import cv2 as cv #导入cv2 import numpy as np #导入numpy from matplotlib import pyplot as plt #导入matplotlib img = cv.imread('shape.png', 0) #读取图片 f = np.fft.fft2(img) #计算二维的傅里叶变换 fshift = np.fft.fftshift(f) #计算一维的傅里叶变换 rows, cols = img.shape #获取图像的行数和列数 crow,ccol = int(rows/2), int(cols/2) fshift[crow-30:crow+30, ccol-30:ccol+30] = 0 ishift = np.fft.ifftshift(fshift) iimg = np.fft.ifft2(ishift) iimg = np.abs(iimg) #显示原始图像和高通滤波处理图像 plt.subplot(121), plt.imshow(img, 'gray'), plt.title('Original Image') plt.axis('off') plt.subplot(122), plt.imshow(iimg, 'gray'), plt.title('Result Image') plt.axis('off') plt.show() rows, cols = img.shape crow,ccol = int(rows/2), int(cols/2) mask = np.zeros((rows, cols, 2), np.uint8) mask[crow-30:crow+30, ccol-30:ccol+30] = 1
时间: 2023-05-29 09:03:04 浏览: 72
import cv2 as cv 的意思是导入名为cv2的模块,并将其命名为cv。cv2是一个用于计算机视觉的Python库,其中包含了许多图像处理和计算机视觉方面的函数。通过导入cv2模块,并将其命名为cv,可以方便地使用其中的函数进行图像处理和计算机视觉相关的任务。
相关问题
import cv2 import matplotlib.pyplot as plt import numpy as np %matplotlib inline img =cv2.imread("C:\\Users\\86135\\Desktop\\pj\\c.jpg")
`import cv2`是Python中OpenCV库的导入语句,用于图像处理和计算机视觉任务。`import matplotlib.pyplot as plt`是Python中Matplotlib库的导入语句,用于绘制图表和可视化数据。`%matplotlib inline`是Jupyter Notebook中的魔法命令,用于在Notebook中显示Matplotlib绘制的图表。`img = cv2.imread("C:\\Users\\86135\\Desktop\\pj\\c.jpg")`是使用OpenCV库中的imread()函数读取指定路径下的图像文件,并将其存储在变量img中。如果读取成功,img将是一个NumPy数组,可以对其进行进一步的处理和操作。
import cv2,os import numpy as np import matplotlib.pyplot as plt
Sorry, as an AI language model, I am not able to display images or execute code. However, here is an example of how to read an image in OpenCV and display it using Matplotlib:
```
import cv2
import matplotlib.pyplot as plt
# read image
img = cv2.imread('image.jpg')
# convert color space
img = cv2.cvtColor(img, cv2.COLOR_BGR2RGB)
# display image
plt.imshow(img)
plt.show()
```
Keep in mind that you need to have the necessary libraries installed and the image file in the same directory as your Python script.