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. 9. The method of claim 5 , wherein compositing the aligned versions of the candidate text region comprises combining pixels from each version of the candidate text region including: computing a median value of pixels in each version of the candidate region; and combining the computed median values for corresponding pixels in the aligned versions of the candidate text region.