/// <summary>
/// 人脸检测(PS:检测RGB图像的人脸时，必须保证图像的宽度能被4整除，否则会失败)
/// </summary>
/// <param name="pEngine">引擎Handle</param>
/// <param name="imageInfo">图像数据</param>
/// <returns>人脸检测结果</returns>
public static ASF_MultiFaceInfo DetectFace(IntPtr pEngine, ImageInfo imageInfo)
{
ASF_MultiFaceInfo multiFaceInfo = new ASF_MultiFaceInfo();
IntPtr pMultiFaceInfo = MemoryUtil.Malloc(MemoryUtil.SizeOf <ASF_MultiFaceInfo>());
int retCode = ASFFunctions.ASFDetectFaces(pEngine, imageInfo.width, imageInfo.height, imageInfo.format, imageInfo.imgData, pMultiFaceInfo);
multiFaceInfo = MemoryUtil.PtrToStructure <ASF_MultiFaceInfo>(pMultiFaceInfo);
return(multiFaceInfo);
}
/// <summary>
/// 人脸检测/人脸追踪
/// </summary>
/// <param name="imageFormat">图片格式</param>
/// <param name="image">图片</param>
/// <param name="multiFaceInfo">多人脸对象</param>
/// <param name="detectModel">检测模式</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 ASFDetectFaces(Image image, out MultiFaceInfo multiFaceInfo, ASF_ImagePixelFormat imageFormat = ASF_ImagePixelFormat.ASVL_PAF_RGB24_B8G8R8, ASF_DetectModel detectModel = ASF_DetectModel.ASF_DETECT_MODEL_RGB)
{
int retCode = -1;
multiFaceInfo = new MultiFaceInfo();
//判断图像是否为空
if (image == null)
{
return(ErrorCodeUtil.IMAGE_IS_NULL);
}
ImageInfo imageInfo = new ImageInfo();
imageInfo = ASF_ImagePixelFormat.ASVL_PAF_RGB24_B8G8R8.Equals(imageFormat) ? ImageUtil.ReadBMP(image) : ImageUtil.ReadBMP_IR(image);
if (imageInfo == null)
{
return(ErrorCodeUtil.IMAGE_DATA_READ_FAIL);
}
ASF_MultiFaceInfo multiFaceInfoStruct = new ASF_MultiFaceInfo();
IntPtr pMultiFaceInfo = MemoryUtil.Malloc(MemoryUtil.SizeOf <ASF_MultiFaceInfo>());
//调用SDK接口
retCode = ASFFunctions.ASFDetectFaces(pEngine, imageInfo.width, imageInfo.height, imageInfo.format, imageInfo.imgData, pMultiFaceInfo);
if (retCode != 0)
{
MemoryUtil.FreeArray(imageInfo.imgData, pMultiFaceInfo);
return(retCode);
}
multiFaceInfoStruct = MemoryUtil.PtrToStructure <ASF_MultiFaceInfo>(pMultiFaceInfo);
MemoryUtil.FreeArray(imageInfo.imgData, pMultiFaceInfo);
//转化非托管内存到托管内存
multiFaceInfo.faceNum = multiFaceInfoStruct.faceNum;
if (multiFaceInfo.faceNum > 0)
{
if (multiFaceInfoStruct.faceID != IntPtr.Zero)
{
multiFaceInfo.faceID = new int[multiFaceInfo.faceNum];
Marshal.Copy(multiFaceInfoStruct.faceID, multiFaceInfo.faceID, 0, multiFaceInfo.faceNum);
}
multiFaceInfo.faceOrients = new int[multiFaceInfo.faceNum];
Marshal.Copy(multiFaceInfoStruct.faceOrients, multiFaceInfo.faceOrients, 0, multiFaceInfo.faceNum);
multiFaceInfo.faceRects = new MRECT[multiFaceInfo.faceNum];
for (int i = 0; i < multiFaceInfo.faceNum; i++)
{
multiFaceInfo.faceRects[i] = MemoryUtil.PtrToStructure <MRECT>(multiFaceInfoStruct.faceRects + MemoryUtil.SizeOf <MRECT>() * i);
}
}
return(retCode);
}
