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Preface The expedition ARK XIX/3 with the German icebreaking RV ...

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All <strong>the</strong> geo-referenced mosaics are stored on-line in a hierarchical file structure:<br />

cruise/dive/session/treatment. One mosaic represents <strong>the</strong> smallest unit consisting of<br />

500 merged images collected <strong>with</strong>in each half a minute during <strong>the</strong> mosaicking<br />

process. It covers an area about 3 m x 6-7 m. And in this case one treatment consists<br />

of up to about 20 mosaics which equals an area of about 3 m x 100 m (Figure B5.4-1<br />

and B5.4-2).<br />

2,5 - 3 m<br />

one mosaic = 6,5 m<br />

Fig. B5.4-1: This part of a treatment shows <strong>the</strong> construction of <strong>the</strong> images <strong>with</strong>in <strong>the</strong> muddy<br />

region (<strong>the</strong>rmal centre) of <strong>the</strong> HMMV.<br />

20 m<br />

Fig. B5.4-2: Changing areas of tube worms and bacterial mats <strong>with</strong>in a 20 m stripe in <strong>the</strong><br />

north west of <strong>the</strong> <strong>the</strong>rmal centre of HMMV.<br />

20 m<br />

Fig. B5.4-3: Rough topography effects of pixel sizes during <strong>the</strong> real time video mosaicking.<br />

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