105 lines
3.0 KiB
C#
105 lines
3.0 KiB
C#
using DlibDotNet;
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using System.Runtime.Serialization;
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namespace View_by_Distance.FaceRecognitionDotNet.Models;
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/// <summary>
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/// Represents a feature data of face. This class cannot be inherited.
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/// </summary>
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[Serializable]
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public sealed class FaceEncoding : DisposableObject, ISerializable
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{
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#region Fields
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[NonSerialized]
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private readonly Matrix<double> _Encoding;
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#endregion
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#region Constructors
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internal FaceEncoding(Matrix<double> encoding) => _Encoding = encoding;
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private FaceEncoding(SerializationInfo info, StreamingContext context)
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{
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if (info == null)
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throw new NullReferenceException(nameof(info));
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double[]? array = info.GetValue(nameof(_Encoding), typeof(double[])) as double[];
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int? row = (int?)info.GetValue(nameof(_Encoding.Rows), typeof(int));
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int? column = (int?)info.GetValue(nameof(_Encoding.Columns), typeof(int));
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if (row is null)
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throw new NullReferenceException(nameof(row));
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if (column is null)
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throw new NullReferenceException(nameof(column));
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_Encoding = new Matrix<double>(array, row.Value, column.Value);
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}
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#endregion
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#region Properties
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internal Matrix<double> Encoding => _Encoding;
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/// <summary>
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/// Gets the size of feature data.
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/// </summary>
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/// <exception cref="ObjectDisposedException">This object is disposed.</exception>
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public int Size
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{
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get
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{
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ThrowIfDisposed();
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return _Encoding.Size;
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}
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}
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#endregion
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#region Methods
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/// <summary>
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/// Gets a feature data of face as raw format.
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/// </summary>
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/// <returns>A <see cref="double"/> array that represents a feature data.</returns>
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/// <remarks><see cref="FaceEncoding"/> class supports serialization. This method is for interoperability between FaceRecognitionotNet and dlib.</remarks>
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/// <exception cref="ObjectDisposedException">This object is disposed.</exception>
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public double[] GetRawEncoding()
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{
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ThrowIfDisposed();
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return _Encoding.ToArray();
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}
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#region Overrides
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/// <summary>
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/// Releases all unmanaged resources.
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/// </summary>
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protected override void DisposeUnmanaged()
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{
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base.DisposeUnmanaged();
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_Encoding?.Dispose();
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}
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#endregion
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#endregion
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#region ISerializable Members
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/// <summary>
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/// Populates a <see cref="SerializationInfo"/> with the data needed to serialize the target object.
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/// </summary>
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/// <param name="info">The <see cref="SerializationInfo"/> to populate with data.</param>
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/// <param name="context">The destination (see <see cref="StreamingContext"/>) for this serialization.</param>
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public void GetObjectData(SerializationInfo info, StreamingContext context)
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{
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info.AddValue(nameof(_Encoding), _Encoding.ToArray());
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info.AddValue(nameof(_Encoding.Rows), _Encoding.Rows);
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info.AddValue(nameof(_Encoding.Columns), _Encoding.Columns);
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}
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#endregion
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} |