opencv(六)-通过改变threshold可以把不清楚的图片变得很清楚_通过threshold

#coding=utf-8
import cv2
import numpy as np
 
img=cv2.imread('ww.png')
retval,thre=cv2.threshold(img,12,255,cv2.THRESH_BINARY)
 
grayscal=cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)
retval1,thre1=cv2.threshold(grayscal,12,255,cv2.THRESH_BINARY)
gaus=cv2.adaptiveThreshold(grayscal,255,cv2.ADAPTIVE_THRESH_GAUSSIAN_C,cv2.THRESH_BINARY,155,1)
cv2.imshow('re1',img)
cv2.imshow('re2',thre)
cv2.imshow('re3',thre1)
cv2.imshow('re4',gaus)
cv2.waitKey(0)
cv2.destroyAllWindows()