Browsing School of Engineering by Author "PITIE, FRANCOIS"
Now showing items 1-15 of 15
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Advanced video debanding
PITIE, FRANCOIS; KOKARAM, ANIL (ACM, 2014)High efficiency video coding has made it possible to stream video over bandwidth constrained communication networks. Depending on bit rate requirements, a video encoder sacrifices some image de- tails which can then ... -
Blotch and scratch removal in archived film using a semi-transparent corruption model and a ground-truth generation technique
PITIE, FRANCOIS (Springer, 2013)This paper has two main contributions. The first is a Bayesian framework for removing two common types of degradations on video known as blotches and line scratches. Most removal techniques assume complete obliteration of ... -
A Comparative Error Analysis of Audio-Visual Source Localization
BOLAND, FRANCIS MORGAN; PITIE, FRANCOIS; KOKARAM, ANIL CHRISTOPHER (2008)This paper examines the accuracy of audio-video based localization using multiple cameras and multi-microphones. Covariance mapping theory is used to determine the accuracy of audio and video based localization. Both ... -
Content Controlled Image Representation for Sports Streaming
KOKARAM, ANIL; PITIE, FRANCOIS (Suvisoft, 2005)Content based analysis has traditionally been posed in the context of identifying some material in response to a user query. This paper illustrates that given a content based analysis process that can identify semantic ... -
Electronic slide matching and enhancement of a lecture video
KOKARAM, ANIL CHRISTOPHER; PITIE, FRANCOIS (2007)This paper presents an automatic method to enhance video presentations for distance learning applications. From a material recorded by a fixed, non professional camera, the system matches the slides displayed during the ... -
Extraction of Non-Binary Blotch Mattes.
PITIE, FRANCOIS; KOKARAM, ANIL CHRISTOPHER; AHMED, MOHAMED (IEEE, 2009)Automated blotch removal is important in film restoration and typically involves a detection/interpolation step. Current algorithms model the corruption as a binary mixture between the original, clean images and an ... -
Feature-Assisted Sparse to Dense Motion Estimation using Geodesic Distances.
RING, DANIEL; PITIE, FRANCOIS (IEEE, 2009)Large motion displacements in image sequences are still a problem for most motion estimation techniques. Progress in feature matching allows to establish robust correspondences between images for a sparse set of points. ... -
Gradient Based Dominant Motion Estimation with Integral Projections for Real Time Video Stabilisation,
KOKARAM, ANIL; PITIE, FRANCOIS (2004)This paper presents a new expression of the relationship between integral projections and motion in an image pair. The resulting new multiresolution gradient based approach is used to estimate dominant motion in image ... -
The linear Monge-Kantorovitch linear colour mapping for example-based colour transfer
KOKARAM, ANIL CHRISTOPHER; PITIE, FRANCOIS (2007)A common task in image editing is to change the colours of a picture to match the desired colour grade of another picture. Finding the correct colour mapping is tricky because it involves numerous interrelated operations, ... -
Localised deflicker of moving images
KOKARAM, ANIL CHRISTOPHER; PITIE, FRANCOIS (2006)Brightness fluctuations in sequences are a typical impairment in archive and modern footage. These fluctuations are mainly temporal but they may also present spatial variations across each individual frame. Current deflicker ... -
N-dimensional probability density function transfer and its aplication to colour transfer
KOKARAM, ANIL; PITIE, FRANCOIS; DAHYOT, ROZENN (2005)This article proposes an original method to estimate a continuous transformation that maps one N-dimensional distribution to another. The method is iterative, non-linear, and is shown to converge. Only 1D marginal distribution ... -
Off-line multiple object tracking using candidate selection and the viterbi algorithm
KOKARAM, ANIL; PITIE, FRANCOIS (2005)This paper presents a probabilistic framework for off-line multiple object tracking. At each timestep, a small set of deterministic candidates is generated which is guaranteed to contain the correct solution. Tracking an ... -
User-assisted reflection detection and feature point tracking
KOKARAM, ANIL; PITIE, FRANCOIS (2013)Reflections in image sequences violate the single layer model used by most current image processing techniques. As a result reflec- tions cause many techniques to fail e.g. detection, tracking, motion estimation, etc. ... -
User-assisted sparse stereo-video segmentation
KOKARAM, ANIL; PITIE, FRANCOIS (2013)User-assisted Sparse Stereo-video Segmentation Félix Raimbault, François Pitié and Anil Kokaram Sigmedia Group Dept. of Electronic and Electrical Engineering Trinity College Dublin, Ireland {raimbauf, fpitie, ... -
Using One Graph-Cut to Fuse Multiple Candidate Maps in Depth Estimation.
PITIE, FRANCOIS (2009)Graph-cut techniques for depth and disparity estimations are known to be powerful but also slow. We propose a graph-cut framework that is able to estimate depth maps from a set of candidate values. By employing a ...