  Due to a noticeable expansion of document recognition applicability, there is
a high demand for recognition on mobile devices. A mobile camera, unlike a
scanner, cannot always ensure the absence of various image distortions,
therefore the task of improving the recognition precision is relevant. The
advantage of mobile devices over scanners is the ability to use video stream
input, which allows to get multiple images of a recognized document. Despite
this, not enough attention is currently paid to the issue of combining
recognition results obtained from different frames when using video stream
input. In this paper we propose a weighted text string recognition results
combination method and weighting criteria, and provide experimental data for
verifying their validity and effectiveness. Based on the obtained results, it
is concluded that the use of such weighted combination is appropriate for
improving the quality of the video stream recognition result.
