/// <summary>
/// To obtain the face with the largest area in multiple face detection results
/// </summary>
/// <param name="multiFaceInfo">Face detection results</param>
/// <returns>The largest area of face information</returns>
public static ASF_SingleFaceInfo GetMaxFace(ASF_MultiFaceInfo multiFaceInfo)
{
ASF_SingleFaceInfo singleFaceInfo = new ASF_SingleFaceInfo();
singleFaceInfo.faceRect = new MRECT();
singleFaceInfo.faceOrient = 1;
int maxArea = 0;
int index = -1;
for (int i = 0; i < multiFaceInfo.faceNum; i++)
{
try
{
MRECT rect = MemoryUtil.PtrToStructure <MRECT>(multiFaceInfo.faceRects + MemoryUtil.SizeOf <MRECT>() * i);
int area = (rect.right - rect.left) * (rect.bottom - rect.top);
if (maxArea <= area)
{
maxArea = area;
index = i;
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
if (index != -1)
{
singleFaceInfo.faceRect = MemoryUtil.PtrToStructure <MRECT>(multiFaceInfo.faceRects + MemoryUtil.SizeOf <MRECT>() * index);
singleFaceInfo.faceOrient = MemoryUtil.PtrToStructure <int>(multiFaceInfo.faceOrients + MemoryUtil.SizeOf <int>() * index);
}
return(singleFaceInfo);
}
public static ASF_MultiFaceInfo DetectFace(IntPtr pEngine, Image image)
{
lock (locks)
{
ASF_MultiFaceInfo multiFaceInfo = new ASF_MultiFaceInfo();
if (image != null)
{
if (image == null)
{
return(multiFaceInfo);
}
ImageInfo imageInfo = ImageUtil.ReadBMP(image);
if (imageInfo == null)
{
return(multiFaceInfo);
}
multiFaceInfo = DetectFace(pEngine, imageInfo);
MemoryUtil.Free(imageInfo.imgData);
return(multiFaceInfo);
}
else
{
return(multiFaceInfo);
}
}
}
/// <summary>
/// Age detection
/// </summary>
/// <param name="pEngine">Engine Handle</param>
/// <param name="imageInfo">Image data</param>
/// <param name="multiFaceInfo">Face detection results</param>
/// <returns>Age detection structures</returns>
public static ASF_AgeInfo AgeEstimation(IntPtr pEngine, ImageInfo imageInfo, ASF_MultiFaceInfo multiFaceInfo)
{
IntPtr pMultiFaceInfo = MemoryUtil.Malloc(MemoryUtil.SizeOf <ASF_MultiFaceInfo>());
MemoryUtil.StructureToPtr(multiFaceInfo, pMultiFaceInfo);
if (multiFaceInfo.faceNum == 0)
{
return(new ASF_AgeInfo());
}
//Face information processing
int retCode = ASFFunctions.ASFProcess(pEngine, imageInfo.width, imageInfo.height, imageInfo.format, imageInfo.imgData, pMultiFaceInfo, FaceEngineMask.ASF_AGE);
//Get age information
IntPtr pAgeInfo = MemoryUtil.Malloc(MemoryUtil.SizeOf <ASF_AgeInfo>());
retCode = ASFFunctions.ASFGetAge(pEngine, pAgeInfo);
Console.WriteLine("Get Age Result:" + retCode);
ASF_AgeInfo ageInfo = MemoryUtil.PtrToStructure <ASF_AgeInfo>(pAgeInfo);
//Release memory
MemoryUtil.Free(pMultiFaceInfo);
MemoryUtil.Free(pAgeInfo);
return(ageInfo);
}
/// <summary>
/// Gender tests
/// </summary>
/// <param name="pEngine">Engine Handle</param>
/// <param name="imageInfo">Image data</param>
/// <param name="multiFaceInfo">Face detection results</param>
/// <returns>Save the gender detection result structure</returns>
public static ASF_GenderInfo GenderEstimation(IntPtr pEngine, ImageInfo imageInfo, ASF_MultiFaceInfo multiFaceInfo, out int retCode)
{
retCode = -1;
IntPtr pMultiFaceInfo = MemoryUtil.Malloc(MemoryUtil.SizeOf <ASF_MultiFaceInfo>());
MemoryUtil.StructureToPtr(multiFaceInfo, pMultiFaceInfo);
if (multiFaceInfo.faceNum == 0)
{
return(new ASF_GenderInfo());
}
//Face information processing
retCode = ASFFunctions.ASFProcess(pEngine, imageInfo.width, imageInfo.height, imageInfo.format, imageInfo.imgData, pMultiFaceInfo, FaceEngineMask.ASF_GENDER);
if (retCode == 0)
{
//Access to gender information
IntPtr pGenderInfo = MemoryUtil.Malloc(MemoryUtil.SizeOf <ASF_GenderInfo>());
retCode = ASFFunctions.ASFGetGender(pEngine, pGenderInfo);
Console.WriteLine("Get Gender Result:" + retCode);
ASF_GenderInfo genderInfo = MemoryUtil.PtrToStructure <ASF_GenderInfo>(pGenderInfo);
//Release memory
MemoryUtil.Free(pMultiFaceInfo);
MemoryUtil.Free(pGenderInfo);
return(genderInfo);
}
else
{
return(new ASF_GenderInfo());
}
}
/// <summary>
/// Face 3D Angle detection
/// </summary>
