如何将800x480 5英寸屏幕分成两部分 [英] How do I split my 800x480 5-inch screen into 2 parts

问题描述

我正在使用Raspberry Pi 3模型b构建独立的VR耳机.我在手机上看到屏幕拆分时遇到问题.我仍在学习Python，因此我对如何执行此操作没有太多了解.

I am building a stand-alone VR headset using Raspberry Pi 3 model b. I am having a problem with splitting the screen as we see on our phone. I am still learning Python so I don't have much idea on how to do this.

在此代码中，我试图解决上述问题，但是当我在Raspbian上运行此代码时，会出现一个错误，指出 ImageGrab 函数仅在Windows和Mac上有效.我也尝试使用pyscreenshot模块，尽管当我将其与5英寸屏幕连接时，它也可以在PC屏幕上正常工作，但会打开一个黑色窗口，但我什么也看不到.

Here in this code, I have tried to solve the above-mentioned problem but when I run this code on Raspbian an error occurs that ImageGrab function works only on Windows and Mac. I tried to use pyscreenshot module also, although it works on my PC screen fairly when I connect it with my 5-inch screen, a black window opens and I see nothing.

import numpy as np
from PIL import ImageGrab
import cv2
import time

while(True):
screen = np.array(ImageGrab.grab(bbox=(920,420,1320,900)))
frame = cv2.cvtColor(screen, cv2.COLOR_BGR2RGB)
frame = cv2.resize(frame, (0, 0), None, 1, .83)
numpy_horizontal = np.hstack((frame,frame))
#cv2.namedWindow("window", cv2.WND_PROP_FULLSCREEN)
#cv2.setWindowProperty("window", cv2.WND_PROP_FULLSCREEN, cv2.WINDOW_FULLSCREEN)
cv2.imshow('window',numpy_horizontal)

if cv2.waitKey(25) & 0xFF == ord('q'):
    cv2.destroyAllWindows()
    break

推荐答案

您的问题不是拆分屏幕，而是在屏幕上显示图像.因此，您需要一个库来执行此操作.在您的示例中，您使用的是 OpenCV .这通常是一个错误的选择，并且仅对一些简单的调试有用.您需要一个适当的GUI库.

Your problem is not splitting a screen, but to display an image on the screen. So you need a library to do that. In your example you are using OpenCV. This is usually a bad choice and only usefull for some simple debugging. You need a proper GUI library.

在这里，您有无数的选择.如果您喜欢游戏，我会研究 moderngl 和 moderngl-window .它基于PySide2，据我所知，Raspberry Pi现在支持此功能.

Here you have a gazillion of options. If you are into games, I would look into moderngl and moderngl-window. This is based on PySide2, and as far as I have seen Raspberry Pi now supports this.

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