Luxand_FaceSDK说明文档_LuxandFaceSDK

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Luxand, Inc.

http://www.luxand.com

Luxand FaceSDK

6.1

Face Detection and Recognition Library

Developer’s Guide

Table of Contents

Overview ................................................................................................................................... 6

Requirements ............................................................................................................................ 6

Technical Specifications ........................................................................................................... 6

Face Detection ................................................................................................................................................... 7

Face Matching ................................................................................................................................................... 7

Live Video Recognition with Tracker API ....................................................................................................... 7

Facial Feature Detection .................................................................................................................................. 7

Eye Centers Detection ...................................................................................................................................... 8

Gender Recognition .......................................................................................................................................... 8

Facial Expression Recognition ......................................................................................................................... 8

Multi-Core Support ........................................................................................................................................... 8

Library Size ....................................................................................................................................................... 8

Installation ................................................................................................................................ 8

Windows ............................................................................................................................................................ 8

Linux/Mac OS X ................................................................................................................................................ 9

Directory Structure ............................................................................................................................................. 9

Sample Applications ................................................................................................................. 9

Using FaceSDK with Programming Languages .................................................................. 11

Using with .NET (C# and VB) ......................................................................................................................... 11

Using CImage class in .NET ............................................................................................................................ 12

CImage(); .................................................................................................................................................... 13

CImage(Int); ................................................................................................................................................ 13

CImage.ReloadFromHandle(); .................................................................................................................... 13

Using with C/C++ ............................................................................................................................................ 13

Using with Delphi ............................................................................................................................................ 14

Using with Java ................................................................................................................................................ 14

Using with Cocoa ............................................................................................................................................. 14

Using with VisualBasic 6.0 .............................................................................................................................. 15

Using with iOS ................................................................................................................................................. 15

Using with Android .......................................................................................................................................... 15

Unicode support ............................................................................................................................................... 15

Redistributables ...................................................................................................................... 15

Usage Scenarios ...................................................................................................................... 16

Library Activation .................................................................................................................. 17

FSDK_GetHardware_ID Function ................................................................................................................... 17

FSDK_ActivateLibrary Function ..................................................................................................................... 18

FSDK_GetLicenseInfo Function ...................................................................................................................... 18

Initialization ............................................................................................................................ 19

FSDK_Initialize Function ................................................................................................................................ 19

FSDK_Finalize Function .................................................................................................................................. 19

Working with Images ............................................................................................................. 20

FSDK_CreateEmptyImage Function ................................................................................................................ 20

FSDK_LoadImageFromFile Function .............................................................................................................. 21

FSDK_LoadImageFromFileW Function .......................................................................................................... 22

FSDK_SaveImageToFile Function .................................................................................................................. 22

FSDK_SaveImageToFileW Function .............................................................................................................. 23

FSDK_LoadImageFromBuffer Function ......................................................................................................... 24

FSDK_LoadImageFromJpegBuffer Function .................................................................................................. 25

FSDK_LoadImageFromPngBuffer Function ................................................................................................... 25

FSDK_GetImageBufferSize Function .............................................................................................................. 26

FSDK_SaveImageToBuffer Function .............................................................................................................. 27

FSDK_LoadImageFromHBitmap Function ..................................................................................................... 27

FSDK_SaveImageToHBitmap Function .......................................................................................................... 28

FSDK.LoadImageFromCLRImage Function ................................................................................................... 29

FSDK.SaveImageToCLRImage Function ........................................................................................................ 29

FSDK.LoadImageFromAWTImage Function .................................................................................................. 29

FSDK.SaveImageToAWTImage Function ...................................................................................................... 30

FSDK_SetJpegCompressionQuality ................................................................................................................ 30

FSDK_GetImageWidth Function ..................................................................................................................... 31

FSDK_GetImageHeight Function .................................................................................................................... 31

FSDK_CopyImage Function ............................................................................................................................ 32

FSDK_ResizeImage Function .......................................................................................................................... 33

FSDK_RotateImage Function .......................................................................................................................... 34

FSDK_RotateImageCenter Function................................................................................................................ 34

FSDK_RotateImage90 Function ...................................................................................................................... 35

FSDK_CopyRect Function............................................................................................................................... 36

FSDK_CopyRectReplicateBorder Function .................................................................................................... 37

FSDK_MirrorImage Function .......................................................................................................................... 38

FSDK_FreeImage Function ............................................................................................................................. 38

Face Detection ......................................................................................................................... 39

Data types ......................................................................................................................................................... 39

FSDK_DetectFace Function ............................................................................................................................. 40

FSDK_DetectMultipleFaces Function ............................................................................................................. 41

FSDK_SetFaceDetectionParameters Function ................................................................................................. 42

FSDK_SetFaceDetectionThreshold Function .................................................................................................. 44

Facial Feature Detection ........................................................................................................ 45

FSDK_DetectFacialFeatures Function ............................................................................................................. 46

FSDK_DetectFacialFeaturesInRegion Function .............................................................................................. 47

FSDK_DetectEyes Function ............................................................................................................................ 48

FSDK_DetectEyesInRegion Function .............................................................................................................. 49

