基于HSV空间的简牍图像增强算法研究*

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.

Research of Bamboo Slips Image Enhancement Algorithm Based on HSV Space

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 pleasant result is helpful for the pickup study.