zoukankan      html  css  js  c++  java
  • python 鼠标 画框 打印坐标位置 高宽

     1 #!/usr/bin/python
     2 # -*- coding: utf-8 -*-
     3 # @Time : 2021/8/22 22:28 
     4 # @Author : yangdj 553849374@qq.com
     5 # @File : img_draw_rectangle.py 
     6 # @Software: PyCharm
     7 # 在图片中选取roi并用鼠标画出矩形框
     8 
     9 import cv2
    10 
    11 img = cv2.imread(r"F:pythonpytool-httpapistaticupload	emp_files2021-08-21a5f89c640124aa4b1659ade7a5e0c29.jpg")
    12 
    13 drawing = False
    14 ix, iy = -1, -1
    15 tempFlag = False
    16 
    17 
    18 def draw_circle(event, x, y, flags, param):
    19     global ix, iy, drawing, mode, cap, template, tempFlag
    20     if event == cv2.EVENT_LBUTTONDOWN:
    21         tempFlag = True
    22         drawing = True
    23         ix, iy = x, y  # 按下鼠标左键,用全局变量ix,iy记录下当前坐标点
    24     elif event == cv2.EVENT_LBUTTONUP:
    25         if drawing == True:
    26             drawing = False  # 鼠标左键抬起,画出矩形框
    27             cv2.rectangle(img, (ix, iy), (x, y), (0, 255, 0), 1)
    28             template = img[iy:y, ix:x, :]  # 截取框中的目标图像
    29             # 打印两个点的坐标,和最终原点+宽和高
    30             print((ix, iy), (x, y), f'{ix},{iy},{x - ix},{y - iy}')
    31             # cap = cv2.VideoCapture(-1)       #打开摄像头
    32             # cv2.imshow('img', img)  # 显示画框后的图像
    33             cv2.imshow('template', template)
    34 
    35 
    36 cv2.namedWindow("image")
    37 cv2.setMouseCallback("image", draw_circle)
    38 cv2.imshow("image", img)
    39 
    40 while (True):
    41     try:
    42         cv2.waitKey(100)
    43     except Exception:
    44         cv2.destroyAllWindows()
    45         break
    46 
    47 cv2.waitKey(0)
    48 cv2.destroyAllWindows()
  • 相关阅读:
    6、Docker Image
    5、Docker架构和底层技术
    4、Docker的安装
    3、Docker能干什么?
    2、Docker和虚拟机的对比
    1、Docker介绍
    20、Semantic-UI之数据验证
    Error:java: Compilation failed: internal java compiler error
    Exception in thread "main" java.lang.NoClassDefFoundError: org/springframework/boot/context/embedded/ServletRegistrationBean
    spring boot自定义starter
  • 原文地址:https://www.cnblogs.com/Denny_Yang/p/15173938.html
Copyright © 2011-2022 走看看