Detected Facial Features .................................................................................................................................. 50

Face Matching ........................................................................................................................ 53

FSDK_GetFaceTemplate Function .................................................................................................................. 54

FSDK_GetFaceTemplateInRegion Function ................................................................................................... 55

FSDK_GetFaceTemplateUsingEyes Function ................................................................................................. 56

FSDK_GetFaceTemplateUsingFeatures Function ........................................................................................... 57

FSDK_MatchFaces Function ........................................................................................................................... 58

FSDK_GetMatchingThresholdAtFAR Function .............................................................................................. 59

FSDK_GetMatchingThresholdAtFRR Function .............................................................................................. 60

Gender and Facial Expression Recognition ......................................................................... 61

FSDK_DetectFacialAttributeUsingFeatures Function ..................................................................................... 61

FSDK_GetValueConfidence Function ............................................................................................................. 62

Working with Cameras .......................................................................................................... 63

Data Types ....................................................................................................................................................... 64

FSDK_InitializeCapturing Function ................................................................................................................ 65

FSDK_FinalizeCapturing Function .................................................................................................................. 65

FSDK_SetCameraNaming Function ................................................................................................................ 66

FSDK_GetCameraList Function ...................................................................................................................... 67

FSDK_GetCameraListEx Function .................................................................................................................. 68

FSDK_FreeCameraList Function ..................................................................................................................... 68

FSDK_GetVideoFormatList Function ............................................................................................................. 69

FSDK_FreeVideoFormatList Function ............................................................................................................ 70

FSDK_SetVideoFormat Function .................................................................................................................... 70

FSDK_OpenVideoCamera Function ................................................................................................................ 71

FSDK_OpenIPVideoCamera Function ............................................................................................................ 72

FSDK_SetHTTPProxy Function ...................................................................................................................... 73

FSDK_GrabFrame Function ............................................................................................................................ 73

FSDK_CloseVideoCamera Function ............................................................................................................... 74

Tracker API: Face Recognition and Tracking in Video Streams ...................................... 75

What is Tracker API ......................................................................................................................................... 75

Understanding Identifiers ................................................................................................................................. 77

A subject can have several identifiers ......................................................................................................... 77

Merger of identifiers .................................................................................................................................... 77

When identifiers are not merged ................................................................................................................. 78

Similar identifiers ........................................................................................................................................ 78

Tracker Memory ............................................................................................................................................... 78

Memory available for each subject.............................................................................................................. 78

Imposing memory limits .............................................................................................................................. 79

How to set the memory limit ........................................................................................................................ 79

Tracker Parameters ........................................................................................................................................... 79

Face tracking parameters ............................................................................................................................ 79

Face recognition parameters ....................................................................................................................... 80

Facial feature tracking parameters ............................................................................................................. 80

Tuning for Optimal Performance ..................................................................................................................... 81

Using the API ................................................................................................................................................... 81

Locking identifiers ....................................................................................................................................... 82

Multiple camera support ............................................................................................................................. 82

Usage Scenario ............................................................................................................................................ 82

User Interaction with the System ..................................................................................................................... 83

Enrollment ................................................................................................................................................... 83

Dealing with false acceptances ................................................................................................................... 84

Saving and Loading Tracker Memory .............................................................................................................. 84

Recognition Performance ................................................................................................................................. 85

Performance measures ................................................................................................................................ 85

Understanding storage events ..................................................................................................................... 85

How to measure your rate of storage events ............................................................................................... 85

Understanding FAR ..................................................................................................................................... 85

Understanding R .......................................................................................................................................... 86

Choosing Threshold value ........................................................................................................................... 86

Gender and Facial Expression Recognition...................................................................................................... 87

Face, Eye and Facial Feature Tracking ............................................................................................................ 88

Counting the number of people ................................................................................................................... 88

Thread Safety ................................................................................................................................................... 88

FSDK_CreateTracker Function ........................................................................................................................ 88

FSDK_FreeTracker Function ........................................................................................................................... 89

FSDK_ClearTracker Function ......................................................................................................................... 90

FSDK_SetTrackerParameter Function ............................................................................................................. 90

FSDK_SetTrackerMultipleParameters Function .............................................................................................. 91

FSDK_GetTrackerParameter Function ............................................................................................................ 92

FSDK_FeedFrame Function............................................................................................................................. 93

FSDK_GetTrackerEyes Function ..................................................................................................................... 93

FSDK_GetTrackerFacialFeatures Function ..................................................................................................... 94

FSDK_GetTrackerFacePosition Function ........................................................................................................ 95

FSDK_GetTrackerFacialAttribute Function .................................................................................................... 96

FSDK_LockID Function .................................................................................................................................. 97

FSDK_UnlockID Function............................................................................................................................... 98

FSDK_GetName Function ............................................................................................................................... 99

FSDK_SetName Function .............................................................................................................................. 100

FSDK_GetIDReassignment Function ............................................................................................................ 100

FSDK_GetSimilarIDCount Function ............................................................................................................. 101

FSDK_GetSimilarIDList Function ................................................................................................................. 102