/// <summary>
/// 人脸检测(PS:检测RGB图像的人脸时，必须保证图像的宽度能被4整除，否则会失败)
/// </summary>
/// <param name="pEngine">引擎Handle</param>
/// <param name="imageInfo">图像数据</param>
/// <returns>人脸检测结果</returns>
public static ASF_MultiFaceInfo DetectFace(IntPtr pEngine, ImageInfo imageInfo)
{
ASF_MultiFaceInfo multiFaceInfo = new ASF_MultiFaceInfo();
IntPtr pMultiFaceInfo = MemoryUtil.Malloc(MemoryUtil.SizeOf <ASF_MultiFaceInfo>());
int retCode = ASFFunctions.ASFDetectFaces(pEngine, imageInfo.width, imageInfo.height, imageInfo.format, imageInfo.imgData, pMultiFaceInfo);
if (retCode != 0)
{
MemoryUtil.Free(pMultiFaceInfo);
return(multiFaceInfo);
}
multiFaceInfo = MemoryUtil.PtrToStructure <ASF_MultiFaceInfo>(pMultiFaceInfo);
return(multiFaceInfo);
}
/// <summary>
/// 提取人脸特征
/// </summary>
/// <param name="pEngine">引擎Handle</param>
/// <param name="imageInfo">图像数据</param>
/// <param name="multiFaceInfo">人脸检测结果</param>
/// <returns>保存人脸特征结构体指针</returns>
public static IntPtr ExtractFeature(IntPtr pEngine, ImageInfo imageInfo, ASF_MultiFaceInfo multiFaceInfo, out ASF_SingleFaceInfo singleFaceInfo)
{
singleFaceInfo = new ASF_SingleFaceInfo();
singleFaceInfo.faceRect = MemoryUtil.PtrToStructure <MRECT>(multiFaceInfo.faceRects);
singleFaceInfo.faceOrient = MemoryUtil.PtrToStructure <int>(multiFaceInfo.faceOrients);
IntPtr pSingleFaceInfo = MemoryUtil.Malloc(MemoryUtil.SizeOf <ASF_SingleFaceInfo>());
MemoryUtil.StructureToPtr(singleFaceInfo, pSingleFaceInfo);
IntPtr pFaceFeature = MemoryUtil.Malloc(MemoryUtil.SizeOf <ASF_FaceFeature>());
int retCode = ASFFunctions.ASFFaceFeatureExtract(pEngine, imageInfo.width, imageInfo.height, imageInfo.format, imageInfo.imgData, pSingleFaceInfo, pFaceFeature);
Console.WriteLine("FR Extract Feature result:" + retCode);
if (retCode != 0)
{
//释放指针
MemoryUtil.Free(pSingleFaceInfo);
MemoryUtil.Free(pFaceFeature);
ASF_FaceFeature emptyFeature = new ASF_FaceFeature();
IntPtr pEmptyFeature = MemoryUtil.Malloc(MemoryUtil.SizeOf <ASF_FaceFeature>());
MemoryUtil.StructureToPtr(emptyFeature, pEmptyFeature);
return(pEmptyFeature);
}
//人脸特征feature过滤
ASF_FaceFeature faceFeature = MemoryUtil.PtrToStructure <ASF_FaceFeature>(pFaceFeature);
byte[] feature = new byte[faceFeature.featureSize];
MemoryUtil.Copy(faceFeature.feature, feature, 0, faceFeature.featureSize);
ASF_FaceFeature localFeature = new ASF_FaceFeature();
localFeature.feature = MemoryUtil.Malloc(feature.Length);
MemoryUtil.Copy(feature, 0, localFeature.feature, feature.Length);
localFeature.featureSize = feature.Length;
IntPtr pLocalFeature = MemoryUtil.Malloc(MemoryUtil.SizeOf <ASF_FaceFeature>());
MemoryUtil.StructureToPtr(localFeature, pLocalFeature);
//释放指针
MemoryUtil.Free(pSingleFaceInfo);
MemoryUtil.Free(pFaceFeature);
return(pLocalFeature);
}
/// <summary>
/// 红外活体检测
/// </summary>
/// <param name="pEngine">引擎Handle</param>
/// <param name="imageInfo">图像数据</param>
/// <param name="multiFaceInfo">活体检测结果</param>
/// <returns>保存活体检测结果结构体</returns>
public static ASF_LivenessInfo LivenessInfo_IR(IntPtr pEngine, ImageInfo imageInfo, ASF_MultiFaceInfo multiFaceInfo, out int retCode)
{
IntPtr pMultiFaceInfo = MemoryUtil.Malloc(MemoryUtil.SizeOf <ASF_MultiFaceInfo>());
MemoryUtil.StructureToPtr(multiFaceInfo, pMultiFaceInfo);
if (multiFaceInfo.faceNum == 0)
