我一直在尝试制作一个打开设备相机的应用程序，但出现此错误：
[CRITICAL ] [Camera ] Unable to find any valuable Camera provider at all!
videocapture - ImportError: No module named VideoCapture
File "C:\Users\Gaston\Downloads\Kivy-1.9.0-py2.7-win32-x86\kivy27\kivy\core\__init__.py", line 57, in core_select_lib
fromlist=[modulename], level=0)
File "C:\Users\Gaston\Downloads\Kivy-1.9.0-py2.7-win32-x86\kivy27\kivy\core\camera\camera_videocapture.py", line 15, in <module>
from VideoCapture import Device
opencv - ImportError: No module named cv
File "C:\Users\Gaston\Downloads\Kivy-1.9.0-py2.7-win32-x86\kivy27\kivy\core\__init__.py", line 57, in core_select_lib
fromlist=[modulename], level=0)
File "C:\Users\Gaston\Downloads\Kivy-1.9.0-py2.7-win32-x86\kivy27\kivy\core\camera\camera_opencv.py", line 20, in <module>
import cv
尝试安装 opencv 但仍然无法正常工作。我的代码与kivy中的代码示例相同docs:
from kivy.app import App
from kivy.lang import Builder
from kivy.uix.boxlayout import BoxLayout
import time
Builder.load_string('''
<CameraClick>:
orientation: 'vertical'
Camera:
id: camera
resolution: (640, 480)
play: False
ToggleButton:
text: 'Play'
on_press: camera.play = not camera.play
size_hint_y: None
height: '48dp'
Button:
text: 'Capture'
size_hint_y: None
height: '48dp'
on_press: root.capture()
''')
class CameraClick(BoxLayout):
def capture(self):
'''
Function to capture the images and give them the names
according to their captured time and date.
'''
camera = self.ids['camera']
timestr = time.strftime("%Y%m%d_%H%M%S")
camera.export_to_png("IMG_{}.png".format(timestr))
print("Captured")
class TestCamera(App):
def build(self):
return CameraClick()
TestCamera().run()
None
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