Text presented in video frames can provide important supplemental information for video indexing and retrieval.In order to make researchers know the academic area more systemically,this paper gives an overview of state of the art of text detection and recognition technique in video.Typical techniques and method based on feature and learning theory are discussed,as well as their merits and shortcomings.With the present problem,the paper gives some work and issues that can be researched in the future.
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