/// <param name="pEngine">Engine Handle</param>
/// <param name="imageInfo">Image data</param>
/// <param name="multiFaceInfo">Face detection results</param>
/// <returns>Save face 3D Angle detection results structure</returns>
public static ASF_Face3DAngle Face3DAngleDetection(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;
return(new ASF_Face3DAngle());
}
//Face information processing
retCode = ASFFunctions.ASFProcess(pEngine, imageInfo.width, imageInfo.height, imageInfo.format, imageInfo.imgData, pMultiFaceInfo, FaceEngineMask.ASF_FACE3DANGLE);
if (retCode == 0)
{
//Get the 3D Angle of the face
IntPtr pFace3DAngleInfo = MemoryUtil.Malloc(MemoryUtil.SizeOf <ASF_Face3DAngle>());
retCode = ASFFunctions.ASFGetFace3DAngle(pEngine, pFace3DAngleInfo);
Console.WriteLine("Get Face3D Angle Result:" + retCode);
ASF_Face3DAngle face3DAngle = MemoryUtil.PtrToStructure <ASF_Face3DAngle>(pFace3DAngleInfo);
//Release memory
MemoryUtil.Free(pMultiFaceInfo);
MemoryUtil.Free(pFace3DAngleInfo);
return(face3DAngle);
}
else
{
return(new ASF_Face3DAngle());
}
}
/// <summary>
/// Extracting facial features
/// </summary>
/// <param name="pEngine">Engine Handle</param>
/// <param name="imageInfo">picture data</param>
/// <param name="multiFaceInfo">Face detection results</param>
/// <returns>Save the face feature structure pointer</returns>
public static IntPtr ExtractFeature(IntPtr pEngine, ImageInfo imageInfo, ASF_MultiFaceInfo multiFaceInfo, out ASF_SingleFaceInfo singleFaceInfo)
{
singleFaceInfo = new ASF_SingleFaceInfo();
if (multiFaceInfo.faceRects == null)
{
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);
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)
{
//Release the pointer
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);
}
//Face feature feature filtering
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);
//Release pointer
MemoryUtil.Free(pSingleFaceInfo);
MemoryUtil.Free(pFaceFeature);
return(pLocalFeature);
}
/// <summary>
/// Face detection
/// </summary>
/// <param name="pEngine">Engine Handle</param>
/// <param name="imageInfo">image data</param>
/// <returns>Face detection results</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);
MemoryUtil.Free(pMultiFaceInfo);
return(multiFaceInfo);
}
/// <summary>
/// Infrared in vivo detection
/// </summary>
/// <param name="pEngine">Engine Handle</param>
/// <param name="imageInfo">Image data</param>
/// <param name="multiFaceInfo">In vivo test results</param>
/// <returns>Preserve the structure of in vivo detection results</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;
//Release memory
MemoryUtil.Free(pMultiFaceInfo);
return(new ASF_LivenessInfo());
}
try
{
//Face information processing
retCode = ASFFunctions.ASFProcess_IR(pEngine, imageInfo.width, imageInfo.height, imageInfo.format, imageInfo.imgData, pMultiFaceInfo, FaceEngineMask.ASF_IR_LIVENESS);
if (retCode == 0)
{
//Obtain in vivo test results
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);
//Release memory
MemoryUtil.Free(pMultiFaceInfo);
MemoryUtil.Free(pLivenessInfo);
return(livenessInfo);
}
else
{
//Release memory
MemoryUtil.Free(pMultiFaceInfo);
return(new ASF_LivenessInfo());
}
}
catch
{
retCode = -1;
//Release memory
MemoryUtil.Free(pMultiFaceInfo);
return(new ASF_LivenessInfo());
}
}
/// <summary>
/// Single face gender test
/// </summary>
/// <param name="pEngine">Engine Handle</param>
/// <param name="image">Image</param>
/// <param name="singleFaceInfo">Single face information</param>
/// <returns>Gender estimation results</returns>
public static ASF_GenderInfo GenderEstimation(IntPtr pEngine, Image image, ASF_SingleFaceInfo singleFaceInfo)
{
ImageInfo imageInfo = ImageUtil.ReadBMP(image);
if (imageInfo == null)
{
return(new ASF_GenderInfo());
}
ASF_MultiFaceInfo multiFaceInfo = new ASF_MultiFaceInfo();
multiFaceInfo.faceRects = MemoryUtil.Malloc(MemoryUtil.SizeOf <MRECT>());
MemoryUtil.StructureToPtr <MRECT>(singleFaceInfo.faceRect, multiFaceInfo.faceRects);
multiFaceInfo.faceOrients = MemoryUtil.Malloc(MemoryUtil.SizeOf <int>());
