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SLAMorris Final Thesis After Corrections.pdf - Cranfield University

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If the join is in the middle of a metadata section such as in figure 9.4, the<br />

structural template can be applied to identify a fragment with a valid structure<br />

and syntax to follow the fragment. The header section of image records contain<br />

fixed metadata structure; this allows the type of structure to be identified from<br />

the first fragment and the template to be applied until the end of the fragment.<br />

Each remaining fragment can then be assessed to see if it is valid based on the<br />

remainder of the structural template being applied. In the example shown in<br />

figure 9.4 the template finishes part way through a variable and this is matched<br />

to a fragment which fits the remainder of the structure.<br />

Figure 9-5: Reassembling an image fragment<br />

If the fragments join in the middle of image data like the example shown in<br />

figure 9.5 then image fragment reassembly methods would need to be<br />

employed to identify suitable candidates. Firstly if the fragment which contained<br />

the size of the image data was available it would be possible to identify the total<br />

Page<br />

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