detectRectangle method

@override Future<Map<String, dynamic>?> detectRectangle(Uint8List imageData)

检测图片中最大的矩形并返回四个顶点坐标

• Parameter imageData: 图片的字节数据
• Returns: 包含四个顶点坐标的Map，如果未检测到矩形则返回null

Implementation

@override
Future<Map<String, dynamic>?> detectRectangle(Uint8List imageData) async {
  final result = await methodChannel.invokeMethod('detectRectangle', {
    'imageData': imageData,
  });
  if (result == null) return null;
  return _convertToStringDynamicMap(result);
}