Video Text Detection and Localization Based on Gradients and Coarseness

YUAN Hai-dong; MA Hua-dong; HUANG Xiao-dong

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Video Text Detection and Localization Based on Gradients and Coarseness

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- Video Text Detection and Localization Based on Gradients and Coarseness
- Acta Electronica Sinica Vol. 36, Issue 8, Pages: 1660-1664(2008)
- 作者机构：
  
  1. 北京邮电大学智能通信软件与多媒体北京市重点实验室,北京,100876
  2. 信息工程大学电子技术学院,河南,郑州,450004
  3. 北京邮电大学智能通信软件与多媒体北京市重点实验室北京,100876
  4. 信息工程大学电子技术学院河南郑州,450004
- 作者简介：
- 基金信息：
- DOI：
  CLC： TP391
- Published：2008
- 稿件说明：
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YUAN Hai-dong, MA Hua-dong, HUANG Xiao-dong. Video Text Detection and Localization Based on Gradients and Coarseness[J]. Acta Electronica Sinica, 2008, 36(8): 1660-1664.
DOI：

YUAN Hai-dong, MA Hua-dong, HUANG Xiao-dong. Video Text Detection and Localization Based on Gradients and Coarseness[J]. Acta Electronica Sinica, 2008, 36(8): 1660-1664. DOI：

摘要

本文提出一种视频文本检测和定位的新方法.利用差分图像像素行(列)的粗糙度特征和自适应阈值

实现对文本的快速检测.为进一步实现对文本的精确检测与定位

引入彩色梯度的方向信息

仅计算视频画面中少量关键特征点的梯度幅值

能够有效抑制图像复杂背景的干扰

同时显著提高了算法的效率.本方法对不同的视频画面质量、不同复杂程度的背景以及不同外观的文本是鲁棒的.通过对各类视频节目的大量实验验证了本文方法的有效性.

Abstract

A novel robust approach to video text detection and localization is presented.Through utilizing the adaptive threshold and the statistics coarseness feature of each horizontal (vertical) pixel line of difference image

the text detection is carried out fast and effectively.To suppress the complex background interference

and perform the video text localization accurately

the magnitude of color gradient is computed only for key feature points (selected pixels)

based on the direction information of gradient vector.The proposed method is robust to various video image quality

background complexities and text appearances.Experimental results on a large number of video images demonstrate the effectiveness of our approach.

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