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  • ケンサク シツモン ト ジマク ノ モジ ガゾウ トクチョウリョウカン ノ キョリ ニ モトズク ジマク ケンサク シュホウ
  • A Method to Retrieve Video Telop Based on the Distance of Character Image Features between Query and Telop

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Video telop retrieval methods based on telop characters can retrieve the corresponding telops to the query from the huge video data. The conventional methods make the text data from the image data of telop characters by recognizing all telop characters in the video data, and then the full text search is operated toward the recognized text data. The conventional methods can not retrieve with high precision, because all telop characters can not recognize as their right characters perfectly. In this paper, a new video telop retrieval method based on telop characters is proposed. In order to specify the suitable telop, this method recognizes the only corresponding telop characters to the query keyword not all characters. This method calculates the distance between each image features of telop characters and template image features of query keyword. The number of distance calculations can decrease by indexing the multidimensional data for image features of telop characters. Experimental results, using 91 query keywords, show that the average precision of proposed method using 1-gram feature becomes 98.61%, and using 2-gram feature becomes 99.59%. Moreover, the retrieval time can be obtained in about 0.5 seconds when using 2-gram feature.


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