实例介绍
【实例简介】人脸检测
【实例截图】
【核心代码】参照原吗
using FaceDiscern.AFD;
using FaceDiscern.Tools;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Windows.Forms;
namespace FaceDiscern
{
public partial class FrmSingleImg : Form
{
//int detectSize = 40 * 1024 * 1024;
int detectSize = 800 * 1024 * 1024;
int nScale = 16;
int nMaxFaceNum = 10;
IntPtr detectEngine = IntPtr.Zero;
string appId = "8AfCENQF8J3FmW7zFUks4JejnbtE4tNUjPsNXxmNtfsU";
string sdkFDKey = "E55tWjN63WiwSF7RqG4pykULS2z1CuCMYJYE7PK2vzz9";
public FrmSingleImg()
{
InitializeComponent();
IntPtr pMem = Marshal.AllocHGlobal(detectSize);
int retCode = AFDFunction.AFD_FSDK_InitialFaceEngine(appId, sdkFDKey, pMem, detectSize, ref detectEngine, (int)AFD_FSDK_OrientPriority.AFD_FSDK_OPF_0_HIGHER_EXT, nScale, nMaxFaceNum);
if (retCode != 0)
{
MessageBox.Show("引擎初始化失败:错误码为:" retCode);
this.Close();
}
}
private void FrmMain_Load(object sender, EventArgs e)
{
}
private void btnOpenImg_Click(object sender, EventArgs e)
{
OpenFileDialog openFile = new OpenFileDialog();
openFile.Filter = "图片文件|*.bmp;*.jpg;*.jpeg;*.png|所有文件|*.*;";
openFile.Multiselect = false;
openFile.FileName = "";
if (openFile.ShowDialog() == DialogResult.OK)
{
Image image = Image.FromFile(openFile.FileName);
var bitmap = new Bitmap(image);
imgBox.Image = bitmap;
//TODO:完成下面的方法
//checkAndMarkFace(imgBox.Image);
int width = 0;
int height = 0;
int pitch = 0;
byte[] imageData = readBmp(bitmap, ref width, ref height, ref pitch);
IntPtr imageDataPtr = Marshal.AllocHGlobal(imageData.Length);
Marshal.Copy(imageData, 0, imageDataPtr, imageData.Length);
ASVLOFFSCREEN offInput = new ASVLOFFSCREEN();
offInput.u32PixelArrayFormat = 513;
offInput.ppu8Plane = new IntPtr[4];
offInput.ppu8Plane[0] = imageDataPtr;
offInput.i32Width = width;
offInput.i32Height = height;
offInput.pi32Pitch = new int[4];
offInput.pi32Pitch[0] = pitch;
IntPtr offInputPtr = Marshal.AllocHGlobal(Marshal.SizeOf(offInput));
Marshal.StructureToPtr(offInput, offInputPtr, false);
AFD_FSDK_FACERES faceRes = new AFD_FSDK_FACERES();
IntPtr faceResPtr = Marshal.AllocHGlobal(Marshal.SizeOf(faceRes));
int detectResult = AFDFunction.AFD_FSDK_StillImageFaceDetection(detectEngine, offInputPtr, ref faceResPtr);
faceRes = (AFD_FSDK_FACERES)Marshal.PtrToStructure(faceResPtr, typeof(AFD_FSDK_FACERES));
#region 原
//MRECT rect = (MRECT)Marshal.PtrToStructure(faceRes.rcFace, typeof(MRECT));
//Image imgResult = CutFace(bitmap, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top);
//imgHead.Image = imgResult;
//imgBox.Image = DrawRectangleInPicture(imgBox.Image, new Point(rect.left, rect.top), new Point(rect.right, rect.bottom), Color.Red, 2, DashStyle.Dash);
#endregion
#region 修改
MRECT[] rectArr = new MRECT[faceRes.nFace];
long longPtr = faceRes.rcFace.ToInt64();
for (int i = 0; i < rectArr.Length; i )
{
IntPtr rectPtr = new IntPtr(longPtr);
var a = Marshal.PtrToStructure(rectPtr, typeof(MRECT));
var b = (MRECT)a;
rectArr[i] = b;
longPtr = Marshal.SizeOf(typeof(MRECT));
}
imgBox.Image = DrawRectangleInPicture2(imgBox.Image, rectArr, Color.Red, 2, DashStyle.Dash);
if (rectArr.Length > 0)
{
MRECT rect = rectArr[0];
Image imgResult = CutFace(bitmap, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top);
imgHead.Image = imgResult;
}
else
{
imgHead.Image = null;
}
#endregion
}
}
private byte[] readBmp(Bitmap image, ref int width, ref int height, ref int pitch)
{
//将Bitmap锁定到系统内存中,获得BitmapData
BitmapData data = image.LockBits(new Rectangle(0, 0, image.Width, image.Height), ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb);
//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
Marshal.Copy(ptr, sourceBitArray, 0, soureBitArrayLength);
width = data.Width;
height = data.Height;
pitch = Math.Abs(data.Stride);
int line = width * 3;
int bgr_len = line * height;
byte[] destBitArray = new byte[bgr_len];
for (int i = 0; i < height; i)
{
Array.Copy(sourceBitArray, i * pitch, destBitArray, i * line, line);
