The program, idTracker, detects and follows every animal in the videos and allows to know the behavior rules of their social interaction
Researchers from the Spanish National Research Council (CSIC) have developed a software based on the discovery of some algorithms that enable the identification of each individual, therefore allowing their tracking within the group. Thus, the door opens to the quantitative study of the rules of social interaction for many species. The work has been published in the Nature Methods journal.
Animals that move in groups make decisions considering what other members of their community do. To find out the rules of these interactions, researchers record monitoring videos through which they study the behavior of different individuals. However, existing monitoring methods so far show identification errors throughout the video, which makes that assignment of identity is wrong.
Researchers from the Cajal Institute (CSIC) have developed a software called idTracker, a CSIC patent that enables tracking of animals through identification. The image of the individual, with its unique features, becomes the particular "footprint" of each animal, which allows tracking it although the human visual system can not. Even if they hide or temporarily disappear from the scene, these are recognized by the program when they enter the scene again.
Gonzalo G. de Polavieja, CSIC researcher and head of the study, states: "From now on, we will be able to quantitatively determine the rules of animal behavior in groups taking into account the individuality of each animal".
Frame by frame tracking
The software identification system first performs a search of the specimens when they are separated and can be differentiated. Since then, the program identifies and recognizes its image in every frame of the video. The identification is automatically done by extracting the 'footprint' of each animal. Thus, the routes that each of them took can be determined. De Polavieja adds: "Furthermore, it is possible to study the same individual in several videos because its 'footprint' is always the same. This enables a better understanding of their behavior".
Researchers claim that idTracker is a very easy to use software that can be used with a variety of different species. They state: "We have done tests with fish (Danio rerio and Oryzias latipes), flies (Drosophila melanogaster), ants (Messor structor) and mice (Mus musculus), but it can be applied to other animals".
And among the applications of this software, Alfonso Pérez Escudero, CSIC researcher also during the preparation of this study, notes that "in the short term, this will be used in science, but in the longer term, the method we have developed can be applied to recognize people in large crowds, vehicles or parts in a factory, for instance".
Alfonso Pérez-Escudero, Julián Vicente-Page, Robert C. Hinz, Sara Arganda y Gonzalo G. de Polavieja. idTracker: Tracking individuals in a group by automatic identification of unmarked animals. Nature Methods. DOI: 10.1038/nmeth.2994
María González | Eurek Alert!
Five developments for improved data exploitation
19.04.2017 | Deutsches Forschungszentrum für Künstliche Intelligenz GmbH, DFKI
Smart Manual Workstations Deliver More Flexible Production
04.04.2017 | Deutsches Forschungszentrum für Künstliche Intelligenz GmbH, DFKI
More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.
Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...
Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.
"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...
The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.
Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...
The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...
Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.
Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...
20.04.2017 | Event News
18.04.2017 | Event News
03.04.2017 | Event News
26.04.2017 | Life Sciences
26.04.2017 | Physics and Astronomy
26.04.2017 | Earth Sciences