public static int FaceDetect(byte[] image, HIWITFaceRegion[] faceRect, ref int faceNumber, int minFaceSize, int maxFaceSize, HIWITFaceRect? detectROI = null)
{
if (image == null || faceRect == null) return HIWIT_ERR_ILLEGAL;
IntPtr roiPtr = IntPtr.Zero;
IntPtr faceRectPtr = IntPtr.Zero;
try {
if (detectROI != null) {
roiPtr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(HIWITFaceRect)));
Marshal.StructureToPtr(detectROI, roiPtr, false);
}
faceRectPtr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(HIWITFaceRegion)) * faceRect.Length);
int r = HIWITFaceDetect(APPIP, APPKEY, image, image.Length, faceRectPtr, faceRect.Length, ref faceNumber, minFaceSize, maxFaceSize, roiPtr);
if (r == HIWIT_ERR_NONE && faceNumber != 0) {
for (int i = 0; i < faceNumber; i++) {
IntPtr tmPtr = new IntPtr(faceRectPtr.ToInt64() + Marshal.SizeOf(typeof(HiwitLib.HIWITFaceRegion)) * i);
faceRect[i] = (HiwitLib.HIWITFaceRegion)Marshal.PtrToStructure(tmPtr, typeof(HiwitLib.HIWITFaceRegion));
}
}
return r;
}
finally {
Marshal.FreeHGlobal(roiPtr);
Marshal.FreeHGlobal(faceRectPtr);
}
}
public static int FaceAlignmentFromFaceRegion(byte[] image, HIWITFaceRegion faceRegion, ref HIWITFaceInfo faceInfo)
{
if (image == null) return HIWIT_ERR_ILLEGAL;
IntPtr regionPtr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(HIWITFaceRegion)));
Marshal.StructureToPtr(faceRegion, regionPtr, false);
IntPtr infoPtr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(HIWITFaceInfo)));
try {
int r = HIWITFaceAlignmentFromFaceRegion(APPIP, APPKEY, image, image.Length, regionPtr, infoPtr);
if (r == HIWIT_ERR_NONE) faceInfo = (HIWITFaceInfo)Marshal.PtrToStructure(infoPtr, typeof(HIWITFaceInfo));
return r;
}
finally {
Marshal.FreeHGlobal(regionPtr);
Marshal.FreeHGlobal(infoPtr);
}
}
