defonMouseHover(event,x,y,flags,param):ifevent==cv2.EVENT_MOUSEMOVE:img=np.zeros((512,512,3),np.uint8)# 创建一个黑色图像cv2.circle(img,(x,y),10,(0,255,0),-1)# 在鼠标悬浮的位置绘制一个绿色圆cv2.imshow('image',img)cv2.namedWindow('image')cv2.setMouseCallback('image',onMouseHover)...
EVENT_RBUTTONUP = 5 中键弹起 3、应用 import cv2 import numpy as np def onmouse(event, x, y, flags, param): # 创建回调函数 if event == cv2.EVENT_LBUTTONDOWN: # 按下左键 # do somthing elif event == cv2.EVENT_MOUSEMOVE and flags == cv2.EVENT_FLAG_LBUTTON: # 当按下左键拖拽鼠...
# 定义鼠标事件回调函数 def on_mouse(event, x, y, flags, param): # 鼠标左键按下,抬起,双击 if event == cv2.EVENT_LBUTTONDOWN: print('Left button down at ({}, {})'.format(x, y)) elif event == cv2.EVENT_LBUTTONUP: print('Left button up at ({}, {})'.format(x, y)) elif...
rect = self.rects.pop()returnrectdefonmouse_draw_rect(event,x,y,flags,draw_rects):ifevent == cv2.EVENT_LBUTTONDOWN: draw_rects.left_button_down =Truedraw_rects.current_rect.t1 = (x,y)ifdraw_rects.left_button_downandevent == cv2.EVENT_MOUSEMOVE: draw_rects.current_rect.br = dra...
if event == cv.EVENT_LBUTTONDOWN: drawing = True ix,iy = x,y elif event == cv.EVENT_MOUSEMOVE: if drawing == True: if mode == True: cv.rectangle(img,(ix,iy),(x,y),(0,255,0),-1) else: cv.circle(img,(x,y),5,(0,0,255),-1) ...
self.label.setText('坐标: ( x: %d ,y: %d )'% (event.x(), event.y()) +"离中心点距离:"+str(distance_from_center)) self.pos=event.pos() self.update() 这个函数就是捕捉鼠标移动事件了,我们把得到的坐标已经一些相关的信息显示在label上。必须调用函数update()才能更新图形。
defonmouse(event,x,y,flags,param):# 标准鼠标交互函数# if event==cv2.EVENT_LBUTTONDBLCLK : #当鼠标点击时# print("y=",y), print("x=",x), print(img[y,x],"\n") #显示鼠标所在像素的数值,注意像素表示方法和坐标位置的不同ifevent==cv2.EVENT_MOUSEMOVE:# 当鼠标移动时print("y=",y,"x...
EVENT_MOUSEMOVE: print('Moving at ({}, {})'.format(x, y)) # 为指定的窗口绑定自定义的回调函数 cv2.namedWindow('Honeymoon Island') cv2.setMouseCallback('Honeymoon Island', on_mouse) 目录 6.4.3 代码:物体检测标注的小工具 基于上面两小节的基本使用,就能和OpenCV的基本绘图功能就能实现一个超级...
(b,g,r)globaldrawing,drawLine,drawCircle,drawRectangle,i_x,i_yifevent==cv2.EVENT_LBUTTONDOWN:drawing=Truei_x,i_y=x,yelifevent==cv2.EVENT_MOUSEMOVEandflags==cv2.EVENT_FLAG_LBUTTONanddrawing==True:ifdrawLine==True:cv2.circle(img,(x,y),3,color,-1,cv2.LINE_AA)elifdrawRectangle==True...
; MouseEventTypes Static EVENT_MOUSEMOVE := 0 Static EVENT_LBUTTONDOWN := 1 Static EVENT_RBUTTONDOWN := 2 Static EVENT_MBUTTONDOWN := 3 Static EVENT_LBUTTONUP := 4 Static EVENT_RBUTTONUP := 5 Static EVENT_MBUTTONUP := 6 Static EVENT_LBUTTONDBLCLK := 7...