OpenCV 学习记录(1)
作者:互联网
调用本地图像进行灰度处理
import cv2
img = cv2.imread('D:\\learn\\python\\t01\\asd.jpg',cv2.IMREAD_GRAYSCALE)#路径为处理的文件路径
cv2.imshow("result", img )#“result”为窗口名 img为图像
#cv2.imwrite("asd.png",img) #存储名为asd.png的照片
cv2.waitKey(0)等待时间
#cv2.waitKey(1000)#等待1s (毫秒单位)
cv2.destroyWindow
封装为函数
def cv_show(name,img)
cv2.imshow(name,img)
cv2.waitKey(0)等待时间
#cv2.waitKey(1000)等待1s (毫秒单位)
cv2.destroyWindow
调用摄像头灰度
import cv2
vc = cv2.VideoCapture(0)#0,1为摄像头设备号,也可换“xxx.mp4”记得调整cv2.waitKey()
if vc.isOpened():
open, frame = vc.read()#将读取到的
else:
open = False
while open:
ret,frame = vc.read()
if frame is None:
break
if ret == True:
gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
cv2.imshow('result',gray)
if cv2.waitKey(10) & 0xFF ==27:
break
vc.release()
cv2.destroyWindow()
标签:vc,img,记录,frame,cv2,学习,OpenCV,open,waitKey 来源: https://blog.csdn.net/m0_57118320/article/details/121129201