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2D image mosaic building 2D3 - Ifremer

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Project Exocet/D page 14/16<br />

(a) (b)<br />

Figure 5: Mosaics obtained without using navigation (a), using Kalman filtering (b)<br />

4. MATISSE SOFTWARE®<br />

4.1. General architecture<br />

The MATISSE Software® [ALL04] has been developed to integrate all the algorithms of georeferenced<br />

<strong>mosaic</strong>ing. It is flexible and can be used with many underwater vehicles as soon<br />

as they are equipped with a down-facing camera and a continuous navigation system (deadreckoning<br />

navigation).<br />

In Figure 6, the diagram represents the condition of use of MATISSE Software® with a ROV.<br />

The video stream and the navigation data are transferred up to the surface via the umbilical<br />

tether. They are processed in-line to produce geo-referenced <strong>mosaic</strong>s. An option consists of<br />

recording the video stream on a video DVD and the navigation data as messages on a CD.<br />

Playing back video and navigation data together makes possible off-line <strong>mosaic</strong> <strong>building</strong>.<br />

Deliverable N° <strong>2D</strong>3<br />

Report on <strong>image</strong> <strong>mosaic</strong> <strong>building</strong><br />

MATISSE<br />

camera<br />

Navigation<br />

MATISSE<br />

Downlooking<br />

camera<br />

Real-time creation of georeferenced<br />

video <strong>mosaic</strong>s<br />

Figure 6: MATISSE Software® used with a ROV<br />

DOP/CM/SM/PRAO/06.224<br />

Grade : 1.0 27/09/2006

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