}
pitch = line;
image.UnlockBits(data);
return destBitArray;
}
public static Bitmap CutFace(Bitmap srcImage, int StartX, int StartY, int iWidth, int iHeight)
{
if (srcImage == null)
{
return null;
}
int w = srcImage.Width;
int h = srcImage.Height;
if (StartX >= w || StartY >= h)
{
return null;
}
if (StartX iWidth > w)
{
iWidth = w - StartX;
}
if (StartY iHeight > h)
{
iHeight = h - StartY;
}
try
{
Bitmap bmpOut = new Bitmap(iWidth, iHeight, PixelFormat.Format24bppRgb);
Graphics g = Graphics.FromImage(bmpOut);
g.DrawImage(srcImage, new Rectangle(0, 0, iWidth, iHeight), new Rectangle(StartX, StartY, iWidth, iHeight), GraphicsUnit.Pixel);
g.Dispose();
return bmpOut;
}
catch
{
return null;
}
}
private Image DrawRectangleInPicture(Image bmp, Point p0, Point p1, Color RectColor, int LineWidth, DashStyle ds)
{
if (bmp == null) return null;
Graphics g = Graphics.FromImage(bmp);
Brush brush = new SolidBrush(RectColor);
Pen pen = new Pen(brush, LineWidth);
pen.DashStyle = ds;
g.DrawRectangle(pen, new Rectangle(p0.X, p0.Y, Math.Abs(p0.X - p1.X), Math.Abs(p0.Y - p1.Y)));
g.Dispose();
return bmp;
}
private Image DrawRectangleInPicture2(Image bmp, MRECT[] rectArr, Color RectColor, int LineWidth, DashStyle ds)
{
if (bmp == null) return null;
Graphics g = Graphics.FromImage(bmp);
Brush brush = new SolidBrush(RectColor);
Pen pen = new Pen(brush, LineWidth);
pen.DashStyle = ds;
for (int i = 0; i < rectArr.Length; i )
{
Point p0 = new Point(rectArr[i].left, rectArr[i].top);
Point p1 = new Point(rectArr[i].right, rectArr[i].bottom);
g.DrawRectangle(pen, new Rectangle(p0.X, p0.Y, Math.Abs(p0.X - p1.X), Math.Abs(p0.Y - p1.Y)));
}
g.Dispose();
return bmp;
}
private void button1_Click(object sender, EventArgs e)
{
OpenFileDialog openFile = new OpenFileDialog();
openFile.Filter = "图片文件|*.bmp;*.jpg;*.jpeg;*.png|所有文件|*.*;";
openFile.Multiselect = false;
openFile.FileName = "";
if (openFile.ShowDialog() == DialogResult.OK)
{
Image image = Image.FromFile(openFile.FileName);
var bitmap = new Bitmap(image);
imgBox.Image = bitmap;
//TODO:完成下面的方法
//checkAndMarkFace(imgBox.Image);
int width = 0;
int height = 0;
int pitch = 0;
byte[] imageData = readBmp(bitmap, ref width, ref height, ref pitch);
//imgHead.Image = ImgHelper.ToGrayBitmap2(imageData, width, height);
var img = ImgHelper.ToGrayBitmap2(imageData, width, height);
imgBox.Image = img;
return;
IntPtr imageDataPtr = Marshal.AllocHGlobal(imageData.Length);
Marshal.Copy(imageData, 0, imageDataPtr, imageData.Length);
ASVLOFFSCREEN offInput = new ASVLOFFSCREEN();
offInput.u32PixelArrayFormat = 513;
offInput.ppu8Plane = new IntPtr[4];
offInput.ppu8Plane[0] = imageDataPtr;
offInput.i32Width = width;
offInput.i32Height = height;
offInput.pi32Pitch = new int[4];
offInput.pi32Pitch[0] = pitch;
IntPtr offInputPtr = Marshal.AllocHGlobal(Marshal.SizeOf(offInput));
Marshal.StructureToPtr(offInput, offInputPtr, false);
AFD_FSDK_FACERES faceRes = new AFD_FSDK_FACERES();
IntPtr faceResPtr = Marshal.AllocHGlobal(Marshal.SizeOf(faceRes));
int detectResult = AFDFunction.AFD_FSDK_StillImageFaceDetection(detectEngine, offInputPtr, ref faceResPtr);
faceRes = (AFD_FSDK_FACERES)Marshal.PtrToStructure(faceResPtr, typeof(AFD_FSDK_FACERES));
#region 修改
MRECT[] rectArr = new MRECT[faceRes.nFace];
long longPtr = faceRes.rcFace.ToInt64();
for (int i = 0; i < rectArr.Length; i )
{
IntPtr rectPtr = new IntPtr(longPtr);
var a = Marshal.PtrToStructure(rectPtr, typeof(MRECT));
var b = (MRECT)a;
rectArr[i] = b;
longPtr = Marshal.SizeOf(typeof(MRECT));
}
imgBox.Image = DrawRectangleInPicture2(imgBox.Image, rectArr, Color.Red, 2, DashStyle.Dash);
if (rectArr.Length > 0)
{
MRECT rect = rectArr[0];
Image imgResult = CutFace(bitmap, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top);
imgHead.Image = imgResult;
}
else
{
imgHead.Image = null;
}
#endregion
}
}
}
}
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