WhyCan Forum(哇酷开发者社区)

import cv2
import numpy as np

SNR = 0.99

filename = "E:/Erika Momotani.jpg"
img = cv2.imread(filename)

cv2.imshow('ori', img)

size = img.size;
noise = int(size * (1 - SNR))
for i in range(0, noise):
    x = int(np.random.uniform(0, img.shape[1]))
    y = int(np.random.uniform(0, img.shape[0]))
    img[y, x] = 0

mb_img = cv2.medianBlur(img, 3)
a_img = cv2.blur(img, (5, 5))
cv2.imshow('salt', img)
cv2.imshow('median', mb_img)
cv2.imshow('average', a_img)
cv2.waitKey(0)

import numpy as np
import matplotlib.pyplot as plt
from matplotlib.ticker import MultipleLocator

x, y = [], []

with open('E:/tp_x.txt', 'r') as file:
    lines = file.readlines();
    for line in lines:
        temp = line.split()
        x.append(int(temp[0], 16))

with open('E:/tp_x1.txt', 'r') as file:
    lines = file.readlines();
    for line in lines:
        temp = line.split()
        y.append(int(temp[0], 16))

plt.plot(x, c='b', linewidth=1.8)
plt.plot(y, c='r', linewidth=1.8)
plt.title('tp')

x_major_locator=MultipleLocator(16)
y_major_locator=MultipleLocator(100);
ax=plt.gca()
ax.xaxis.set_major_locator(x_major_locator)
ax.yaxis.set_major_locator(y_major_locator)
plt.xlim(0,512)
plt.ylim(0,800)

plt.show()