/// <summary>
/// 人脸特征比对
/// </summary>
/// <param name="faceFeature1">特征1</param>
/// <param name="faceFeature2">特征2</param>
/// <param name="similarity">相似度</param>
/// <param name="compareModel">ASF_LIFE_PHOTO：用于生活照之间的特征比对；ASF_ID_PHOTO：用于证件照或证件照和生活照之间的特征比对</param>
/// <returns>返回0表示正常；返回负数请根据ErrorCodeUtil类注释查看；其他值请在官网-帮助中心查询</returns>
public int ASFFaceFeatureCompare(FaceFeature faceFeature1, FaceFeature faceFeature2, out float similarity, ASF_CompareModel compareModel = ASF_CompareModel.ASF_LIFE_PHOTO)
{
similarity = 0f;
if (faceFeature1 == null || faceFeature2 == null)
{
return(ErrorCodeUtil.FEATURE_IS_NULL);
}
#region 将特征对象转化为特征结构体，再转化为非托管内存
ASF_FaceFeature asfFeatureStruct1 = new ASF_FaceFeature();
asfFeatureStruct1.featureSize = faceFeature1.featureSize;
asfFeatureStruct1.feature = MemoryUtil.Malloc(asfFeatureStruct1.featureSize);
MemoryUtil.Copy(faceFeature1.feature, 0, asfFeatureStruct1.feature, asfFeatureStruct1.featureSize);
IntPtr pFeature1 = MemoryUtil.Malloc(MemoryUtil.SizeOf <ASF_FaceFeature>());
MemoryUtil.StructureToPtr(asfFeatureStruct1, pFeature1);
ASF_FaceFeature asfFeatureStruct2 = new ASF_FaceFeature();
asfFeatureStruct2.featureSize = faceFeature2.featureSize;
asfFeatureStruct2.feature = MemoryUtil.Malloc(asfFeatureStruct2.featureSize);
MemoryUtil.Copy(faceFeature2.feature, 0, asfFeatureStruct2.feature, asfFeatureStruct2.featureSize);
IntPtr pFeature2 = MemoryUtil.Malloc(MemoryUtil.SizeOf <ASF_FaceFeature>());
MemoryUtil.StructureToPtr(asfFeatureStruct2, pFeature2);
#endregion
//调用SDK接口
int retCode = ASFFunctions.ASFFaceFeatureCompare(pEngine, pFeature1, pFeature2, ref similarity, compareModel);
MemoryUtil.FreeArray(pFeature1, pFeature2, asfFeatureStruct1.feature, asfFeatureStruct2.feature);
return(retCode);
}
/// <summary>
/// 比较两个特征值的相似度,返回相似度
/// </summary>
/// <param name="feature1"></param>
/// <param name="feature2"></param>
/// <returns></returns>
private float CompareTwoFeatures(IntPtr feature1, IntPtr feature2)
{
float similarity = 0.0f;
//调用人脸匹配方法，进行匹配
ASFFunctions.ASFFaceFeatureCompare(pVideoImageEngine, feature1, feature2, ref similarity);
return(similarity);
}
/// <summary>
/// 匹配事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void matchBtn_Click(object sender, EventArgs e)
{
if (imagesFeatureList.Count == 0)
{
MessageBox.Show("请注册人脸!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
if (image1Feature == IntPtr.Zero)
{
if (picImageCompare.Image == null)
{
MessageBox.Show("请选择识别图!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
else
{
MessageBox.Show("比对失败，识别图未提取到特征值!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
return;
}
float compareSimilarity = 0f;
int compareNum = 0;
AppendText(string.Format("------------------------------开始比对，时间:{0}------------------------------\r\n", DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss:ms")));
for (int i = 0; i < peoples.Count; i++)
{
foreach (KeyValuePair <string, IntPtr> ptr in peoples[i].images)
{
IntPtr feature = ptr.Value;
//imagesFeatureList[i];
float similarity = 0f;
long t1 = DateTime.Now.ToFileTime();
int ret = ASFFunctions.ASFFaceFeatureCompare(pEngine, image1Feature, feature, ref similarity);
long t2 = DateTime.Now.ToFileTime();
AppendText(string.Format("与{0}比对结果:{1}\r\n", peoples[i].name, similarity));
imageList.Items[i].Text = string.Format("{0}号({1})", i, similarity);
if (similarity > compareSimilarity)