{
retCode = -1;
//释放内存
MemoryUtil.Free(pMultiFaceInfo);
return(new ASF_LivenessInfo());
}
try
{
//人脸信息处理
retCode = ASFFunctions.ASFProcess_IR(pEngine, imageInfo.width, imageInfo.height, imageInfo.format, imageInfo.imgData, pMultiFaceInfo, FaceEngineMask.ASF_IR_LIVENESS);
if (retCode == 0)
{
//获取活体检测结果
IntPtr pLivenessInfo = MemoryUtil.Malloc(MemoryUtil.SizeOf <ASF_LivenessInfo>());
retCode = ASFFunctions.ASFGetLivenessScore_IR(pEngine, pLivenessInfo);
Console.WriteLine("Get Liveness Result:" + retCode);
ASF_LivenessInfo livenessInfo = MemoryUtil.PtrToStructure <ASF_LivenessInfo>(pLivenessInfo);
//释放内存
MemoryUtil.Free(pMultiFaceInfo);
MemoryUtil.Free(pLivenessInfo);
return(livenessInfo);
}
else
{
//释放内存
MemoryUtil.Free(pMultiFaceInfo);
return(new ASF_LivenessInfo());
}
}
catch
{
retCode = -1;
//释放内存
MemoryUtil.Free(pMultiFaceInfo);
return(new ASF_LivenessInfo());
}
}
/// <summary>
/// 人脸检测
/// 检测RGB图像的人脸时，必须保证图像的宽度能被4整除，否则会失败
/// </summary>
/// <param name="pEngine">引擎</param>
/// <param name="imageInfo">图像数据</param>
/// <returns></returns>
public static ASF_MultiFaceInfo DetectFace(IntPtr pEngine, ImageInfo imageInfo)
{
//创建多张人脸的数据结构体
ASF_MultiFaceInfo multiFaceInfo = new ASF_MultiFaceInfo();
//创建一个指针可以指向MultiFaceInfo结构
IntPtr pMultiFaceInfo = MemoryUtil.Malloc(MemoryUtil.SizeOf <ASF_MultiFaceInfo>());
int retCode = ASFFunctions.ASFDetectFaces(pEngine, imageInfo.width, imageInfo.height, imageInfo.format, imageInfo.imgData, pMultiFaceInfo);
//当人脸识别错误，则释放内存，返回一个默认的结构
if (retCode != 0)
{
MemoryUtil.Free(pMultiFaceInfo);
pMultiFaceInfo = IntPtr.Zero;
return(multiFaceInfo);
}
//将从C++程序集得到的多人脸结构内存转义成C#的多人脸结构体中
multiFaceInfo = MemoryUtil.PtrToStructure <ASF_MultiFaceInfo>(pMultiFaceInfo);
MemoryUtil.Free(pMultiFaceInfo);
pMultiFaceInfo = IntPtr.Zero;
return(multiFaceInfo);
}
/// <summary>
/// 从图像信息中提取人脸特征
/// </summary>
/// <param name="pEngine">虹软引擎句柄</param>
/// <param name="imageInfo">图像信息</param>
/// <param name="multiFaceInfo">人脸检测结果</param>
/// <param name="singleFaceInfo">单个人脸的位置</param>
/// <returns>保存人脸特征结构体指针</returns>
public static IntPtr ExtractFeatrue(IntPtr pEngine, ImageInfo imageInfo, ASF_MultiFaceInfo multiFaceInfo, out ASF_SingleFaceInfo singleFaceInfo)
{
singleFaceInfo = new ASF_SingleFaceInfo();
//如果没有检测到人脸
if (multiFaceInfo.faceRects == null)
{
//创建一个空的特征结构体
ASF_FaceFeature emptyFeature = new ASF_FaceFeature();
IntPtr pEmptyFeature = MemoryUtil.Malloc(MemoryUtil.SizeOf <ASF_FaceFeature>());
MemoryUtil.StructureToPtr(emptyFeature, pEmptyFeature);
return(pEmptyFeature);
}
singleFaceInfo.faceRect = MemoryUtil.PtrToStructure <MRECT>(multiFaceInfo.faceRects);
singleFaceInfo.faceOrient = MemoryUtil.PtrToStructure <int>(multiFaceInfo.faceOrients);
IntPtr pSingleFaceInfo = MemoryUtil.Malloc(MemoryUtil.SizeOf <ASF_SingleFaceInfo>());
MemoryUtil.StructureToPtr(singleFaceInfo, pSingleFaceInfo);
//创建一个人脸特征结构体指针
IntPtr pFaceFeature = MemoryUtil.Malloc(MemoryUtil.SizeOf <ASF_FaceFeature>());
//执行特征识别运算
int retCode = ASFFunctions.ASFFaceFeatureExtract(pEngine, imageInfo.width, imageInfo.height, imageInfo.format, imageInfo.imgData, pSingleFaceInfo, pFaceFeature);
Console.WriteLine("FR Extract Feature result: " + retCode);
//当执行结果不是成功
if (retCode != 0)
{
MemoryUtil.Free(pSingleFaceInfo);
