Widget build(BuildContext context) {
    var size = MediaQuery.of(context).size.width - 75;
    return Container(
      height: size,
      width: size,
      child: Stack(
        alignment: Alignment.center,
        children: <Widget>[
          Image(imageUri: "...", size: size - 30), // this is just a container with the image
          Positioned(
            top: 100,
            left: 100,
            bottom: 100,
            right: 100,
            child: BackdropFilter(
              filter: ImageFilter.blur(
                sigmaX: 5,
                sigmaY: 5,
              ),
              child: Container(
                color: Color(0x66FF0000),
              ),
            ),
          )
        ],
      ),
    );
  }
}