A GENERALIZED LAPLACIAN PYRAMID AIMED AT IMAGE COMPRESSION

Costin-Anton Boiangiu (), Marius-Vlad Cotofana (), Alexandru Naiman () and Cristian Lambru ()
Additional contact information
Costin-Anton Boiangiu: Politehnica University of Bucharest, Bucharest, Romania
Marius-Vlad Cotofana: Politehnica University of Bucharest, Bucharest, Romania
Alexandru Naiman: Politehnica University of Bucharest, Bucharest, Romania
Cristian Lambru: Politehnica University of Bucharest, Bucharest, Romania

Journal of Information Systems & Operations Management, 2016, vol. 10, issue 2, 327-335

Abstract: Image resampling is a process that involves a trade-off, between efficiency, smoothness and sharpness. Nevertheless, it is a process that we encounter frequently in our digital world: on the internet, for printing and scanning, in photography and television and even in astronomy, when observing distant galaxies. Image resampling is a mathematical technique used to create a new image, from the original one, which has a different width and/or height in pixels. Reducing the size of an image is called downsampling, while increasing its size is called upsampling. Upsampling an image, increases the number of pixels, but details that were not in the original one, cannot be created. As a result, images become blurry the more they get enlarged. When images are downsampled, information in the original images has to be discarded. This makes the new image appear sharper, even though it contains less information. As a downside, if an image is downsampled and upsampled, some of the original details will not get recovered.

Date: 2016
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.rebe.rau.ro/RePEc/rau/jisomg/WI16/JISOM-WI16-A05.pdf (application/pdf)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:rau:jisomg:v:10:y:2016:i:2:p:327-335

Access Statistics for this article

More articles in Journal of Information Systems & Operations Management from Romanian-American University Contact information at EDIRC.
Bibliographic data for series maintained by Alex Tabusca ().