Featured Research

from universities, journals, and other organizations

Swarm Approach To Photography Improves Contrast And Detail In Digital Photos

Date:
February 3, 2008
Source:
Inderscience Publishers
Summary:
A new approach to cleaning up digital photos and other images has been developed by researchers in the UK and Jordan. The method uses a computer algorithm known as a PSO to intelligently boost contrast and detail in an image without distorting the underlying features.

A new approach to cleaning up digital photos and other images has been developed by researchers in the UK and Jordan. The method uses a computer algorithm known as a PSO (Particle Swarm Optimization) to intelligently boost contrast and detail in an image without distorting the underlying features.

Malik Braik and Alaa Sheta of the Department of Information Technology, at Al-Balqa Applied University, in Salt, Jordan, working with Aladdin Ayesh in the Division of Computer Engineering, at De Montfort University, Leicester, UK, explain that the Particle Swarm Optimization (PSO) algorithm represents an entirely new approach to solving all kinds of optimization problems. PSO has recently been used in computer science and electrical engineering.

The roots of the PSO algorithms lie in Swarm Intelligence paradigm which is inspired by models of living systems, artificial life (A-life) in general, and by theories of how and why birds flock, why schools of fish behave the way they do and in particular what controls swarming insects. Despite its potential it relies on only simple mathematics and does not need powerful computers to run, which means software applications based on PSO would not be limited only to academic researchers and those with access to supercomputers.

There have been several approaches to image enhancement developed by image manipulation software companies and others. However, none comes up to the standards of the kind of image enhancement often seen in fiction, where a blurry distorted image on a screen is rendered pin-sharp at the click of a mouse. PSO, however, takes image enhancement a step closer to this ideal.

PSO is based on a mathematical model of the social interactions of swarms. The algorithm treats each version of an image as an individual member of the swarm and makes a single, small adjustment to contrast levels, edge sharpness, and other image parameters. The algorithm then determines whether the new members of the swarm are better or worse than the original according to an objective fitness criterion.

"The objective of the algorithm is to maximize the total number of pixels in the edges, thus being able to visualize more details in the images," explain the researchers. Such enhancement might be useful in improving snapshots of CCTV quality for identification of individuals or vehicle number plates, it might also have application in improving images produced with lower quality cameras, such as camera phones, that are required for use in publishing or TV where image quality standards are usually higher.

The process of enhancing step by step is repeated to create a swarm of images in computer memory which have been graded relative to each other, the fittest end up at the front of the swarm until a single individual that is the most effectively enhanced.

"The obtained results using grey scale images indicate that PSO is better than other approaches in terms of the computational time and both the objective evaluation and maximization of the number of pixels in the edges of the tested images," they add.

This research was published recently in Inderscience's International Journal of Innovative Computing and Applications.


Story Source:

The above story is based on materials provided by Inderscience Publishers. Note: Materials may be edited for content and length.


Cite This Page:

Inderscience Publishers. "Swarm Approach To Photography Improves Contrast And Detail In Digital Photos." ScienceDaily. ScienceDaily, 3 February 2008. <www.sciencedaily.com/releases/2008/02/080201093341.htm>.
Inderscience Publishers. (2008, February 3). Swarm Approach To Photography Improves Contrast And Detail In Digital Photos. ScienceDaily. Retrieved July 23, 2014 from www.sciencedaily.com/releases/2008/02/080201093341.htm
Inderscience Publishers. "Swarm Approach To Photography Improves Contrast And Detail In Digital Photos." ScienceDaily. www.sciencedaily.com/releases/2008/02/080201093341.htm (accessed July 23, 2014).

Share This




More Computers & Math News

Wednesday, July 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Robot Parking Valet Creates Stress-Free Travel

Robot Parking Valet Creates Stress-Free Travel

AP (July 23, 2014) 'Ray' the robotic parking valet at Dusseldorf Airport in Germany lets travelers to avoid the hassle of finding a parking spot before heading to the check-in desk. (July 23) Video provided by AP
Powered by NewsLook.com
Six Indicted in StubHub Hacking Scheme

Six Indicted in StubHub Hacking Scheme

AP (July 23, 2014) Six people were indicted Wednesday in an international ring that took over more than 1,000 StubHub users' accounts and fraudulently bought tickets that were then resold. (July 23) Video provided by AP
Powered by NewsLook.com
The Reviews Are In For The Amazon Fire Phone

The Reviews Are In For The Amazon Fire Phone

Newsy (July 23, 2014) Amazon's first smartphone, the Fire Phone, is set to ship this week, and so far the reviews have been pretty mixed. Video provided by Newsy
Powered by NewsLook.com
Bigger Apple Phone, Bigger Orders

Bigger Apple Phone, Bigger Orders

Reuters - Business Video Online (July 22, 2014) Apple is asking suppliers to make 70 to 80 million units of its new larger screen iPhone, a lot more initially than its current model. Fred Katayama reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins