基于纹理谱描述子的文档图像检索算法

Document images retrieval based on texture spectrum descriptor

新算法首先根据文档图像的特点分割图像文本区域,并将文档图像中字符的边缘信息使用纹理谱进行描述,计算纹理谱图像的直方图。相对于直接使用灰度直方图进行图像检索,该算法具有更好的区分度。实验结果表明,该方法具有很高的查准率,并对剪切、旋转操作表现出很好的稳定性,适合文档图像检索。

The paper proposed a new method for document images retrieval based on texture spectrum descriptor. This algorithm firstly segmented the text area by document image characteristics, and then described the texture spectrum based on the text character edge, and computed the texture spectrum histogram. Compared with direct use of gray histogram image retrieval, this algorithm possesses high distinguish degree. The experimental results show that this method has high retrieval precision and resists cutting or rotating operations, and is suitable for document image retrieval.