MemoryUtil.Free(pFaceFeature);
pSingleFaceInfo = IntPtr.Zero;
pFaceFeature = IntPtr.Zero;
ASF_FaceFeature emptyFeature = new ASF_FaceFeature();
IntPtr pEmptyFeature = MemoryUtil.Malloc(MemoryUtil.SizeOf <ASF_FaceFeature>());
MemoryUtil.StructureToPtr(emptyFeature, pEmptyFeature);
return(pEmptyFeature);
}
#region 人脸特征深度复制
ASF_FaceFeature faceFeature = MemoryUtil.PtrToStructure <ASF_FaceFeature>((pFaceFeature));
byte[] feature = new byte[faceFeature.featureSize];
//将特征值提取出来(类型转换成C#的类型
MemoryUtil.Copy(faceFeature.feature, feature, 0, faceFeature.featureSize);
ASF_FaceFeature localFeature = new ASF_FaceFeature();
localFeature.feature = MemoryUtil.Malloc(feature.Length);
MemoryUtil.Copy(feature, 0, localFeature.feature, feature.Length);
localFeature.featureSize = feature.Length;
IntPtr pLocalFeature = MemoryUtil.Malloc(MemoryUtil.SizeOf <ASF_FaceFeature>());
MemoryUtil.StructureToPtr(localFeature, pLocalFeature);
MemoryUtil.Free(pSingleFaceInfo);
MemoryUtil.Free(pFaceFeature);
pSingleFaceInfo = IntPtr.Zero;
pFaceFeature = IntPtr.Zero;
#endregion
return(pLocalFeature);
}
/// <summary>
/// 提取单人脸特征
/// </summary>
/// <param name="pEngine">人脸识别引擎</param>
/// <param name="image">图片</param>
/// <param name="singleFaceInfo">单人脸信息</param>
/// <returns>单人脸特征</returns>
public static IntPtr ExtractFeature(IntPtr pEngine, Image image, ASF_SingleFaceInfo singleFaceInfo)
{
ImageInfo imageInfo = ImageUtil.ReadBMP(image);
if (imageInfo == null)
{
ASF_FaceFeature emptyFeature = new ASF_FaceFeature();
IntPtr pEmptyFeature = MemoryUtil.Malloc(MemoryUtil.SizeOf <ASF_FaceFeature>());
MemoryUtil.StructureToPtr(emptyFeature, pEmptyFeature);
return(pEmptyFeature);
}
IntPtr pSingleFaceInfo = MemoryUtil.Malloc(MemoryUtil.SizeOf <ASF_SingleFaceInfo>());
MemoryUtil.StructureToPtr(singleFaceInfo, pSingleFaceInfo);
IntPtr pFaceFeature = MemoryUtil.Malloc(MemoryUtil.SizeOf <ASF_FaceFeature>());
int retCode = -1;
try
{
retCode = ASFFunctions.ASFFaceFeatureExtract(pEngine, imageInfo.width, imageInfo.height, imageInfo.format, imageInfo.imgData, pSingleFaceInfo, pFaceFeature);
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
Console.WriteLine("FR Extract Feature result:" + retCode);
if (retCode != 0)
{
//释放指针
MemoryUtil.Free(pSingleFaceInfo);
MemoryUtil.Free(pFaceFeature);
MemoryUtil.Free(imageInfo.imgData);
ASF_FaceFeature emptyFeature = new ASF_FaceFeature();
IntPtr pEmptyFeature = MemoryUtil.Malloc(MemoryUtil.SizeOf <ASF_FaceFeature>());
MemoryUtil.StructureToPtr(emptyFeature, pEmptyFeature);
return(pEmptyFeature);
}
//人脸特征feature过滤
ASF_FaceFeature faceFeature = MemoryUtil.PtrToStructure <ASF_FaceFeature>(pFaceFeature);
byte[] feature = new byte[faceFeature.featureSize];
MemoryUtil.Copy(faceFeature.feature, feature, 0, faceFeature.featureSize);
ASF_FaceFeature localFeature = new ASF_FaceFeature();
localFeature.feature = MemoryUtil.Malloc(feature.Length);
MemoryUtil.Copy(feature, 0, localFeature.feature, feature.Length);
localFeature.featureSize = feature.Length;
IntPtr pLocalFeature = MemoryUtil.Malloc(MemoryUtil.SizeOf <ASF_FaceFeature>());
MemoryUtil.StructureToPtr(localFeature, pLocalFeature);
//释放指针
MemoryUtil.Free(pSingleFaceInfo);
MemoryUtil.Free(pFaceFeature);
MemoryUtil.Free(imageInfo.imgData);
return(pLocalFeature);
}
