17. The system of claim 14 wherein the text identifying component (i) assigns a score to each white space seed based on a number of word bounding boxes vertically overlapping each respective white space seed which are also within a predefined distance of that respective white space seed and (ii) filters the white space seeds so that only those having a score greater than a predefined threshold are retained as white space regions.
14. The system of claim 13 wherein the text identifying component identifies the white space regions by: selecting one or more rectangular white space candidate seeds that are candidate white space regions, said white space candidate seeds being located in inter-word spaces between neighboring, vertically overlapping word bounding boxes and having a width greater than a threshold width; vertically expanding each white space candidate seed by a configurable amount; selecting expanded white space candidate seeds that do not intersect any word bounding boxes as white space seeds; horizontally expanding the white space seeds without overlapping any word bounding boxes; and vertically expanding the horizontally expanded white space seeds while horizontally shrinking any vertically and horizontally expanded white space seeds to prevent overlap with any word bounding boxes.