8. The computing device of claim 7 , wherein determining the content boundaries of the reflowable textual content for each page image comprises determining content boundaries to exclude non-reflowable content found on each page image.
8. The computing device of claim 7 , wherein determining the content boundaries of the reflowable textual content for each page image comprises determining content boundaries to exclude non-reflowable content found on each page image. 9. The computing device of claim 8 , wherein determining metrics for each identified paragraph comprises determining a bounding region for each of the identified paragraphs.