Search Results - "Zaccarin, A."

Learning and Removing Cast Shadows through a Multidistribution Approach by Martel-Brisson, N., Zaccarin, A.

“…Moving cast shadows are a major concern for foreground detection algorithms. The processing of foreground images in surveillance applications typically…”
Get full text

New fast algorithms for the estimation of block motion vectors by Liu, B., Zaccarin, A.

“…Two algorithms for block motion estimation that produce performance similar to that of exhaustive search but with computation reduced by a factor of 8 or 16…”
Get full text

A novel approach for coding color quantized images by Zaccarin, A., Liu, B.

“…An approach to the lossy compression of color images with limited palette that does not require color quantization of the decoded image is presented. The…”
Get full text

Automatic setup deviation measurements with electronic portal images for pelvic fields by Girouard, L. M., Pouliot, J., Maldague, X., Zaccarin, A.

“…The purpose of this work was to develop a fully automatic tool for the detection of setup deviation for small pelvic fields using, in external beam…”
Get full text

New rule-based framework for post-processing merging in video sequence segmentation by Martel, L., Zaccarin, A.

“…This paper addresses the problem of semantic object segmentation in a video sequence for multimedia applications. It presents a new framework to generate a…”
Get full text

Adaptive thresholding for detection of nonsignificant vectors in noisy image sequences by Martel, L., Zaccarin, A.

“…In noisy image sequences, block matching motion estimation generates erroneous motion vectors since the algorithm tries to correlate noise. We present an…”
Get full text

Moving cast shadow detection from a Gaussian mixture shadow model by Martel-Brisson, N., Zaccarin, A.

“…Moving cast shadows are a major concern for foreground detection algorithms. Processing of foreground images in surveillance applications typically requires…”
Get full text

Fast algorithms for block motion estimation by Zaccarin, A., Liu, B.

“…Two fast algorithms are presented to reduce the computational complexity of block motion estimation. Previously proposed fast algorithms reduce the number of…”
Get full text

A system for reliable dissolve detection in videos by Lienhart, R., Zaccarin, A.

“…Automatic shot boundary detection has been an active research area for nearly a decade and has led to high performance detection algorithms for hard cuts,…”
Get full text

Kernel-based learning of cast shadows from a physical model of light sources and surfaces for low-level segmentation by Martel-Brisson, N., Zaccarin, A.

“…In background subtraction, cast shadows induce silhouette distortions and object fusions hindering performance of high level algorithms in scene monitoring. We…”
Get full text

Scene break detection and classification using a block-wise difference method by Yazdi, M., Zaccarin, A.

“…We introduce a new approach to the detection and the classification of effects in video sequences. We deal with effects such as cuts, fades, dissolves, and…”
Get full text

Coding of interlaced sequences using a decoder-based adaptive deinterlacer by Zaccarin, A., Liu, B.

“…Motion-compensated coding techniques developed for progressively scanned sequences are not entirely suitable for coding interlaced sequences. Direct approaches…”
Get full text

Automated seed detection and three-dimensional reconstruction. II. Reconstruction of permanent prostate implants using simulated annealing by Tubic, Dragan, Zaccarin, André, Beaulieu, Luc, Pouliot, Jean

“…We present an algorithm, based on simulated annealing, for automatic seed matching and three-dimensional spatial coordinate reconstruction using either three…”
Get full text

Automated seed detection and three-dimensional reconstruction. I. Seed localization from fluoroscopic images or radiographs by Tubic, Dragan, Zaccarin, André, Pouliot, Jean, Beaulieu, Luc

“…An automated procedure for the detection of the position and the orientation of radioactive seeds on fluoroscopic images or scanned radiographs is presented…”
Get full text

Transform coding of color images with limited palette size by Zaccarin, A., Liu, B.

“…An approach for the compression of color images with limited palette size that does not require color quantization of the decoded image is presented. The…”
Get full text

Automatic detection of three radio-opaque markers for prostate targeting using EPID during external radiation therapy by Pouliot, S., Zaccarin, A., Laurendeau, D., Pouliot, J.

“…External radiotherapy is an option used for the treatment of the prostate cancer. In order to achieve the best results, radiation must be precisely delivered…”
Get full text

Interframe coding using deformable triangles of variable size by Yazdi, M., Zaccarin, A.

“…Motion compensation using deformable triangle patches has been successfully used for low bit rate coding of videophone sequences. They were also shown to be…”
Get full text

Transmission of the color information using quad-trees and segmentation-based approaches for the compression of color images with limited palette by Tremblay, M.P., Zaccarin, A.

“…The compression of color images is usually performed independently along each of the 3 axis of a luminance-chrominance color space. When applied to images…”
Get full text

Adaptive deinterlacing applied to HDTV coding by Zaccarin, A., Liu, B.

“…Results of a comparison study of different approaches for block-motion-compensated coding of interlaced sequences are presented. An approach is then proposed…”
Get full text

An interactive Java applet for teaching discrete-time system theory by Tardif, P.-M., Zaccarin, A.

“…In this paper we present a Java applet used for teaching discrete-time system theory to electrical and computer engineering students. The objective of the…”
Get full text