import { Camera, CameraOptions } from '@awesome-cordova-plugins/camera/ngx';
constructor(private camera: Camera) { }
...
const options: CameraOptions = {
  quality: 100,
  destinationType: this.camera.DestinationType.FILE_URI,
  encodingType: this.camera.EncodingType.JPEG,
  mediaType: this.camera.MediaType.PICTURE
}
this.camera.getPicture(options).then((imageData) => {
 
 
 let base64Image = 'data:image/jpeg;base64,' + imageData;
}, (err) => {
 
});