Sea Technology

JUN 2014

The industry's recognized authority for design, engineering and application of equipment and services in the global ocean community

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Page 19 of 76 June 2014 / st 19 using commercial-off-the- shelf components. The fnal output, created by the mo- bile device and the relative software, can be thought of as a multidimensional, multilevel postcard of the explored area. Photos captured during a mission can integrate ad- ditional levels of environ- mental information, such as location coordinates, temperature, pressure and pH measurements, which are gathered by the mobile device at the time of shoot- ing. Some of the informa- tion is obtained by onboard sensors; other data can be accessed by the capability of specifc boards to interface with external hardware over a variety of commonly used protocols (i.e., IOIO for Android). These boards are small enough to be easily housed in an underwater smartphone case. Data gathered by the mobile device are collected in a database managed by a solid and well-organized server technology that is able to process and return results to external users. DiRAMa provides the user with greater data processing, particularly of images, and 3D reconstruction algorithms at the server level. A 3D model of a marine area enables in-depth research. Overall, the sys- tem comprises the mobile device of the end user, and the management and processing architecture created to support it. Global Architecture DiRAMa's system architecture can be represented sche- matically by single blocks interconnected with lines, which characterize the information exchange. Each block is ana- lyzed in connection with the other blocks. Mobile Acquisition Device (Android Board). This block is basically composed of a camera, other sensors and a mi- T he study of submarine environments is affecting a growing audience in the felds of science, technology and entertainment. Archaeol- ogists are always interested in documenting and cataloging underwater sites, while biolo- gists aim at monitoring and sampling water and biologi- cal parameters. In addition, recreational activities, such as scuba diving and snorkel- ing, demand instruments that are more effcient in order to obtain data to share with oth- ers who are passionate about the sea. These activities have not been invasive, but diff- culties increase as the depths of activity increase. Moreover, such kinds of users are sometimes not familiar with complex technologies and robotic systems, or they are not able to sustain the costs of underwater data-gathering systems. DiRAMa is a new data-gathering system for marine envi- ronments. The project won the Working Capital 2012, Tele- com Italia S.p.A. (Milan, Italy) initiative aimed at rewarding the most promising ideas in the feld of research. The device will make image and data acquisition at sea easier by utiliz- ing smartphones, tablets and smart cameras and letting the user upload all the information on an appropriate Web serv- er as soon as an Internet connection is available. Users can launch 3D reconstruction processes, which use uploaded photos and other materials, while the Web server sends a notifcation via the mobile device to inform interested par- ties of updated status. The innovative system has proven to be effective. DiRAMa Principal Features The DiRAMa system includes different kinds of sensors, while remaining low-cost and small. It integrates heteroge- neous information coming from the marine environment, DiRAMa Facilitates Data Gathering and Analysis at Sea System Creates 3D Images Using Data Gathered From Mobile Devices By David Scaradozzi • Laura Sorbi • Francesco Zoppini The principal components of DiRAMa. JUN2014.indd 19 6/4/14 1:04 PM

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