使用matplotlib可以拍摄某些东西的2D图像并将其放置在3D图形中吗?我想拍摄一张2D图像并将其放在z的0位置。我想根据我正在进行的计算,分别沿z轴移动图像中的其他像素。
答案 0 :(得分:1)
查看示例:https://matplotlib.org/gallery/mplot3d/2dcollections3d.html
from mpl_toolkits.mplot3d import Axes3D
import numpy as np
import matplotlib.pyplot as plt
fig = plt.figure()
ax = fig.gca(projection='3d')
# Plot a sin curve using the x and y axes.
x = np.linspace(0, 1, 100)
y = np.sin(x * 2 * np.pi) / 2 + 0.5
ax.plot(x, y, zs=0, zdir='z', label='curve in (x,y)')
# Plot scatterplot data (20 2D points per colour) on the x and z axes.
colors = ('r', 'g', 'b', 'k')
# Fixing random state for reproducibility
np.random.seed(19680801)
x = np.random.sample(20 * len(colors))
y = np.random.sample(20 * len(colors))
c_list = []
for c in colors:
c_list.extend([c] * 20)
# By using zdir='y', the y value of these points is fixed to the zs value 0
# and the (x,y) points are plotted on the x and z axes.
ax.scatter(x, y, zs=0, zdir='y', c=c_list, label='points in (x,z)')
# Make legend, set axes limits and labels
ax.legend()
ax.set_xlim(0, 1)
ax.set_ylim(0, 1)
ax.set_zlim(0, 1)
ax.set_xlabel('X')
ax.set_ylabel('Y')
ax.set_zlabel('Z')
# Customize the view angle so it's easier to see that the scatter points lie
# on the plane y=0
ax.view_init(elev=20., azim=-35)
plt.show()
答案 1 :(得分:0)
如果您的图像是彩色图像,则必须首先确保它是索引图像。这意味着您只能拥有2d矩阵(而不是RGB组件的3个矩阵)。命令rgb2ind可以提供帮助。
然后,您可以直接以3D方式显示图像。使用网格或冲浪命令。
您还可以使用角度和方位角调整透视。