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Luxand公司人脸识别的专业SDK开发包
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Luxand公司人脸识别的专业SDK开发包 Luxand公司人脸识别的专业SDK开发包 Luxand公司人脸识别的专业SDK开发包
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Copyright © 2005–2008 Luxand, Inc. http://www.luxand.com
1
Luxand, Inc.
http://www.luxand.com
Luxand FaceSDK 1.7
Face Detection and Recognition Library
Developer’s Guide
Copyright © 2005–2008 Luxand, Inc. http://www.luxand.com
2
Table of Contents
Introduction .............................................................................................................................. 4
Requirements ............................................................................................................................ 4
Installation ................................................................................................................................ 4
Directory Structure .................................................................................................................. 4
Redistributables ........................................................................................................................ 5
Technical Specifications ........................................................................................................... 5
Face Detection .................................................................................................................................................... 5
Facial Feature Detection ..................................................................................................................................... 6
Face Matching .................................................................................................................................................... 6
Sample Applications ................................................................................................................. 6
Using Luxand FaceSDK........................................................................................................... 6
Library Activation .................................................................................................................... 7
FSDK_GetHardware_ID Function ..................................................................................................................... 7
FSDK_ActivateLibrary Function ....................................................................................................................... 7
FSDK_GetLicenseInfo Function ........................................................................................................................ 7
Initialization .............................................................................................................................. 8
FSDK_Initialize Function .................................................................................................................................. 8
FSDK_Finalize Function .................................................................................................................................... 8
Working With Images .............................................................................................................. 8
FSDK_LoadImageFromFile Function................................................................................................................ 9
FSDK_LoadImageFromHBitmap Function ....................................................................................................... 9
FSDK_SaveImageToFile Function .................................................................................................................... 9
FSDK_SetJpegCompressionQuality ................................................................................................................ 10
FSDK_SaveImageToHBitmap Function .......................................................................................................... 10
FSDK_FreeImage Function ............................................................................................................................. 11
Face Detection ......................................................................................................................... 11
Data types ......................................................................................................................................................... 11
FSDK_DetectFace Function............................................................................................................................. 12
FSDK_DetectMultipleFaces Function ............................................................................................................. 12
FSDK_SetFaceDetectionParameters Function ................................................................................................. 13
FSDK_SetFaceDetectionThreshold Function .................................................................................................. 14
Facial Feature Detection ........................................................................................................ 15
FSDK_DetectFacialFeatures Function ............................................................................................................. 15
FSDK_DetectFacialFeaturesInRegion Function .............................................................................................. 16
Face Matching ........................................................................................................................ 17
FSDK_GetFaceTemplate ................................................................................................................................. 17
FSDK_GetFaceTemplateInRegion................................................................................................................... 18
FSDK_GetFaceTemplateUsingFeatures .......................................................................................................... 19
FSDK_MatchFaces .......................................................................................................................................... 19
FSDK_GetMatchingThresholdAtFAR ............................................................................................................. 20
FSDK_GetMatchingThresholdAtFRR ............................................................................................................. 21
Face Image Extraction ........................................................................................................... 21
FSDK_ExtractFaceImage Function.................................................................................................................. 21
Obsolete Functions ................................................................................................................. 22
Copyright © 2005–2008 Luxand, Inc. http://www.luxand.com
3
Error Codes ............................................................................................................................ 22
Detected Facial Features ........................................................................................................ 22
Copyright © 2005–2008 Luxand, Inc. http://www.luxand.com
4
Introduction
Luxand FaceSDK is a face detection and recognition library that can easily be integrated into
a customer's applications. FaceSDK offers the API (Application Programming Interface) to
detect a face and facial features, and to match faces (1:1 and 1:N matching is supported).
Following face detection, the SDK provides the coordinates of 40 facial feature points – such
as eyes, eye corners, eyebrows, mouth corners, nose tip – for further processing.
Luxand FaceSDK is supplied as a DLL (a Win32 Dynamic Link Library), and can be used in
the number of compilers on the Win32 platform. FaceSDK contains interface header files and
sample applications for Microsoft Visual C++ 6.0/7.0/2005/2008, Microsoft .NET and
Borland Delphi 6.0/7.0.
Requirements
The FaceSDK library has the following system requirements:
Windows 98, Me, 2000, NT, XP
128 MB RAM
100 MB free disk space
Installation
To install Luxand FaceSDK, run the installation file Luxand_FaceSDK_Setup.exe and
follow the instructions. FaceSDK is installed to the C:\Program
Files\Luxand\FaceSDK directory by default. FaceSDK is a copy-protected library, and
must be activated with a license key before each use (see the Library Activation chapter).
To access the FaceSDK library functions, you need to use FaceSDK.dll in your applications.
Please note that FaceSDK uses FaceSDKc.dll, located in the Bin\ directory. This DLL file
should be also accessible from your application. Usually, it is recommended to keep
FaceSDK.dll and FaceSDKc.dll in the working directory of your application or in the
directory specified in the PATH environment variable.
You need to include interface header files into your application project in order to use
FaceSDK.dll. For Microsoft Visual C++ applications, you need to include the header file
(Include\MSVC\LuxandFaceSDK.h) and the library file (Lib\FaceSDK.lib). For Microsoft
.NET applications, use the .NET wrapper (Include\.NET). For Delphi applications, use the
Include\Delphi\LuxandFaceSDK.pas unit in your project.
Directory Structure
The FaceSDK directory contains the following directories and files:
Bin\
FaceSDK binary files
FaceSDK.dll, FaceSDKc.dll
FaceSDK library (should be
redistributed with the
application)
Demo\
Face Recognition Demo application
Include\
Header files
Copyright © 2005–2008 Luxand, Inc. http://www.luxand.com
5
Include\.NET
.NET wrapper
Include\Delphi\
Delphi header files
LuxandFaceSDK.pas
Delphi header file
Include\MSVC\
Microsoft Visual C++ header files
LuxandFaceSDK.h
Microsoft Visual C++ header
file
Lib\
Library files for C++ compiler
FaceSDK.lib
FaceSDK library file
Samples\
Sample applications
Samples\C#
C# sample application
Samples\Delphi\
Delphi sample application
Samples\Delphi-
Recognition\
Face Recognition Demo application
Samples\MSVC\
Microsoft Visual C++ sample application
Samples\MSVC\Images\
Sample images
Redistributables
The following files should be redistributed with the end-user application (1.6 megabytes
archived):
FaceSDK.dll
FaceSDKc.dll
Technical Specifications
The FaceSDK library has the following technical specifications:
Face Detection
Robust frontal face detection
Detection of multiple faces in a photo
Head rotation support: –30..30 degrees of in-plane rotation and –30..30 degrees out-
of-plane rotation
Determines in-plane face rotation angle
Detection speed: from 0.05 to 1.1 sec
o Quick detection: 0.05 sec, webcam resolution, –15..15 degrees of in-plane head
rotation
o Reliable detection: 1.1 sec, digicam resolution, –30..30 degrees of in-plane
head rotation
Returned information for each detected face: (x,y) coordinates of face center, face
width, and rotation angle
Easy configuration of face detection parameters
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