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电子学报  2014 

基于注意模型的视觉替代方法

DOI: 10.3969/j.issn.0372-2112.2014.05.009, PP. 890-895

Keywords: 视觉替代,听觉显示,视觉注意,感兴趣区域

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Abstract:

现有的视觉替代方法均是在特定环境中,通过目标识别获得映射特征,缺少普遍的适用性.针对这一问题,提出了一种基于注意模型的视觉替代方法.利用人眼的视觉特性,提取图像的感兴趣区域,并根据听觉显示的基本原理,提出了将感兴趣区域的位置、尺寸和颜色映射为音符响度、音长和音调的PSC映射方法.实验结果表明:将图像中引起视觉注意的区域映射为电子音符,符合人类视觉认知过程,有利于盲人获得外部环境的重要信息,降低了盲人训练和学习的难度,并且听感良好,不会造成听觉疲劳.

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