public bool MatchBitmap(Bitmap bitmap, FaceModel fm)
{
Stopwatch sw = new Stopwatch();
sw.Start();
#region 图片转换 0.7-2微妙
var bmpData = bitmap.LockBits(new Rectangle(0, 0, bitmap.Width, bitmap.Height), ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb);
var imageData = new ImageData
{
u32PixelArrayFormat = 513,//Rgb24,
i32Width = bitmap.Width,
i32Height = bitmap.Height,
pi32Pitch = new int[4],
ppu8Plane = new IntPtr[4]
};
imageData.pi32Pitch[0] = bmpData.Stride;
imageData.ppu8Plane[0] = bmpData.Scan0;
sw.Stop();
faceResult.Score = sw.ElapsedTicks;
#endregion
try
{
#region 人脸检测 5-8毫秒
DetectResult pDetectResult = new DetectResult();
var ret = (ErrorCode)Detect.Detection(faceDetectEnginer, ref imageData, out pDetectResult.lfaceOrient);
if (ret != ErrorCode.Ok)
{
return(false);
}
var detectResult = (DetectResult)Marshal.PtrToStructure(pDetectResult.lfaceOrient, typeof(DetectResult));
if (detectResult.nFace == 0)
{
return(false);
}
var faceRect = (FaceRect)Marshal.PtrToStructure(detectResult.rcFace, typeof(FaceRect));
faceResult.Rectangle = new Rectangle((int)(faceRect.left * rateW), (int)(faceRect.top * rateH), (int)((faceRect.right - faceRect.left) * rateW), (int)((faceRect.bottom - faceRect.top) * rateH));
faceResult.RealRetangle = new Rectangle(faceRect.left, faceRect.top, (faceRect.right - faceRect.left), (faceRect.bottom - faceRect.top));
var faceOrient = (int)Marshal.PtrToStructure(detectResult.lfaceOrient, typeof(int));
#endregion
#region 获取人脸特征 160-180毫秒
var faceFeatureInput = new FaceFeatureInput
{
rcFace = faceRect,
lOrient = faceOrient
};
var faceModel = new FaceModel();
ret = (ErrorCode)Match.ExtractFeature(faceMatchEngine, ref imageData, ref faceFeatureInput, out faceModel);
#endregion
if (ret == ErrorCode.Ok)
{
if (registerClicked)
{
this.registerFeatureData = new byte[faceModel.lFeatureSize];
Marshal.Copy(faceModel.pbFeature, registerFeatureData, 0, faceModel.lFeatureSize);
}
#region 人脸识别（100张人脸） 17-20毫秒
float score = 0;
Match.FacePairMatch(faceMatchEngine, ref fm, ref faceModel, out score);
if (score > 0.5)
{
return(true);
}
#endregion
}
}
finally
{
bitmap.UnlockBits(bmpData);
}
return(false);
}
private void MatchFrame()
{
#region 获取图片 1毫秒
var bitmap = this.VideoPlayer.GetCurrentVideoFrame();
#endregion
Stopwatch sw = new Stopwatch();
sw.Start();
#region 图片转换 0.7-2微妙
var bmpData = bitmap.LockBits(new Rectangle(0, 0, bitmap.Width, bitmap.Height), ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb);
var imageData = new ImageData
{
u32PixelArrayFormat = 513,//Rgb24,
i32Width = bitmap.Width,
i32Height = bitmap.Height,
pi32Pitch = new int[4],
ppu8Plane = new IntPtr[4]
};
imageData.pi32Pitch[0] = bmpData.Stride;
imageData.ppu8Plane[0] = bmpData.Scan0;
sw.Stop();
faceResult.Score = sw.ElapsedTicks;
#endregion
try
{
#region 人脸检测 5-8毫秒
DetectResult pDetectResult = new DetectResult();
var ret = (ErrorCode)Detect.Detection(faceDetectEnginer, ref imageData, out pDetectResult.lfaceOrient);
if (ret != ErrorCode.Ok)
{
return;
}
var detectResult = (DetectResult)Marshal.PtrToStructure(pDetectResult.lfaceOrient, typeof(DetectResult));
if (detectResult.nFace == 0)
{
return;
}
var faceRect = (FaceRect)Marshal.PtrToStructure(detectResult.rcFace, typeof(FaceRect));
faceResult.Rectangle = new Rectangle((int)(faceRect.left * rateW), (int)(faceRect.top * rateH), (int)((faceRect.right - faceRect.left) * rateW), (int)((faceRect.bottom - faceRect.top) * rateH));
faceResult.RealRetangle = new Rectangle(faceRect.left, faceRect.top, (faceRect.right - faceRect.left), (faceRect.bottom - faceRect.top));
var faceOrient = (int)Marshal.PtrToStructure(detectResult.lfaceOrient, typeof(int));
#endregion
#region 性别识别基本准确 年龄识别误差太大，没什么应用场景
//ExtraFaceInput faceInput = new ExtraFaceInput()
//{
// lFaceNumber = facesDetect.nFace,
// pFaceRectArray = Marshal.AllocHGlobal(Marshal.SizeOf(faceRect)),
// pFaceOrientArray = Marshal.AllocHGlobal(Marshal.SizeOf(faceOrient))
//};
//Marshal.StructureToPtr(faceRect, faceInput.pFaceRectArray, false);
//Marshal.StructureToPtr(faceOrient, faceInput.pFaceOrientArray, false);
//var ageResult = Face.Age.ASAE_FSDK_AgeEstimation_Preview(faceAgeEngine, ref imageData, ref faceInput, out var pAgeRes);
//var ages = pAgeRes.pResult.ToStructArray<int>(pAgeRes.lFaceNumber);
//var genderResult = Face.Gender.ASGE_FSDK_GenderEstimation_Preview(faceGenderEngine, ref imageData, ref faceInput, out var pGenderRes);
//var genders = pGenderRes.pResult.ToStructArray<int>(pGenderRes.lFaceNumber);
//faceResult.Age = ages[0];
//faceResult.Gender = genders[0];
//Marshal.FreeHGlobal(faceInput.pFaceOrientArray);
//Marshal.FreeHGlobal(faceInput.pFaceRectArray);
#endregion
#region 获取人脸特征 160-180毫秒
var faceFeatureInput = new FaceFeatureInput
{
rcFace = faceRect,
lOrient = faceOrient
};
var faceModel = new FaceModel();
ret = (ErrorCode)Match.ExtractFeature(faceMatchEngine, ref imageData, ref faceFeatureInput, out faceModel);
#endregion
if (ret == ErrorCode.Ok)
{
if (registerClicked)
{
this.registerFeatureData = new byte[faceModel.lFeatureSize];
Marshal.Copy(faceModel.pbFeature, registerFeatureData, 0, faceModel.lFeatureSize);
}
#region 人脸识别（100张人脸） 17-20毫秒
bool isdetected = false;
foreach (var item in this.Faces.OrderByDescending(i => i.OrderId))
{
var fm = item.FaceModel;
float score = 0;
Match.FacePairMatch(faceMatchEngine, ref fm, ref faceModel, out score);
if (score > 0.5)
{
item.OrderId = DateTime.Now.Ticks;
faceResult.ID = item.FaceID;
isdetected = true;
break;
}
}
this.IsDetected = isdetected;
#endregion
}
}
finally
{
bitmap.UnlockBits(bmpData);
if (registerClicked)
{
this.OnCaputurePicture(new CapturePictureEventArgs(bitmap, this.faceResult.RealRetangle, this.registerFeatureData));
registerClicked = false;
}
else
{
bitmap.Dispose();
}
}
}