/// <summary>
/// 性别检测
/// </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>保存性别估计结果结构体</returns>
public static ASF_GenderInfo GenderEstimation(IntPtr pEngine, ImageInfo imageInfo, ASF_MultiFaceInfo multiFaceInfo)
{
IntPtr pMultiFaceInfo = MemoryHelper.Malloc(MemoryHelper.SizeOf <ASF_MultiFaceInfo>());
MemoryHelper.StructureToPtr(multiFaceInfo, pMultiFaceInfo);
if (multiFaceInfo.faceNum == 0)
{
return(new ASF_GenderInfo());
}
//人脸信息处理
int retCode = ASFWrapper.ASFProcess(pEngine, imageInfo.width, imageInfo.height, imageInfo.format, imageInfo.imgData, pMultiFaceInfo, FaceEngineMask.ASF_GENDER);
//获取性别信息
IntPtr pGenderInfo = MemoryHelper.Malloc(MemoryHelper.SizeOf <ASF_GenderInfo>());
retCode = ASFWrapper.ASFGetGender(pEngine, pGenderInfo);
//Console.WriteLine("Get Gender Result:" + retCode);
SimplifiedLogHelper.WriteIntoSystemLog(nameof(Afw.Core.Helper.FaceProcessHelper), $"Get Gender Result:{retCode}");
ASF_GenderInfo genderInfo = MemoryHelper.PtrToStructure <ASF_GenderInfo>(pGenderInfo);
//释放内存
MemoryHelper.Free(pMultiFaceInfo);
MemoryHelper.Free(pGenderInfo);
return(genderInfo);
}
/// <summary>
/// 用矩形框标记图片指定区域
/// </summary>
/// <param name="image">图片</param>
/// <param name="startX">矩形框左上角X坐标</param>
/// <param name="startY">矩形框左上角Y坐标</param>
/// <param name="width">矩形框宽度</param>
/// <param name="height">矩形框高度</param>
/// <returns>标记后的图片</returns>
public static Image MarkRect(Image image, int startX, int startY, int width, int height)
{
Image clone = (Image)image.Clone();
Graphics g = Graphics.FromImage(clone);
try
{
Brush brush = new SolidBrush(Color.DeepPink);
Pen pen = new Pen(brush, 2);
pen.DashStyle = System.Drawing.Drawing2D.DashStyle.Dash;
g.DrawRectangle(pen, new Rectangle(startX, startY, width, height));
return(clone);
}
catch (Exception e)
{
//Console.WriteLine(e.Message);
SimplifiedLogHelper.WriteIntoSystemLog(nameof(Afw.Core.Helper.ImageHelper), e.ToString());
}
finally
{
g.Dispose();
}
return(null);
}
/// <summary>
/// 年龄检测
/// </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>年龄检测结构体</returns>
public static ASF_AgeInfo AgeEstimation(IntPtr pEngine, ImageInfo imageInfo, ASF_MultiFaceInfo multiFaceInfo, out int retCode)
{
retCode = -1;
IntPtr pMultiFaceInfo = MemoryHelper.Malloc(MemoryHelper.SizeOf <ASF_MultiFaceInfo>());
MemoryHelper.StructureToPtr(multiFaceInfo, pMultiFaceInfo);
if (multiFaceInfo.faceNum == 0)
{
return(new ASF_AgeInfo());
}
//人脸信息处理
retCode = ASFWrapper.ASFProcess(pEngine, imageInfo.width, imageInfo.height, imageInfo.format, imageInfo.imgData, pMultiFaceInfo, FaceEngineMask.ASF_AGE);
if (retCode == 0)
{
//获取年龄信息
IntPtr pAgeInfo = MemoryHelper.Malloc(MemoryHelper.SizeOf <ASF_AgeInfo>());
retCode = ASFWrapper.ASFGetAge(pEngine, pAgeInfo);
//Console.WriteLine("Get Age Result:" + retCode);
SimplifiedLogHelper.WriteIntoSystemLog(nameof(Afw.Core.Helper.FaceProcessHelper), $"Get Age Result:{retCode}");
ASF_AgeInfo ageInfo = MemoryHelper.PtrToStructure <ASF_AgeInfo>(pAgeInfo);
//释放内存
MemoryHelper.Free(pMultiFaceInfo);
MemoryHelper.Free(pAgeInfo);
return(ageInfo);
