OpenCV FullScreen Window

• Python - PythonのOpenCVでフルスクリーン表示｜teratail

import cv2

cv2.namedWindow('screen', cv2.WINDOW_NORMAL)
cv2.setProperty('screen', cv2.WND_PROP_FULLSCREEN, cv2.WINDOW_FULLSCREEN)

This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

• python-opencvでQt plugin "cocoa"が見つからないというエラー - Qiita

黒画面

import cv2
import numpy as np

# Change here
WIDTH = 1920
HEIGHT = 1080

# For secondary monitor,
LEFT = 0
TOP = 0

screen = np.zeros((HEIGHT, WIDTH), dtype=np.uint8)
cv2.namedWindow('screen', cv2.WINDOW_NORMAL)
cv2.moveWindow('screen', LEFT, TOP)
cv2.setWindowProperty('screen', cv2.WND_PROP_FULLSCREEN, cv2.WINDOW_FULLSCREEN)

cv2.imshow('screen', screen)

cv2.waitKey(0)

For dynamic image size,

• https://stackoverflow.com/questions/3129322/how-do-i-get-monitor-resolution-in-python
• macos - How to get the desktop resolution in Mac via Python? - Stack Overflow

クリック

def on_click(event, x, y, flags, param):
    if event == cv2.EVENT_LBUTTONDOWN:
        pass

cv2.setMouseCallback('screen', on_click)

• ペイントツールとしてのマウス — OpenCV-Python Tutorials 1 documentation