我正在尝试获取图像的fft,然后使用matplotlib绘制该fft的fraq。但是,出现了以下错误消息:
"ValueError: x和y不能大于2-D,但形状为(2592,)和(2592,1,3)"。
我尝试对np.array进行重塑,如下所示:
import numpy as np
from PIL import Image
import matplotlib.pyplot as plt
import tkinter
from scipy.fftpack import fft, fft2, fftshift
resim = Image.open(r'yeni.jpg')
resim_data = np.asarray(resim)
fourier = fft2(resim_data)
#psd2D = np.abs(fourier)**2
plt.figure()
plt.semilogy(abs(fourier).astype(np.uint8))
plt.title('fourier transform fraq')
plt.show()
以下是错误信息:
Traceback (most recent call last):
File "myfrouier.py", line 21, in
plt.semilogy(abs(fourier).astype(np.uint8)) File
"/home/aybarsyildiz/.local/lib/python3.6/site-packages/matplotlib/pyplot.py",
line 2878, in semilogy return gca().semilogy(*args, **kwargs)
File "/home/aybarsyildiz/.local/lib/python3.6/site-packages/matplotlib/axes/_axes.py", line 1844, in semilogy l = self.plot(*args, **kwargs) File "/home/aybarsyildiz/.local/lib/python3.6/site-packages/matplotlib/init.py", line 1810, in inner return func(ax, *args, **kwargs)
File "/home/aybarsyildiz/.local/lib/python3.6/site-packages/matplotlib/axes/_axes.py", line 1611, in plot for line in self._get_lines(*args, **kwargs):
File "/home/aybarsyildiz/.local/lib/python3.6/site-packages/matplotlib/axes/_base.py", line 393, in _grab_next_args yield from self._plot_args(this, kwargs) File "/home/aybarsyildiz/.local/lib/python3.6/site-packages/matplotlib/axes/_base.py", line 370, in _plot_args x, y = self._xy_from_xy(x, y) File "/home/aybarsyildiz/.local/lib/python3.6/site-packages/matplotlib/axes/_base.py", line 234, in _xy_from_xy "shapes {} and {}".format(x.shape, y.shape)) ValueError: x 和 y 的维度不能超过2,但其形状分别为(2592,)和(2592,1,3)
y
的形状是(2592, 1, 3)
,你需要一个二维数组。 - undefined