how to capture a single photo with webcam opencv
cam = cv2.VideoCapture(0)
image = cam.read()[1]
cv2.imshow("image", image)
cv2.waitKey(0)
cv2.destroyAllWindows()how to capture a single photo with webcam opencv
cam = cv2.VideoCapture(0)
image = cam.read()[1]
cv2.imshow("image", image)
cv2.waitKey(0)
cv2.destroyAllWindows()camera permission android
<uses-permission android:name="android.permission.CAMERA" />Camera with expo
import React, { useState, useEffect } from 'react';
import { Text, View, TouchableOpacity } from 'react-native';
import { Camera } from 'expo-camera';
export default function App() {
const [hasPermission, setHasPermission] = useState(null);
const [type, setType] = useState(Camera.Constants.Type.back);
useEffect(() => {
(async () => {
const { status } = await Camera.requestPermissionsAsync();
setHasPermission(status === 'granted');
})();
}, []);
if (hasPermission === null) {
return <View />;
}
if (hasPermission === false) {
return <Text>No access to camera</Text>;
}
return (
<View style={{ flex: 1 }}>
<Camera style={{ flex: 1 }} type={type}>
<View
style={{
flex: 1,
backgroundColor: 'transparent',
flexDirection: 'row',
}}>
<TouchableOpacity
style={{
flex: 0.1,
alignSelf: 'flex-end',
alignItems: 'center',
}}
onPress={() => {
setType(
type === Camera.Constants.Type.back
? Camera.Constants.Type.front
: Camera.Constants.Type.back
);
}}>
<Text style={{ fontSize: 18, marginBottom: 10, color: 'white' }}> Flip </Text>
</TouchableOpacity>
</View>
</Camera>
</View>
);
}Copyright © 2021 Codeinu
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