Algorithm 3 Counting the added value of a photo

1: Extract the metadata of the photo

2: Extract the sequence of coverage features values (s, b, k) of the photo

3: Added value = 0;

4: for each coverage sequence (s, b, k) in the local Boolean K-CoverPicTree do

5:      if Bool_Node(s, b, k) = 0 then

6:       Added value = Added value + 1

7:      end if

8: end for