30 citations · 116 across the 11 of their papers we have counts for
10 papers · 1 filter
Oriented bounding boxes using multiresolution contours for fast interference detection of arbitrary geometry objects
L. A. Rivera, Vania V. Estrela, P. C. P. Carvalho
Interference detection of arbitrary geometric objects is not a trivial task due to the heavy computational load imposed by implementation issues. The hierarchically structured boun…
Error concealment by means of motion refinement and regularized Bregman divergence
Alessandra M. Coelho, Vania V. Estrela, Felipe P. do Carmo +1
This work addresses the problem of error concealment in video transmission systems over noisy channels employing Bregman divergences along with regularization. Error concealment in…
Estimating motion with principal component regression strategies
Felipe P. do Carmo, Vania Vieira Estrela, Joaquim Teixeira de Assis
In this paper, two simple principal component regression methods for estimating the optical flow between frames of video sequences according to a pel-recursive manner are introduce…
Regularized Pel-Recursive Motion Estimation Using Generalized Cross-Validation and Spatial Adaptation
Vania V. Estrela, Luis A. Rivera, Paulo C. Beggio +1
The computation of 2-D optical flow by means of regularized pel-recursive algorithms raises a host of issues, which include the treatment of outliers, motion discontinuities and oc…
Adaptive mixed norm optical flow estimation
Vania V. Estrela, Matthias O. Franz, Ricardo T. Lopes +1
The pel-recursive computation of 2-D optical flow has been extensively studied in computer vision to estimate motion from image sequences, but it still raises a wealth of issues, s…
EM-Based Mixture Models Applied to Video Event Detection
Alessandra Martins Coelho, Vania V. Estrela
Surveillance system (SS) development requires hi-tech support to prevail over the shortcomings related to the massive quantity of visual information from SSs. Anything but reduced…