home.ts

  grabPicture() {

    const options: CameraOptions = {
      quality: 100,
      targetHeight: 200,
      targetWidth: 200,
      destinationType: this.camera.DestinationType.DATA_URL,
      encodingType: this.camera.EncodingType.JPEG,
      mediaType: this.camera.MediaType.PICTURE
    }

    this.camera.getPicture(options).then((imageData) => {
      this.loading = this.loadingCtrl.create({
        content: 'Please wait...'
      });
      this.loading.present();

      this.selectedPhoto  = this.dataURItoBlob('data:image/jpeg;base64,' + imageData);

      this.upload();
    }, (err) => {
      console.log('error', err);
    });
  }