}
else
{
return(new ASF_AgeInfo());
}
}
/// <summary>
/// RGB活体检测
/// </summary>
/// <param name="pEngine"></param>
/// <param name="imageInfo"></param>
/// <param name="multiFaceInfo"></param>
/// <returns></returns>
public static ASF_LivenessInfo LivenessEstimation(IntPtr pEngine, ImageInfo imageInfo, ASF_MultiFaceInfo multiFaceInfo)
{
IntPtr pMultiFaceInfo = MemoryHelper.Malloc(MemoryHelper.SizeOf <ASF_MultiFaceInfo>());
MemoryHelper.StructureToPtr(multiFaceInfo, pMultiFaceInfo);
try
{
if (multiFaceInfo.faceNum == 0)
{
return(new ASF_LivenessInfo());
}
if (multiFaceInfo.faceNum > 1)
{
ASF_SingleFaceInfo singleFaceInfo = GetMaxFace(multiFaceInfo);
ASF_MultiFaceInfo multiFaceInfoNeo = new ASF_MultiFaceInfo();
multiFaceInfoNeo.faceRects = MemoryHelper.Malloc(MemoryHelper.SizeOf <MRECT>());
MemoryHelper.StructureToPtr <MRECT>(singleFaceInfo.faceRect, multiFaceInfoNeo.faceRects);
multiFaceInfoNeo.faceOrients = MemoryHelper.Malloc(MemoryHelper.SizeOf <int>());
MemoryHelper.StructureToPtr <int>(singleFaceInfo.faceOrient, multiFaceInfoNeo.faceOrients);
multiFaceInfoNeo.faceNum = 1;
MemoryHelper.StructureToPtr(multiFaceInfoNeo, pMultiFaceInfo);
}
//活体信息检测
int retCode = ASFWrapper.ASFProcess(pEngine, imageInfo.width, imageInfo.height, imageInfo.format, imageInfo.imgData, pMultiFaceInfo, FaceEngineMask.ASF_LIVENESS);
if (retCode == 0)
{
//获取活体信息
IntPtr pLivenessInfo = MemoryHelper.Malloc(MemoryHelper.SizeOf <ASF_LivenessInfo>());
retCode = ASFWrapper.ASFGetLivenessScore(pEngine, pLivenessInfo);
SimplifiedLogHelper.WriteIntoSystemLog(nameof(Afw.Core.Helper.FaceProcessHelper), $"Get Liveness Result:{retCode}");
ASF_LivenessInfo livenessInfo = MemoryHelper.PtrToStructure <ASF_LivenessInfo>(pLivenessInfo);
//释放内存
MemoryHelper.Free(pLivenessInfo);
return(livenessInfo);
}
else
{
return(new ASF_LivenessInfo());
}
}
catch (Exception ex)
{
Afw.Core.Helper.SimplifiedLogHelper.WriteIntoSystemLog(nameof(FaceProcessHelper), $"LivenessEstimation Exception => {ex.ToString()}");
}
finally
{
//释放内存
MemoryHelper.Free(pMultiFaceInfo);
MemoryHelper.Free(imageInfo.imgData);
}
return(new ASF_LivenessInfo());
}
/// <summary>
/// 获取图片信息
/// </summary>
/// <param name="image">图片</param>
/// <returns>成功或失败</returns>
public static ImageInfo ReadBMP(Image image)
{
ImageInfo imageInfo = new ImageInfo();
//将Image转换为Format24bppRgb格式的BMP
Bitmap bm = new Bitmap(image);
BitmapData data = bm.LockBits(new Rectangle(0, 0, bm.Width, bm.Height), ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb);
try
{
//位图中第一个像素数据的地址。它也可以看成是位图中的第一个扫描行
IntPtr ptr = data.Scan0;
//定义数组长度
int soureBitArrayLength = data.Height * Math.Abs(data.Stride);
byte[] sourceBitArray = new byte[soureBitArrayLength];
//将bitmap中的内容拷贝到ptr_bgr数组中
MemoryHelper.Copy(ptr, sourceBitArray, 0, soureBitArrayLength);
//填充引用对象字段值
imageInfo.width = data.Width;
imageInfo.height = data.Height;
imageInfo.format = ASF_ImagePixelFormat.ASVL_PAF_RGB24_B8G8R8;
//获取去除对齐位后度图像数据
int line = imageInfo.width * 3;
int pitch = Math.Abs(data.Stride);
int bgr_len = line * imageInfo.height;
