ZHANG You-sheng, PENG Qing-song, WANG Rong-gui. A Method of Caption Detection and Location in Video Images Based on Variant Gray-Scale Histogram[J]. Acta Electronica Sinica, 2004, 32(2): 314-317.
ZHANG You-sheng, PENG Qing-song, WANG Rong-gui. A Method of Caption Detection and Location in Video Images Based on Variant Gray-Scale Histogram[J]. Acta Electronica Sinica, 2004, 32(2): 314-317.DOI：
The paper presents a variant gray-scale histogram (VGH) for the purpose of detecting and locating captions in video images.The definition of VGH is given and the mapping relationships are analyzed between features in VGH and captions in an image.Then
we proposed an algorithm for detecting and locating captions in an image by recognizing the features
including both valleys in row-based VGH of a vertical sub-image and convexes in column-based VGH of a horizontal sub-image.Some experimental results are given in the end of the paper showing validity of the algorithm.
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