MemoryUtil.StructureToPtr <int>(singleFaceInfo.faceOrient, multiFaceInfo.faceOrients);
multiFaceInfo.faceNum = 1;
ASF_GenderInfo genderInfo = GenderEstimation(pEngine, imageInfo, multiFaceInfo);
MemoryUtil.Free(imageInfo.imgData);
return(genderInfo);
}
/// <summary>
/// Get picture information
/// </summary>
/// <param name="image">photograph</param>
/// <returns>Success or failure</returns>
public static ImageInfo ReadBMP(Image image)
{
ImageInfo imageInfo = new ImageInfo();
Image <Bgr, byte> my_Image = null;
Bitmap bitmap = null;
try
{
bitmap = new Bitmap(image);
if (bitmap == null)
{
return(null);
}
my_Image = new Image <Bgr, byte>(bitmap);
imageInfo.format = ASF_ImagePixelFormat.ASVL_PAF_RGB24_B8G8R8;
imageInfo.width = my_Image.Width;
imageInfo.height = my_Image.Height;
imageInfo.imgData = MemoryUtil.Malloc(my_Image.Bytes.Length);
MemoryUtil.Copy(my_Image.Bytes, 0, imageInfo.imgData, my_Image.Bytes.Length);
return(imageInfo);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
finally
{
if (my_Image != null)
{
my_Image.Dispose();
}
if (bitmap != null)
{
bitmap.Dispose();
}
}
return(null);
}
/// <summary>
/// Get image IR information
/// </summary>
/// <param name="image">photograph</param>
/// <returns>Success or failure</returns>
public static ImageInfo ReadBMP_IR(Bitmap bitmap)
{
ImageInfo imageInfo = new ImageInfo();
Image <Bgr, byte> my_Image = null;
Image <Gray, byte> gray_image = null;
try
{
//Image grayscale conversion
my_Image = new Image <Bgr, byte>(bitmap);
gray_image = my_Image.Convert <Gray, byte>(); //Graying function
imageInfo.format = ASF_ImagePixelFormat.ASVL_PAF_GRAY;
imageInfo.width = gray_image.Width;
imageInfo.height = gray_image.Height;
imageInfo.imgData = MemoryUtil.Malloc(gray_image.Bytes.Length);
MemoryUtil.Copy(gray_image.Bytes, 0, imageInfo.imgData, gray_image.Bytes.Length);
return(imageInfo);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
finally
{
if (my_Image != null)
{
my_Image.Dispose();
}
if (gray_image != null)
{
gray_image.Dispose();
}
}
return(null);
}
/// <summary>
/// Extracting facial features
/// </summary>
/// <param name="pEngine">Engine Handle</param>
/// <param name="image">image</param>
/// <returns>Save the face feature structure pointer</returns>
public static IntPtr ExtractFeature(IntPtr pEngine, Image image, out ASF_SingleFaceInfo singleFaceInfo)
{
if (image.Width > 1536 || image.Height > 1536)
{
image = ImageUtil.ScaleImage(image, 1536, 1536);
}
else
{
image = ImageUtil.ScaleImage(image, image.Width, image.Height);
}
if (image == null)
{
singleFaceInfo = new ASF_SingleFaceInfo();
ASF_FaceFeature emptyFeature = new ASF_FaceFeature();
IntPtr pEmptyFeature = MemoryUtil.Malloc(MemoryUtil.SizeOf <ASF_FaceFeature>());
MemoryUtil.StructureToPtr(emptyFeature, pEmptyFeature);
return(pEmptyFeature);
}
ImageInfo imageInfo = ImageUtil.ReadBMP(image);
if (imageInfo == null)
{
singleFaceInfo = new ASF_SingleFaceInfo();
ASF_FaceFeature emptyFeature = new ASF_FaceFeature();
IntPtr pEmptyFeature = MemoryUtil.Malloc(MemoryUtil.SizeOf <ASF_FaceFeature>());
MemoryUtil.StructureToPtr(emptyFeature, pEmptyFeature);
return(pEmptyFeature);
}
ASF_MultiFaceInfo multiFaceInfo = DetectFace(pEngine, imageInfo);
singleFaceInfo = new ASF_SingleFaceInfo();
IntPtr pFaceModel = ExtractFeature(pEngine, imageInfo, multiFaceInfo, out singleFaceInfo);
MemoryUtil.Free(imageInfo.imgData);
return(pFaceModel);
}
/// <summary>
/// Extract single face feature
/// </summary>
/// <param name="pEngine">Engine Handle</param>
/// <param name="image">photograph</param>
/// <param name="singleFaceInfo">Single face information</param>
/// <returns>Features of single face</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)
{
//Release the pointer
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);
}
//Face feature feature filtering
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);
//Release the pointer
MemoryUtil.Free(pSingleFaceInfo);
MemoryUtil.Free(pFaceFeature);
MemoryUtil.Free(imageInfo.imgData);
return(pLocalFeature);
}