byte[] destBitArray = new byte[bgr_len];
/*
* 图片像素数据在内存中是按行存储，一般图像库都会有一个内存对齐，在每行像素的末尾位置
* 每行的对齐位会使每行多出一个像素空间（三通道如RGB会多出3个字节，四通道RGBA会多出4个字节）
* 以下循环目的是去除每行末尾的对齐位，将有效的像素拷贝到新的数组
*/
for (int i = 0; i < imageInfo.height; ++i)
{
Array.Copy(sourceBitArray, i * pitch, destBitArray, i * line, line);
}
imageInfo.imgData = MemoryHelper.Malloc(destBitArray.Length);
MemoryHelper.Copy(destBitArray, 0, imageInfo.imgData, destBitArray.Length);
return(imageInfo);
}
catch (Exception e)
{
//Console.WriteLine(e.Message);
SimplifiedLogHelper.WriteIntoSystemLog(nameof(Afw.Core.Helper.ImageHelper), e.ToString());
}
finally
{
bm.UnlockBits(data);
}
return(null);
}
/// <summary>
/// 用矩形框标记图片指定区域，添加年龄和性别标注
/// </summary>
/// <param name="image">图片</param>
/// <param name="startX">矩形框左上角X坐标</param>
/// <param name="startY">矩形框左上角Y坐标</param>
/// <param name="width">矩形框宽度</param>
/// <param name="height">矩形框高度</param>
/// <param name="age">年龄</param>
/// <param name="gender">性别</param>
/// <returns>标记后的图片</returns>
public static Image MarkRectAndString(Image image, int startX, int startY, int width, int height, int age, int gender, int showWidth)
{
Image clone = (Image)image.Clone();
Graphics g = Graphics.FromImage(clone);
try
{
Brush brush = new SolidBrush(Color.DeepPink);
int penWidth = image.Width / showWidth;
Pen pen = new Pen(brush, penWidth > 1 ? 2 * penWidth : 2);
pen.DashStyle = System.Drawing.Drawing2D.DashStyle.Solid;
g.DrawRectangle(pen, new Rectangle(startX < 1 ? 0 : startX, startY < 1 ? 0 : startY, width, height));
string genderStr = "";
if (gender >= 0)
{
if (gender == 0)
{
genderStr = "男";
}
else if (gender == 1)
{
genderStr = "女";
}
}
int fontSize = image.Width / showWidth;
if (fontSize > 1)
{
int temp = 12;
for (int i = 0; i < fontSize; i++)
{
temp += 6;
}
fontSize = temp;
}
else if (fontSize == 1)
{
fontSize = 14;
}
else
{
fontSize = 12;
}
g.DrawString($"年龄:约{age}岁 性别:{genderStr}", new Font(FontFamily.GenericSerif, fontSize), brush, startX < 1 ? 0 : startX, (startY - 20) < 1 ? 0 : startY - 20);
return(clone);
}
catch (Exception e)
{
SimplifiedLogHelper.WriteIntoSystemLog(nameof(Afw.Core.Helper.ImageHelper), e.ToString());
}
finally
{
g.Dispose();
}
return(null);
}
/// <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 = ImageHelper.ReadBMP(image);
IntPtr pSingleFaceInfo = MemoryHelper.Malloc(MemoryHelper.SizeOf <ASF_SingleFaceInfo>());
MemoryHelper.StructureToPtr(singleFaceInfo, pSingleFaceInfo);
IntPtr pFaceFeature = MemoryHelper.Malloc(MemoryHelper.SizeOf <ASF_FaceFeature>());
int retCode = -1;
try
{
retCode = ASFWrapper.ASFFaceFeatureExtract(pEngine, imageInfo.width, imageInfo.height, imageInfo.format, imageInfo.imgData, pSingleFaceInfo, pFaceFeature);
}
catch (Exception e)
{
//Console.WriteLine(e.Message);
SimplifiedLogHelper.WriteIntoSystemLog(nameof(Afw.Core.Helper.FaceProcessHelper), $"Extract Feature Exception => {e.ToString()}");
}
//Console.WriteLine("FR Extract Feature result:" + retCode);
SimplifiedLogHelper.WriteIntoSystemLog(nameof(Afw.Core.Helper.FaceProcessHelper), $"FR Extract Feature result:{retCode} =>[{retCode.ToEnum<MError>().GetFieldDescription()}]");
