delphi xe LuxandFaceSDK 代码

LuxandFaceSDK是一个人脸识别和人脸识别技术的软件开发工具包，可以用于构建各种人脸识别应用程序。下面是一个Delphi XE中使用LuxandFaceSDK的示例代码：

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, ExtCtrls, LuxandFaceSDK_TLB;

type
  TForm1 = class(TForm)
    Timer1: TTimer;
    Image1: TImage;
    procedure Timer1Timer(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure FormDestroy(Sender: TObject);
  private
    { Private declarations }
    FSDK: IFSDK;
    FImageHandle: HImage;
    FTracker: ITracker;
    FLock: TCriticalSection;
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);
begin
  FSDK := CoFSDK.Create;
  FSDK.ActivateLibrary('YOUR_LICENSE_KEY_HERE');
  FSDK.Initialize;
  FTracker := CoTracker.Create;
  FTracker.MaxFaces := 1;
  FLock := TCriticalSection.Create;
end;

procedure TForm1.FormDestroy(Sender: TObject);
begin
  FLock.Enter;
  try
    FImageHandle := 0;
    FTracker.Clear;
    FTracker := nil;
    FSDK.Finalize;
    FSDK := nil;
  finally
    FLock.Leave;
  end;
  FLock.Free;
end;

procedure TForm1.Timer1Timer(Sender: TObject);
var
  FacePosition: TFacePosition;
  FaceImage: HImage;
begin
  FLock.Enter;
  try
    if FImageHandle = 0 then
      Exit;
    FTracker.FeedFrame(FImageHandle);
    FTracker.GetFacePosition(0, FacePosition);
    if FacePosition.score > 0.5 then
    begin
      FSDK.CreateFaceImageFromHImage(FaceImage, FImageHandle);
      try
        FSDK.PutFaceImage(FaceImage, FacePosition.xc, FacePosition.yc, 
          FacePosition.w, FacePosition.angle, Image1.Canvas.Handle);
      finally
        FSDK.FreeImage(FaceImage);
      end;
    end;
  finally
    FLock.Leave;
  end;
end;

end.

这个示例代码创建了一个窗体，并使用LuxandFaceSDK进行人脸识别和人脸识别。在窗体的OnCreate事件中，代码创建了一个IFSDK和ITracker对象，并使用激活码激活LuxandFaceSDK库。在窗体的OnDestroy事件中，代码清理了创建的对象和资源。在窗体的OnTimer事件中，代码获取当前帧的图像句柄，并使用ITracker对象进行人脸识别。如果检测到人脸，代码使用IFSDK对象从图像句柄中提取人脸图像，并将其绘制到指定控件的画布上。