如何使用Dart在纯代码中调整图像大小？

import 'dart:io';
import 'dart:typed_data';
import 'dart:ui' as ui;
import 'package:image/image.dart' as img;

File imageFile = File('path/to/image.jpg');
Uint8List bytes = imageFile.readAsBytesSync();
img.Image image = img.decodeImage(bytes);

int targetWidth = 800;
int targetHeight = 600;
img.Image resizedImage = img.copyResize(image, width: targetWidth, height: targetHeight);

File resizedImageFile = File('path/to/resized_image.jpg');
resizedImageFile.writeAsBytesSync(img.encodeJpg(resizedImage));