{
compareSimilarity = similarity;
compareNum = i;
MessageBox.Show("欢迎你。{0}", peoples[i].name);
}
}
}
if (compareSimilarity > 0)
{
lblCompareInfo.Text = " " + compareNum + "号," + compareSimilarity;
}
AppendText(string.Format("------------------------------比对结束，时间:{0}------------------------------\r\n", DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss:ms")));
}
/// <summary>
/// 匹配事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void matchBtn_Click(object sender, EventArgs e)
{
if (imagesFeatureList.Count == 0)
{
MessageBox.Show("请注册人脸!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
if (image1Feature == IntPtr.Zero)
{
if (picImageCompare.Image == null)
{
MessageBox.Show("请选择识别图!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
else
{
MessageBox.Show("比对失败，识别图未提取到特征值!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
return;
}
//标记已经做了匹配比对，在开启视频的时候要清除比对结果
isCompare = true;
float compareSimilarity = 0f;
int compareNum = 0;
AppendText(string.Format("------------------------------开始比对，时间:{0}------------------------------\r\n", DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss:ms")));
for (int i = 0; i < imagesFeatureList.Count; i++)
{
IntPtr feature = imagesFeatureList[i];
float similarity = 0f;
int ret = ASFFunctions.ASFFaceFeatureCompare(pImageEngine, image1Feature, feature, ref similarity);
//增加异常值处理
if (similarity.ToString().IndexOf("E") > -1)
{
similarity = 0f;
}
AppendText(string.Format("与{0}号比对结果:{1}\r\n", i, similarity));
imageList.Items[i].Text = string.Format("{0}号({1})", i, similarity);
if (similarity > compareSimilarity)
{
compareSimilarity = similarity;
compareNum = i;
}
}
if (compareSimilarity > 0)
{
lblCompareInfo.Text = " " + compareNum + "号," + compareSimilarity;
}
AppendText(string.Format("------------------------------比对结束，时间:{0}------------------------------\r\n", DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss:ms")));
}
/// <summary>
/// 得到feature比较结果
/// </summary>
/// <param name="feature"></param>
/// <returns></returns>
private int compareFeature(IntPtr feature, out float similarity)
{
int result = -1;
similarity = 0f;
//如果人脸库不为空，则进行人脸匹配
if (imagesFeatureList != null && imagesFeatureList.Count > 0)
{
for (int i = 0; i < imagesFeatureList.Count; i++)
{
//调用人脸匹配方法，进行匹配
ASFFunctions.ASFFaceFeatureCompare(pVideoRGBImageEngine, feature, imagesFeatureList[i], ref similarity);
if (similarity >= threshold)
{
result = i;
break;
}
}
}
return(result);
}
/// <summary>
/// 得到feature比较结果
/// </summary>
/// <param name="pVideoFaceFeature"></param>
/// <returns></returns>
private int compareFeatureFromDB(IntPtr pVideoFaceFeature, out float similarity)
{
int result = -1;
similarity = 0f;
//如果人脸库不为空，则进行人脸匹配
if (imagesFeatureList != null && imagesFeatureList.Count > 0)
{
for (int i = 0; i < imagesFeatureList.Count; i++)
{
//调用人脸匹配方法，进行人脸特征匹配
ASFFunctions.ASFFaceFeatureCompare(pVideoImageEngine, pVideoFaceFeature, imagesFeatureList[i], ref similarity);
if (similarity >= threshold)// 相似度大于阈值，输出人脸序号，暂时默认阈值为0.8
{
result = i;
break;
}
}
}
return(result);
}
private void btnSelectImageToRecognize_Click(object sender, EventArgs e)
{
OpenFileDialog openFileDialog = new OpenFileDialog();
openFileDialog.Title = "Select";
openFileDialog.Filter = "Image File|*.bmp;*.jpg;*.jpeg;*.png";
//openFileDialog.Multiselect = true;
openFileDialog.FileName = string.Empty;
