点云交互式可视化mayavi

野性酷女 2022-09-07 09:49 237阅读 0赞

windows:

pip install mayavi

这篇博客解决了几个安装问题，并给出一个demo，  
原文链接：https://blog.csdn.net/banyanmars/article/details/80838951

例子代码：

import numpy as np
    from mayavi import mlab
     
    x, y = np.ogrid[-2:2:160j, -2:2:160j]
    z = abs(x) * np.exp(-x ** 2 - (y / .75) ** 2)
    pl = mlab.surf(x, y, z, warp_scale=2)
    mlab.axes(xlabel='x', ylabel='y', zlabel='z')
    mlab.outline(pl)
    mlab.show()

![70][]![70 1][]

知乎上的例子：

import numpy as np
    from mayavi import mlab
    
    t=np.linspace(0,4*np.pi,125)
    x=np.sin(2*t)
    y=np.cos(t)
    z=2*t
    u=4+np.sin(3*t)
    v=3+2*np.cos(t)
    w=2+2*t
    s=2+np.sin(t/5)
    
    points=mlab.points3d(x,y,z,s,colormap='jet',scale_factor=.25)
    points=mlab.points3d(u,v,w,s,colormap='jet',scale_factor=.25)
    mlab.show()

![9a687347b29d2540a68b5e86b053cd15.png][]

from numpy import pi, sin, cos, mgrid
    from mayavi import mlab
    
    #建立数据
    dphi, dtheta = pi/250.0, pi/250.0
    [phi,theta] = mgrid[0:pi+dphi*1.5:dphi,0:2*pi+dtheta*1.5:dtheta]
    m0 = 4; m1 = 3; m2 = 2; m3 = 3; m4 = 6; m5 = 2; m6 = 6; m7 = 4;
    r = sin(m0*phi)**m1 + cos(m2*phi)**m3 + sin(m4*theta)**m5 + cos(m6*theta)**m7
    x = r*sin(phi)*cos(theta)
    y = r*cos(phi)
    z = r*sin(phi)*sin(theta)
    
    #对该数据进行三维可视化
    s = mlab.mesh(x, y, z)
    mlab.show()

![9a81b02ffc92b4c96dc8f7367b892d6d.png][]

更多完整例子，请看知乎博客:

[https://zhuanlan.zhihu.com/p/28077015][https_zhuanlan.zhihu.com_p_28077015]

[70]: https://img-blog.csdn.net/2018062811151849?watermark/2/text/aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jhbnlhbm1hcnM=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70
[70 1]: /images/20220829/fe6e406eebaa49008609126eeae52ce5.png
[9a687347b29d2540a68b5e86b053cd15.png]: /images/20220829/c2dee9796f4b41c6ac6a46798b3c94e8.png
[9a81b02ffc92b4c96dc8f7367b892d6d.png]: /images/20220829/b22d44e3d9904231889ee75c72699970.png
[https_zhuanlan.zhihu.com_p_28077015]: https://zhuanlan.zhihu.com/p/28077015