用正弦函数调制位势图显示平面矢量磁场

为了在图像上更加有效地观察矢量磁场 ,提出一种新的灰度纹理图像显示法。该方法用正弦函数对平面磁场的位势函数进行调制 ,从而将磁场矢量的信息映射为纹理图像的灰度值。这种新型纹理图像表现了磁通量管的形象 ,通量管的长度方向即为磁场的矢量方向 ,通量管的宽度则反映磁场矢量的强弱。该方法实现了场域内的密集采样 ,生成磁场图像速度快、质量高 ,且不含高频噪声 ,显著地提高了灰度图像对矢量磁场的表现能力。

Imaging of planar magnetic vector fields using sinusoidal function modulated potential maps

In order to show magnetic vector fields more effectively on a screen display, a new kind of grayscale texture method called sinusoidal function modulated potential (SMP) maps was proposed, which was generated by mapping the magnetic fields to grayscale images using their magnetic vector potentials modulated with a sinusoidal function. The images display the appearance of flux tubes instead of flux lines, in which the direction along the tube length coincides with that of the magnetic field, while the tube width is inversely proportional to the flux density. The approach has the advantages of high image generated speed, high images quality, less high frequency noises and high compressed ratio.