/// <summary>
/// 检测图片中的人脸，返回识别到的人脸数量。
/// </summary>
/// <param name="bitmap">图片</param>
/// <param name="faceInfos">识别到的所有人脸的信息</param>
/// <returns></returns>
public static int DetectFaces(Bitmap bitmap, ref FaceInfo[] faceInfos)
{
Bitmap bmp = BitmapTo24Rgb(bitmap); //将图像转换为24位rgb图像
bmp.SetResolution(96, 96); //设置dpi=96
byte[] imageByte = BitmapToByteBuffer(bmp, out int width, out int height, out int stride);
StringBuilder json = new StringBuilder(500);
int faceCount = SDK.DetectFacesByte(imageByte, width, height, stride, json);
JsonSerializer serializer = new JsonSerializer();
if (faceCount > 0)
{
faceInfos = serializer.Deserialize <FaceInfo[]>(new JsonTextReader(new StringReader(json.ToString())));
return(faceCount);
}
else
{
faceInfos = new FaceInfo[0];
return(faceCount);
}
}
public extern static int DetectFaceByte(byte[] imageByte, int width, int height, int stride, ref FaceInfo faceInfo);
public extern static int DetectFace(string path, ref FaceInfo faceInfo);
/// <summary>
/// 检测图片中的人脸，返回识别到的人脸的数量。
/// </summary>
/// <param name="path">图片的路径</param>
/// <param name="faceInfo">识别到的第一张人脸</param>
/// <returns></returns>
public static int DetectFace(string path, ref FaceInfo faceInfo)
{
return(SDK.DetectFace(path, ref faceInfo));
}