In order to enhance the contrast among the flow lines and improve the vector field visualization quality,this paper presented a method to enhance the flow lines based on fractional differentials. It adopted a scheme of enhancing flow lines which applied fractional differential filter to convolution texture along the direction perpendicular to the flow. The experiment results prove that the proposed method can effectively enhance the flow line.%为增强流线间强度对比,提高矢量场可视化效果,提出了一种基于分数阶微分滤波的流线增强方法.该方法通过构造分数阶微分算子,对卷积纹理在垂直矢量方向上进行分数阶微分滤波,增强了矢量线间的对比,改善了图像质量.实验结果表明,该方法能有效地增强矢量场流线可视化效果,为分析流场特征提供帮助.
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