摘要
针对简牍图像存在对比度低、噪声大、文字模糊等问题,采用了一种适合简牍的彩色图像增强算法。该方法按人的视觉特性选择了HSV空间,并将线性变换、中值滤波、高斯—拉普拉斯级联作用于图像的亮度分量,同时也对饱和度做了相应的拉伸处理。理论分析和实验结果均表明,增强后的简牍图像更清晰,文字信息更突出,增加了可读信息,达到了令人满意的结果,有利于后期信息提取工作的开展。
A new algorithm of bamboo slips enhancement was used, in accordance with the feature of bamboo slips,including low contrast, serious noises, fuzzy words and so on. The perceptual color HSV space was chosen. When the saturation was processed, the value was disposed by the combined method of linear transformation, median filtering and laplacian of Gaussian. Both the theory analysis and the experimental results show that the enhanced bamboo slips image is much more clearly and more words can be, known. The nleasant result is heloful for the oickuo studv.
出处
《计算机应用研究》
CSCD
北大核心
2007年第6期204-206,共3页
Application Research of Computers
基金
国家"十五"科技攻关计划资助项目(2004BA810B)
关键词
色度空间
线性变换
中值滤波
高斯一拉普拉斯
color space
linear transformation
median filtering
Laplacian of Gaussian
