Featured Research

from universities, journals, and other organizations

Computer simulation aimed at minimizing the effects of flooding

Date:
March 29, 2010
Source:
Facultad de Informática de la Universidad Politécnica de Madrid
Summary:
Researchers have developed an application for generating digital elevation models (DEM) and classifying land that can be applied to minimize the effects of flooding. This tool is also useful for studying the best location for public works and residential areas and for controlling and managing water resources.

Taking data from the LIDAR sensor and a digital photogrammetic camera, researchers from the Universidad Politécnica de Madrid's School of Computing have developed an application for generating digital elevation models (DEM) and classifying land that can be applied to minimize the effects of flooding. This tool is also useful for studying the best location for public works and residential areas and for controlling and managing water resources. The Spanish companies Inclam and Heli Ibérica Fotogrametría have partnered this project.

Floods

The numerical simulation of swell waves is a conventional way of providing flood risk maps. Computer applications like these are able to realistically simulate the variable situations of river basins, as they are able to cover all factors, including fluid mechanical properties.

Some of the tools that are now used to develop 2D hydraulic models have a number of defects. For example, many do not properly account for land relief. Others use satellite images whose resolution is unsatisfactory for land classification. Additionally, today's hydraulic applications do not use either specific coefficients, like the Manning roughness coefficient, or data captured by digital cameras during photogrammetic flights for land classification.

On these grounds, applications that integrate the data generated by hydraulic simulation models in geographical information systems need to be developed to output decision making support criteria for land planning and development.

In this context, the Spanish companies Inclam and Stereocarto, in partnership with Dr. Águeda Arquero and Dr. Estíbaliz Martínez, from the Department of Computer Systems Architecture and Technology, and Dr. Marina Álvarez, from the Department of Computer Languages and Systems and Software Engineering, at the UPM's School of Computing, have developed the LHIDRA-MANNING project: an automatic system for calculating the Manning roughness coefficient and digital elevation models from aerial images and LIDAR data for use in hydraulic modelling.

Technical optimization

As part of this project, the partners have optimized some of the traditional remote sensing image classification techniques for application to images taken using a large-format photogrammetic camera that generates a panchromatic (PAN), multi-spectral image with four spectral bands. The image has a spatial resolution of less than 20 cm and a radiometric resolution of 12 bits per channel. Because of the altitude at which the data are collected, the image has a better geometric resolution than images output by satellite sensors and requires no atmospheric correction.

The information supplied by the digital camera is supplemented by data captured by the LIDAR system to calculate the DEM, outputting a better altimetric accuracy (errors of less than 20 cm) and a better spatial resolution (decimetric precision).

This new system was presented at the latest Water Engineering Conference held in Madrid, where LHIDRA-MANNING, the automatic system for calculating the Manning roughness coefficient and digital elevation models from aerial images and LIDAR data for hydraulic modelling, was discussed.


Story Source:

The above story is based on materials provided by Facultad de Informática de la Universidad Politécnica de Madrid. Note: Materials may be edited for content and length.


Cite This Page:

Facultad de Informática de la Universidad Politécnica de Madrid. "Computer simulation aimed at minimizing the effects of flooding." ScienceDaily. ScienceDaily, 29 March 2010. <www.sciencedaily.com/releases/2010/03/100329104420.htm>.
Facultad de Informática de la Universidad Politécnica de Madrid. (2010, March 29). Computer simulation aimed at minimizing the effects of flooding. ScienceDaily. Retrieved October 23, 2014 from www.sciencedaily.com/releases/2010/03/100329104420.htm
Facultad de Informática de la Universidad Politécnica de Madrid. "Computer simulation aimed at minimizing the effects of flooding." ScienceDaily. www.sciencedaily.com/releases/2010/03/100329104420.htm (accessed October 23, 2014).

Share This



More Computers & Math News

Thursday, October 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Chameleon Camouflage to Give Tanks Cloaking Capabilities

Chameleon Camouflage to Give Tanks Cloaking Capabilities

Reuters - Innovations Video Online (Oct. 22, 2014) — Inspired by the way a chameleon changes its colour to disguise itself; scientists in Poland want to replace traditional camouflage paint with thousands of electrochromic plates that will continuously change colour to blend with its surroundings. The first PL-01 concept tank prototype will be tested within a few years, with scientists predicting that a similar technology could even be woven into the fabric of a soldiers' clothing making them virtually invisible to the naked eye. Matthew Stock reports. Video provided by Reuters
Powered by NewsLook.com
Internet of Things Aims to Smarten Your Life

Internet of Things Aims to Smarten Your Life

AP (Oct. 22, 2014) — As more and more Bluetooth-enabled devices are reaching consumers, developers are busy connecting them together as part of the Internet of Things. (Oct. 22) Video provided by AP
Powered by NewsLook.com
Free Math App Is A Teacher's Worst Nightmare

Free Math App Is A Teacher's Worst Nightmare

Newsy (Oct. 22, 2014) — New photo-recognition software from MicroBlink, called PhotoMath, solves linear equations and simple math problems with step-by-step results. Video provided by Newsy
Powered by NewsLook.com
Rate Hike Worries Down on Inflation Data

Rate Hike Worries Down on Inflation Data

Reuters - Business Video Online (Oct. 22, 2014) — Inflation remains well under control according to the latest consumer price index, giving the Federal Reserve more room to keep interest rates low for awhile. Bobbi Rebell 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:

Strange & Offbeat Stories

 

Space & Time

Matter & Energy

Computers & Math

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