HSV空间彩色X线医学图像增强研究

Research of Color X-ray Medical Image Enhancement in HSV Space

提出了一种HSV空间彩色X线医学图像增强方法。该方法首先将医学图像转换到HSV颜色空间,然后在HSV空间中分别用Sigmoid函数和线性变换函数对其亮度和饱和度进行增强,再把增强后的图像转换到RGB颜色空间进行显示。在重新定义的Sigmoid函数中,通过引入两个可调节的参数a和b,较好的提高了算法的有效性;在线性函数中引入参数k1和k2,提高了算法的通用性。实验表明算法具有较好的增强效果。

A color X-ray medical image enhancement algorithm in HSV color space has been developed. The medical image is transformed to HSV space first,then a sigmoid function is applied to the value and a line function is applied to saturation. Finally, we show enhanced image in RGB color space. Two parameters （a and b）were introduced in redefined Sigmoid function for the purpose of enhancing image adaptively. Another parameters（kl and k2）were used in line function in order to increase common use. The experiment show that the proposed algorithm can work well to enhancing medical images.