image_quality_gate 0.1.0

image_quality_gate: ^0.1.0 copied to clipboard

example/main.dart

// Evaluates a photo passed on the command line, or a generated test page.
//
//   dart run example/main.dart path/to/photo.jpg [receipt|idCard|document|photo] [en|fr|ar]
import 'dart:io';
import 'dart:typed_data';

import 'package:image/image.dart' as img;
import 'package:image_quality_gate/image_quality_gate_io.dart';

Future<void> main(List<String> args) async {
  final Uint8List bytes;
  if (args.isNotEmpty) {
    bytes = File(args[0]).readAsBytesSync();
  } else {
    // A light page with dark "text" lines, blurred to show a rejection.
    final page = img.Image(width: 1200, height: 1600);
    img.fill(page, color: img.ColorRgb8(220, 220, 220));
    for (var y = 40; y < 1550; y += 24) {
      img.fillRect(page,
          x1: 40, y1: y, x2: 1160, y2: y + 7, color: img.ColorRgb8(10, 10, 10));
    }
    bytes = Uint8List.fromList(
        img.encodeJpg(img.gaussianBlur(page, radius: 10), quality: 90));
  }

  final config = switch (args.length > 1 ? args[1] : 'receipt') {
    'idCard' => QualityConfig.idCard,
    'document' => QualityConfig.document,
    'photo' => QualityConfig.photo,
    _ => QualityConfig.receipt,
  };
  final messages = QualityMessages.forLocale(args.length > 2 ? args[2] : 'en');

  final report = await evaluateInIsolate(bytes, config);

  print(report.passed ? 'Accepted.' : 'Rejected.');
  for (final issue in report.issues) {
    print('- [${issue.severity.name}] ${messages.forIssue(issue)}');
    print('    ${issue.metric} = ${issue.value.toStringAsFixed(3)}, '
        '${issue.kind.name} ${issue.threshold}');
  }
  print('Metrics: ${report.metrics.toMap()}');
}