Browsing Institutt for informasjonssikkerhet og kommunikasjonsteknologi by Subject "VDP::Mathematics and natural science: 400::Information and communication science: 420::Simulation, visualization, signal processing, image processing: 429"
Now showing items 21-35 of 35
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One-shot multispectral color imaging with a stereo camera
(Proceedings of SPIE;7876, Journal article; Peer reviewed, 2011)Multispectral color imaging is a promising technology, which can solve many of the problems of traditional RGB color imaging. However, it still lacks widespread and general use because of its limitations. State of the art ... -
Predicting the Performance of a Spatial Gamut Mapping Algorithm
(Proceedings of SPIE;7241, Journal article; Peer reviewed, 2009)Gamut mapping algorithms are currently being developed to take advantage of the spatial information in an image to improve the utilization of the destination gamut. These algorithms try to preserve the spatial informa- ... -
Real-time people counting system using a single video camera
(Proceedings of SPIE;6811, Journal article; Peer reviewed, 2008)There is growing interest in video-based solutions for people monitoring and counting in business and security applications. Compared to classic sensor-based solutions the video-based ones allow for more versatile ... -
Regression based characterization of color measurement instruments in printing applications
(Proceedings of SPIE;7866, Journal article; Peer reviewed, 2011)In the context of print quality and process control colorimetric parameters and tolerance values are clearly defined. Calibration procedures are well defined for color measurement instruments in printing workflows. Still, ... -
Simulation of film media in motion picture production using a digital still camera
(Proceedings of SPIE;7242, Journal article; Peer reviewed, 2009)The introduction of digital intermediate workflow in movie production has made visualization of the final image on the film set increasingly important. Images that have been color corrected on the set can also serve as a ... -
Spatial Arrangement of Color Filter Array for Multispectral Image Acquisition
(Proceedings of SPIE;7875, Journal article; Peer reviewed, 2011)In the past few years there has been a significant volume of research work carried out in the field of multispectral image acquisition. The focus of most of these has been to facilitate a type of multispectral image ... -
Spatial Nonuniformity of Color Features in Projection Displays: A Quantitative Analysis
(Journal article; Peer reviewed, 2010)In this article, the authors investigate and study the color spatial uniformity of projectors. A common assumption in previous works is to consider that only the luminance is varying along the spatial dimensions. The authors ... -
Spatio-temporal colour correction of strongly degraded movies
(Proceedings of SPIE;7866, Journal article; Peer reviewed, 2011)The archives of motion pictures represent an important part of precious cultural heritage. Unfortunately, these cinematography collections are vulnerable to different distortions such as colour fading which is beyond the ... -
Spatio-Temporal Retinex-Inspired Envelope with Stochastic Sampling: A Framework for Spatial Color Algorithms
(Journal article; Peer reviewed, 2011)The authors present a new framework for algorithms for a wide range of image enhancement and reproduction applications, named STRESS Spatio-Temporal Retinex-inspired Envelope with Stochastic Sampling. The algorithms work ... -
Spatio-Temporal Retinex-like Envelope with Total Variation
(Chapter; Peer reviewed, 2012)Many algorithms for spatial color correction of digital im- ages have been proposed in the past. Some of the most recently developed algorithms use stochastic sampling of the image in or- der to obtain maximum and minimum ... -
Subjective evaluations of example-based, total variation, and joint regularization for image processing
(Journal article; Peer reviewed, 2012)We report on subjective experiments comparing example-based regularization, total variation regularization, and the joint use of both regularizers. We focus on the noisy deblurring problem, which generalizes image supe ... -
Termites: a Retinex implementation based on a colony of agents
(Journal article; Peer reviewed, 2012)This paper describes a novel implementation of the Retinex algorithm with the exploration of the image done by an ant swarm. In this case the purpose of the ant colony is not the optimization of some constraints but is ... -
Using gaze information to improve image difference metrics
(Proceedings of SPIE;6806, Journal article; Peer reviewed, 2008)We have used image difference metrics to measure the quality of a set of images to know how well they predict perceived image difference. We carried out a psychophysical experiment with 25 observers along with a recording ... -
Using metrics to assess the ICC perceptual rendering intent
(Proceedings of SPIE;7867, Journal article; Peer reviewed, 2011)Increased interest in color management has resulted in more options for the user to choose between for their color management needs. We propose an evaluation process that uses metrics to assess the quality of ICC profiles, ... -
Video - based fall detection in elderly’s houses
(Master thesis, 2008)NORSK: Automatisk oppdagellse av en fallende person som blir basert påvideoanalyse er et viktig problem med anvendelse i sikkerhetsområder samt støttende hjemmiljøer og gamlehjem. Bruken av datavisjonssystemer byr en ...