if (openFileDialog.ShowDialog() == DialogResult.OK)
{
var numStart = imagePathList.Count;
string fileName = openFileDialog.FileName;
if (!checkImage(fileName))
{
return;
}
image1Feature = IntPtr.Zero;
pictureBoxToRecognize.ImageLocation = fileName;
Image srcImage = ImageUtil.readFromFile(fileName);
ASF_SingleFaceInfo singleFaceInfo = new ASF_SingleFaceInfo();
//提取人脸特征
image1Feature = FaceUtil.ExtractFeature(pImageEngine, srcImage, out singleFaceInfo);
if (imagesFeatureList.Count == 0)
{
MessageBox.Show("请注册人脸!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
if (image1Feature == IntPtr.Zero)
{
if (pictureBoxToRecognize.Image == null)
{
MessageBox.Show("请选择识别图!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
else
{
MessageBox.Show("比对失败，识别图未提取到特征值!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
return;
}
for (int i = 0; i < imagesFeatureDictionary.Count; i++)
{
IntPtr feature = imagesFeatureDictionary.ElementAt(i).Key;
float similarity = 0f;
int ret = ASFFunctions.ASFFaceFeatureCompare(pImageEngine, image1Feature, feature, ref similarity);
//增加异常值处理
if (similarity.ToString().IndexOf("E") > -1)
{
similarity = 0f;
}
if (similarity > threshold)
{
string name = imagesFeatureDictionary.ElementAt(i).Value;
AppendText("对比结果：" + name + " 可信度：" + similarity + "\r\n");
return;
}
}
AppendText("无结果\r\n");
}
}
/// <summary>
/// 匹配
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
public void MatchImage()
{
if (ImagesFeatureList.Count == 0)
{
MessageBox.Show("请注册人脸!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
if (ImageFeature == IntPtr.Zero)
{
if (FRC.FIView._faceIdentificationImageBox.Source == null)
{
MessageBox.Show("请选择识别图!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
else
{
MessageBox.Show("比对失败，识别图未提取到特征值!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
return;
}
//标记已经做了匹配比对，在开启视频的时候要清除比对结果
isCompare = true;
float compareSimilarity = 0f;
int compareNum = -1;
AppendText(string.Format("------------------------------开始比对，时间:{0}------------------------------\r\n", DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss:ms")));
ImagesFeatureList.Clear();
foreach (var item in FRC.FRVM.PIVMList)
{
ImagesFeatureList.Add(item.FaceCharacteristics);
}
for (int i = 0; i < ImagesFeatureList.Count; i++)
{
IntPtr feature = ImagesFeatureList[i];
float similarity = 0f;
int ret = ASFFunctions.ASFFaceFeatureCompare(pImageEngine, ImageFeature, feature, ref similarity);
//增加异常值处理
if (similarity.ToString().IndexOf("E") > -1)
{
similarity = 0f;
}
AppendText(string.Format("与{0}号比对结果:{1}\r\n", i, similarity));
//选择最合适的图片
if (similarity > compareSimilarity && similarity >= threshold)
{
compareSimilarity = similarity;
compareNum = i;
}
//_imageList.Items[i].Text = string.Format("{0}号({1})", i, similarity);
}
FRC.FIVM.PersonInfoUC.DataContext = FRC.FRVM.PIVMList.SingleOrDefault(x => x.FaceCharacteristics == ImagesFeatureList[compareNum]);
if (compareSimilarity > 0)
{
//_lblCompareInfo.Text = " " + compareNum + "号," + compareSimilarity;
}
AppendText(string.Format("------------------------------比对结束，时间:{0}------------------------------\r\n", DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss:ms")));
}
public void CompareFeature(IntPtr sourceFeature, IntPtr libFeature, ref float similarity)
{
ASFFunctions.ASFFaceFeatureCompare(pVideoRGBImageEngine, sourceFeature, libFeature, ref similarity);
}