5. The method of claim 4 , wherein generating the superresolution version of the candidate text region comprises: obtaining a plurality of versions of the candidate text region, each version obtained from a corresponding image of the plurality of images; aligning the versions of the candidate text region to a high resolution grid; and compositing the aligned versions of the candidate text region to generate the superresolution version of the candidate text region.
5. The method of claim 4 , wherein generating the superresolution version of the candidate text region comprises: obtaining a plurality of versions of the candidate text region, each version obtained from a corresponding image of the plurality of images; aligning the versions of the candidate text region to a high resolution grid; and compositing the aligned versions of the candidate text region to generate the superresolution version of the candidate text region. 7. The method of claim 5 , wherein aligning the versions of the candidate text region comprises aligning pixels of the versions of the candidate text region using block matching.