if (retCode != 0)
{
//释放指针
MemoryHelper.Free(pSingleFaceInfo);
MemoryHelper.Free(pFaceFeature);
ASF_FaceFeature emptyFeature = new ASF_FaceFeature();
IntPtr pEmptyFeature = MemoryHelper.Malloc(MemoryHelper.SizeOf <ASF_FaceFeature>());
MemoryHelper.StructureToPtr(emptyFeature, pEmptyFeature);
return(pEmptyFeature);
}
//人脸特征feature过滤
ASF_FaceFeature faceFeature = MemoryHelper.PtrToStructure <ASF_FaceFeature>(pFaceFeature);
byte[] feature = new byte[faceFeature.featureSize];
MemoryHelper.Copy(faceFeature.feature, feature, 0, faceFeature.featureSize);
ASF_FaceFeature localFeature = new ASF_FaceFeature();
localFeature.feature = MemoryHelper.Malloc(feature.Length);
MemoryHelper.Copy(feature, 0, localFeature.feature, feature.Length);
localFeature.featureSize = feature.Length;
IntPtr pLocalFeature = MemoryHelper.Malloc(MemoryHelper.SizeOf <ASF_FaceFeature>());
MemoryHelper.StructureToPtr(localFeature, pLocalFeature);
//释放指针
MemoryHelper.Free(pSingleFaceInfo);
MemoryHelper.Free(pFaceFeature);
MemoryHelper.Free(imageInfo.imgData);
return(pLocalFeature);
}
/// <summary>
/// 剪裁图片
/// </summary>
/// <param name="src">原图片</param>
/// <param name="left">左坐标</param>
/// <param name="top">顶部坐标</param>
/// <param name="right">右坐标</param>
/// <param name="bottom">底部坐标</param>
/// <returns>剪裁后的图片</returns>
public static Image CutImage(Image src, int left, int top, int right, int bottom)
{
try
{
Bitmap srcBitmap = new Bitmap(src);
Bitmap dstBitmap = srcBitmap.Clone(new Rectangle(left, top, right - left, bottom - top), PixelFormat.DontCare);
return(dstBitmap);
}
catch (Exception e)
{
SimplifiedLogHelper.WriteIntoSystemLog(nameof(Afw.Core.Helper.ImageHelper), e.ToString());
}
return(null);
}
/// <summary>
/// 按指定宽高缩放图片
/// </summary>
/// <param name="image">原图片</param>
/// <param name="dstWidth">目标图片宽</param>
/// <param name="dstHeight">目标图片高</param>
/// <returns></returns>
public static Image ScaleImage(Image image, int dstWidth, int dstHeight)
{
Graphics g = null;
try
{
//按比例缩放
float scaleRate = GetWidthAndHeight(image.Width, image.Height, dstWidth, dstHeight);
int width = (int)(image.Width * scaleRate);
int height = (int)(image.Height * scaleRate);
//将宽度调整为4的整数倍
if (width % 4 != 0)
{
width = width - width % 4;
}
Bitmap destBitmap = new Bitmap(width, height);
g = Graphics.FromImage(destBitmap);
g.Clear(Color.Transparent);
//设置画布的描绘质量
g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
g.DrawImage(image, new Rectangle((width - width) / 2, (height - height) / 2, width, height), 0, 0, image.Width, image.Height, GraphicsUnit.Pixel);
//设置压缩质量
EncoderParameters encoderParams = new EncoderParameters();
long[] quality = new long[1];
quality[0] = 100;
EncoderParameter encoderParam = new EncoderParameter(Encoder.Quality, quality);
encoderParams.Param[0] = encoderParam;
return(destBitmap);
}
catch (Exception e)
{
SimplifiedLogHelper.WriteIntoSystemLog(nameof(Afw.Core.Helper.ImageHelper), e.ToString());
}
finally
{
if (g != null)
{
g.Dispose();
}
}
return(null);
}