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一种基于直方图特征和AdaBoost的图像中的文字定位算法

DOI: 10.11834/jig.20060352

Keywords: 文字定位,直方图特征,自适应提升,文字概率图,连续自适应均值平移

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Abstract:

图像中的文字自动定位是计算机视觉领域中的一个新兴研究热点。为了使得定位算法能够适应不同类型的图像和文字,根据文字所具有的特殊纹理属性,提出了一种具有普适能力的基于直方图特征和AdaBoost的文字定位算法。该算法首先通过提取对文字具有较强鉴别能力的直方图特征和引入AdaBoost算法来设计级联结构的纹理分类器;然后用该分类器的概率输出来生成文字概率图;在此基础上再通过CAMSHIFT算法得到最终的定位结果。实验结果表明,该算法具有较强的鲁棒性,能够适应文字在语种、字体、尺度等方面的变化,在不同类型的图像中都能得到较好的定位结果。

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