  Text data present in multimedia contain useful information for automatic
annotation, indexing. Extracted information used for recognition of the overlay
or scene text from a given video or image. The Extracted text can be used for
retrieving the videos and images. In this paper, firstly, we are discussed the
different techniques for text extraction from images and videos. Secondly, we
are reviewed the techniques for indexing and retrieval of image and videos by
using extracted text.
