我如何使用 Kivy (Python) 相机

2022-01-15 00:00:00 python kivy camera

问题描述

我尝试使用 uix.camera 小部件并从我的网络摄像头中显示一些宽幅图像.我查看了文档并尝试使用这个简单的代码.但它只是给我看一个没有任何视频的白色屏幕(我启用了播放).我做错了什么?也许存在一些有用的文档教程(因为从官方文档中我了解了很多).感谢您的帮助.

I try to use uix.camera widget and show some wideo from my web-camera. I looked into the documentation and try to use this simply code. But it's just show me a white creen withoud any video (I enabled playing). What I'm doing wrong? Maybe some useful docs utorial exist (because from official documentation I understanding a little from many). Thanks for any help.

import kivy
kivy.require('1.9.1')

from kivy.app import App
from kivy.uix.label import Label
from kivy.uix.camera import Camera

class MainApp(App):
    def build(self):
        return Camera(play=True)

if __name__== "__main__":
    MainApp().run()

解决方案

需要指定分辨率.就我而言，我还需要指定 index=1，即插入我计算机的第二个摄像头.

You need to specify resolution. In my case, I also needed to specify index=1, that is the second camera plugged in my computer.

例子:

import kivy
kivy.require('1.9.1')

from kivy.app import App
from kivy.uix.label import Label
from kivy.uix.camera import Camera

class MainApp(App):
    def build(self):
        return Camera(play=True, index=1, resolution=(640,480))

if __name__== "__main__":
    MainApp().run()

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