语法格式:
retval,dst=cv2.threshold(src,thresh,maxval,type)
retval,thresh:阈值
maxval:最大值
type:类型
cv2.THRESH_BINARY:二进制阈值化
cv2.THRESH_BINARY_INV:反二进制阈值化
cv2.THRESH_TRUNC:截断阈值化
cv2.THRESH_TOZERO:阈值化为0
cv2.THRESH_TOZERO_INV:反阈值化为0
程序示例:
import cv2
img=cv2.imread("lena.bmp",cv2.IMREAD_UNCHANGED)
retval,result=cv2.threshold(img,128,255,cv2.THRESH_BINARY)
cv2.imshow("lena",img)
cv2.imshow("result",result)
cv2.waitKey()
cv2.destroyAllWindows()
结果: