??QQ????.py 文件源码

def draw_rect(event,x,y,flags,param):
    global x1,y1,x2,y2,drawing,img,imgSmall,finishDraw
    # ??????????????
    if event==cv2.EVENT_LBUTTONDOWN:
        drawing=True
        x1,y1=x,y
    # ???????????????? event ??????? flag ??????
    elif event==cv2.EVENT_MOUSEMOVE and flags==cv2.EVENT_FLAG_LBUTTON:
        if drawing==True:
            img[:,:]=newGray[:,:]
            img[y1:y,x1:x]=imgSmall[y1:y,x1:x]
            cv2.rectangle(img,(x1,y1),(x,y),(0,0,255),1)
    # ??????????
    elif event==cv2.EVENT_LBUTTONUP:
        drawing==False
        x2,y2=x,y
        finishDraw = True