Featured Research

from universities, journals, and other organizations

Sugar-cane Fields Observed By Satellite

Date:
May 19, 2009
Source:
Cemagref
Summary:
An automatic analysis method for real-time monitoring of sugar-cane harvesting has been developed. The goal is to design a true decision-aid tool based on the expert knowledge available in the sugar-cane industry, that can also be adapted to other fields such as wine growing and forestry.

An automatic analysis method for real-time monitoring of sugar-cane harvesting has been developed in Montpellier in the framework of a thesis co-directed by Cemagref and Cirad. The goal is to design a true decision-aid tool based on the expert knowledge available in the sugar-cane industry, that can also be adapted to other fields such as wine growing and forestry.

Related Articles


On the island of Réunion, sugar cane, a tall grass, covers over 25 400 hectares. The harvest period can span six months of the year. However, once the cane has been cut, it must be processed in a factory within 48 hours, otherwise decomposition hinders the industrial crystallisation process, among others. Because the factories operate with zero stock and at constant output levels, the companies increasingly use data supplied by satellite-image experts to estimate the progress of harvests on the island.

Question of logic

The goal of the SUCRETTE programme managed by CIRAD is to develop remote-sensing methods and products to meet the needs of the sugar-cane industry. With that in mind, Mahmoud El Hajj developed an automatic analysis method for satellite-image time series implementing the expert knowledge. He used the FisPro software, developed in 2000 by Cemagref and INRA, that can be used to build computer systems based on fuzzy logic. Whereas binary logic uses only 0 and 1, fuzzy logic is capable of grasping the nuances between the two and thus achieve great flexibility. In addition, by assigning linguistic labels to the different numerical values, fuzzy logic can produce rules similar to those used in human thought. As a result, it is possible to create true decision-aid tools whose design is based on human knowledge.

Models to fill in missing links

Another original aspect of the work carried out by the young researcher is a crop-growth model integrating biophysical, climate and agronomic parameters. It is thus possible to estimate the growth of the sugar cane in spite of any missing data in the satellite images. Large cumulonimbus clouds that mask large stretches of terrain and reduce the value of satellite images are no longer a problem. Because sugar-cane growth is rapid, the model is also designed to determine the probability of harvesting having taken place between two images taken at an interval of two or three months. This is useful because, seen from space, a fully grown field ready to be harvested is indistinguishable from a field with new growth, two months after the harvest.

Toward an operational tool

By combining data from satellite-image time series, crop-growth models and expert knowledge, this new method will, in time, make it possible to design a true decision-aid tool. Whereas standard image analysis requires several days of work by an expert, the new tool needs just a few hours to process all sugar-cane fields throughout Réunion. The only element missing today is a graphical interface to facilitate use by an engineering firm.

In the future, it will be possible to expand the method for real-time monitoring of dynamic processes in all types of agricultural and forestry land cover.

Focus on FisPro

The FisPro software serves to build fuzzy-inference systems and then use them to process data, in particular for simulation of physical or biological systems.

The software was developed by Cemagref and INRA for a technology-transfer project funded by the Languedoc-Roussillon region in France, with an industrial partner, the "La Malepère" wine company in Arzens (Aude department, France).

FisPro is available at no cost and may be freely downloaded from http://www.inra.fr/Internet/Departements/MIA/M/fispro/indexfr.html


Story Source:

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


Cite This Page:

Cemagref. "Sugar-cane Fields Observed By Satellite." ScienceDaily. ScienceDaily, 19 May 2009. <www.sciencedaily.com/releases/2009/05/090519152616.htm>.
Cemagref. (2009, May 19). Sugar-cane Fields Observed By Satellite. ScienceDaily. Retrieved January 27, 2015 from www.sciencedaily.com/releases/2009/05/090519152616.htm
Cemagref. "Sugar-cane Fields Observed By Satellite." ScienceDaily. www.sciencedaily.com/releases/2009/05/090519152616.htm (accessed January 27, 2015).

Share This


More From ScienceDaily



More Plants & Animals News

Tuesday, January 27, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

How To: Mixed Green Salad Topped With Camembert Cheese

How To: Mixed Green Salad Topped With Camembert Cheese

Rumble (Jan. 26, 2015) — Learn how to make a mixed green salad topped with a pan-seared camembert cheese in only a minute! Music: Courtesy of Audio Network. Video provided by Rumble
Powered by NewsLook.com
Water Fleas Prepare for Space Voyage

Water Fleas Prepare for Space Voyage

Reuters - Innovations Video Online (Jan. 26, 2015) — Scientists are preparing a group of water fleas for a unique voyage into space. The aquatic crustaceans, known as Daphnia, can be used as a miniature model for biomedical research, and their reproductive and swimming behaviour will be tested for signs of stress while on board the International Space Station. Jim Drury went to meet the team. Video provided by Reuters
Powered by NewsLook.com
Husky Puppy Plays With Ferret

Husky Puppy Plays With Ferret

Rumble (Jan. 26, 2015) — It looks like this 2-month-old Husky puppy and the family ferret are going to be the best of friends. Look at how much fun they&apos;re having together! Credit to &apos;Vira&apos;. Video provided by Rumble
Powered by NewsLook.com
Scientists Model Flying, Walking Drone After Vampire Bats

Scientists Model Flying, Walking Drone After Vampire Bats

Buzz60 (Jan. 26, 2015) — Swiss scientists build a new drone that can both fly and walk, modeling it after the movements of common vampire bats. Jen Markham (@jenmarkham) has the story. Video provided by Buzz60
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

 

Plants & Animals

Earth & Climate

Fossils & Ruins

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