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Image Classification Method Based on Weighted Visual Language Model for Saliency Map

WANG Tingjin,ZHAO Yongwei,LI Bicheng   

  1. (Institute of Information System Engineering,Information Engineering University,Zhengzhou 450002,China)
  • Received:2014-03-21 Online:2015-03-15 Published:2015-03-13

基于显著图加权视觉语言模型的图像分类方法

王挺进,赵永威,李弼程   

  1. (信息工程大学信息系统工程学院,郑州450002)
  • 作者简介:王挺进(1988 - ),男,硕士研究生,主研方向:图像分析与处理;赵永威,博士研究生;李弼程,教授、博士、博士生导师。

Abstract: At the parameter estimation stage of the image classification method based on the traditional Visual Language Model(VLM),the distribution of visual words is usually analysed via maximum likelihood estimation,which ignores the adverse effect of image background noise. In view of the problem,an image classification method of weighted VLM for saliency map is put forward. The salient regions and background regions are extracted via saliency detection algorithm based on visual attention,the visual documents of images with salient labels are constructed,and the salient weights and conditional probability are estimated in the training phase. The images are classified with weighted VLM for saliency map. Experimental results show that,this method can effectively reduce the influence of image background noise,and enhances the discrimination performance of visual words,so as to improve the performance of image classification based on VLM.

Key words: image information, Visual Language Model(VLM), image classification, background region, saliency map

摘要: 传统基于视觉语言模型(VLM)的图像分类方法在参数估计阶段,通常采用最大似然估计的方式统计视觉 单词的分布,忽略了图像背景噪声对该模型参数估计的影响。为此,提出一种新的图像分类方法。利用基于视觉 注意的显著性检测算法提取图像中的显著区域和背景区域,构建的图像带有显著图标识的视觉文档,训练视觉单 词的显著度权重和条件概率,并使用显著图加权视觉语言模型进行图像分类。实验结果表明,与传统VLM 等方法 相比,该方法能有效克服图像背景噪声的影响,增强视觉单词的区分性,提高分类准确率。

关键词: 图像信息, 视觉语言模型, 图像分类, 背景区域, 显著图

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