating the dissimilarity between each pair of … Continue reading

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Temporal robust features for violence detection

Automatically detecting violence in videos is paramount for enforcing the law and providing the society with better policies for safer public places. In addition, it may be essential for protecting minors from accessing inappropriate contents on-line, and for helping parents … Continue reading

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Video pornography detection through deep learning techniques and motion information

In this paper, the authors deal with a growing issue of our connected society: automated sensitive media (pornographic, violent, gory, etc.) filtering. A range of applications has increased societal interest on the problem, e.g., detecting inappropriate behavior via surveillance cameras; … Continue reading

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On the Reconstruction of Text Phylogeny Trees: Evaluation and Analysis of Textual Relationships

In this article, recently accepted at PLOS ONE journal and available as open access, the authors propose a framework for reconstructing text evolutionary trees, aiming at reconstructing the history of modifications that a set of related documents has gone through. … Continue reading

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Ph.D. thesis defense: Daniel Moreira

The RECODist Daniel Henriques Moreira has earned his Ph.D. degree with the thesis entitled “Sensitive-Video Analysis” supervised by Prof. Anderson Rocha, from RECOD, and co-supervised by Prof. Siome Goldenstein.   The abstract is: Sensitive video can be defined as any … Continue reading

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Master and Ph.D. defenses: Karina Bogdan and Laurindo Britto Neto, respectively

The RECODists Karina Olga Maizman Bogdan and Laurindo de Sousa Britto Neto have earned their master’s and Ph.D. degrees, respectively. Congratulations! Karina presented the dissertation entitled “Multiple Tracklet Matching under Severe Occlusions” supervised by Prof. Siome Goldenstein. Laurindo presented the … Continue reading

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PSQP – Puzzle Solving by Quadratic Programming

The traditional Jigsaw Puzzle is the problem of assembling several non-overlapping puzzle pieces that can be combined in order to obtain a single image. Despite that fact it is a NP-complete problem, much effort has been devoted to solve the … Continue reading

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Visualizing and Interacting with Kernelized Data

Kernel methods have emerged as a versatile mechanism for data classification, clustering and pattern recognition. Understanding of the mapping performed by a kernel simplifies the choice and the design of kernels as well as the fine-tuning of kernel parameters, thus … Continue reading

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