A Method of Caption Detection and Location in Video Images Based on Variant Gray-Scale Histogram

ZHANG You-sheng; PENG Qing-song; WANG Rong-gui

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A Method of Caption Detection and Location in Video Images Based on Variant Gray-Scale Histogram

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- A Method of Caption Detection and Location in Video Images Based on Variant Gray-Scale Histogram
- Acta Electronica Sinica Vol. 32, Issue 2, Pages: 314-317(2004)
- 作者机构：
  
  合肥工业大学计算机与信息学院,安徽,合肥,230009
- 作者简介：
- 基金信息：
- DOI：
  CLC： TP391
- Published：2004
- 稿件说明：
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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：

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：

摘要

为实现视频图像中字幕的快速检测与定位

本文提出一种变异灰度直方图VGH.文章给出VGH的定义

对其中的特征及其与图像中字幕的映射关系作了分析

并在此基础上给出视频字幕的检测与定位方法.该方法将垂直子图像转换为基于行的VGH (VGH

)

将水平子图像转换为基于列的VGH (VGH

)

通过对其中的凹谷特征和梳状凸台特征的识别

实现对字幕的检测与定位.文章最后给出某些实验结果

表明了算法的有效性.

Abstract

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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