[+ 2.7.1] Visual Face 기반 장치에서 얼굴을 스캔하고 이미지 및 템플릿 데이터를 추출합니다.

#include "BS_API.h"
 
int BS2_ScanFaceEx(void* context, uint32_t deviceId, BS2FaceEx* faceEx, uint8_t enrollmentThreshold, OnReadyToScan ptrReadyToScan);

• [In] context : Context
• [In] deviceId : 장치 식별자
• [Out] faceEx : 얼굴 데이터를 저장할 포인터
• [In] enrollmentThreshold : 얼굴 등록시 요구되는 threshold 값. BS2FaceConfig::enrollThreshold 참조
• [Out] ptrReadyToScan : 얼굴 스캔 준비가 완료되었을 때 호출되는 콜백 함수

성공적으로 수행될 경우 BS_SDK_SUCCESS를 반환하고, 에러가 발생할 경우 상응하는 에러 코드를 반환합니다.

C++

int UserControl::scanFaceEx(BS2_DEVICE_ID id, BS2FaceEx* ptrFace, uint8_t& numOfFace)
{
	if (!ptrFace)
		return BS_SDK_ERROR_INVALID_PARAM;
 
	const int MAX_RETRY = 2;
	int sdkResult = BS_SDK_SUCCESS;
	int retryCount = 0;
 
	while (retryCount < MAX_RETRY)
	{
		sdkResult = BS2_ScanFaceEx(context_, id, ptrFace, BS2_FACE_ENROLL_THRESHOLD_DEFAULT, onReadyToScanFace);
		if (BS_SDK_SUCCESS != sdkResult)
		{
			TRACE("BS2_ScanFaceEx call failed: %d", sdkResult);
			retryCount++;
		}
		else
		{
			numOfFace++;
			break;
		}
	}
 
	return sdkResult;
}
 
BS2_ReleaseObject(uidObj);

C#

if (Util.IsYes())
{
	Console.WriteLine("How many faceEx would you like to register?");
	Console.Write(">> ");
	int numOfFace = Util.GetInput(1);
	if (0 < numOfFace)
	{
        int structSize = Marshal.SizeOf(typeof(BS2FaceExWarped));
        BS2FaceExWarped[] faceEx = Util.AllocateStructureArray<BS2FaceExWarped>(1);
		userBlob[0].faceExObjs = Marshal.AllocHGlobal(structSize * numOfFace);
        IntPtr curFaceExObjs = userBlob[0].faceExObjs;
        cbFaceOnReadyToScan = new API.OnReadyToScan(ReadyToScanForFace);
 
		for (int index = 0; index < numOfFace;)
		{
			sdkResult = (BS2ErrorCode)API.BS2_ScanFaceEx(sdkContext, deviceID, faceEx, (byte)BS2FaceEnrollThreshold.THRESHOLD_DEFAULT, cbFaceOnReadyToScan);
			if (BS2ErrorCode.BS_SDK_SUCCESS != sdkResult)
				Console.WriteLine("BS2_ScanFaceEx call failed: %d", sdkResult);
			else
			{
                userBlob[0].user.numFaces++;
				index++;
                faceEx[0].faceIndex = (byte)index;
                Marshal.StructureToPtr(faceEx[0], curFaceExObjs, false);
                curFaceExObjs += structSize;
 
                Thread.Sleep(100);
			}
		}
 
        cbFaceOnReadyToScan = null;
	}
}