Patent Document ID: 9098581
Application ID: 11995650

Base Claim:
1. A method of finding a text reading order in a document, the method comprising, with a processor executing instructions from a memory: determining a plurality of text zones within the document; for each text zone, generating a semantic measure of text within the text zone; and calculating a plurality of pairwise correlations between respective zone pairs; clustering the plurality of text zones into a plurality of clusters in dependence upon the plurality of pairwise correlations; and determining a separate reading order for the plurality of text zones within each respective cluster.

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Claim 3:
3. The method of claim 1 , wherein the plurality of clusters are determined by: (a) selecting an initial text zone of the plurality of text zones as the start of a first cluster of the plurality of clusters; (b) adding to the first cluster any of the plurality of text zones which has a first pairwise correlation of the plurality of pairwise correlations of greater than a cut-off value with a second text zone already in the first cluster; (c) repeating (b) until no further text zones are added to the first cluster; and (d) repeating (a) to (c) until there are no more clusters to create.