static void FlipIfLeftFacing(
Shape& shape, // io
EYAW eyaw, // in
int ncols) // in
{
if (IsLeftFacing(eyaw))
shape = FlipShape(shape, ncols);
}
void PinnedStartShapeAndRoi( // use the pinned landmarks to init the start shape
Shape& startshape, // out: the start shape (in ROI frame)
Image& face_roi, // out: ROI around face, possibly rotated upright
DetPar& detpar_roi, // out: detpar wrt to face_roi
DetPar& detpar, // out: detpar wrt to img
Shape& pinned_roi, // out: pinned arg translated to ROI frame
const Image& img, // in: the image (grayscale)
const vec_Mod& mods, // in: a vector of models, one for each yaw range
const Shape& pinned) // in: manually pinned landmarks
{
double rot, yaw;
EstRotAndYawFrom5PointShape(rot, yaw, As5PointShape(pinned, mods[0]->MeanShape_()));
const EYAW eyaw = DegreesAsEyaw(yaw, NSIZE(mods));
const int imod = EyawAsModIndex(eyaw, mods); // select ASM model based on yaw
if (trace_g)
lprintf("%-6.6s yaw %3.0f rot %3.0f ", EyawAsString(eyaw), yaw, rot);
pinned_roi = pinned; // use pinned_roi as a temp shape we can change
Image workimg(img); // possibly flipped image
if (IsLeftFacing(eyaw)) // left facing? (our models are for right facing faces)
{
pinned_roi = FlipShape(pinned_roi, workimg.cols);
FlipImgInPlace(workimg);
}
const Mod* mod = mods[ABS(imod)];
startshape = PinMeanShape(pinned_roi, mod->MeanShape_());
startshape = mod->ConformShapeToMod_Pinned_(startshape, pinned_roi);
detpar = PseudoDetParFromStartShape(startshape, rot, yaw, NSIZE(mods));
if (IsLeftFacing(eyaw))
detpar.rot *= -1;
FaceRoiAndDetPar(face_roi, detpar_roi, workimg, detpar, false);
startshape = ImgShapeToRoiFrame(startshape, detpar_roi, detpar);
pinned_roi = ImgShapeToRoiFrame(pinned_roi, detpar_roi, detpar);
// following line not strictly necessary because don't actually need eyes/mouth
InitDetParEyeMouthFromShape(detpar_roi, startshape);
if (IsLeftFacing(eyaw))
{
detpar = FlipDetPar(detpar, img.cols);
detpar.rot = -detpar.rot;
detpar_roi.x += 2. * (face_roi.cols/2. - detpar_roi.x);
}
}
Shape RoiShapeToImgFrame( // return shape in image frame
const Shape& shape, // in: shape in roi frame
const Image& face_roi, // in
const DetPar& detpar_roi, // in: detpar wrt the ROI
const DetPar& detpar) // in: detpar wrt the image
{
Shape outshape(shape.clone());
if (IsLeftFacing(detpar.eyaw))
outshape = FlipShape(outshape, face_roi.cols);
if (Valid(detpar.rot) && detpar.rot)
{
const MAT rotmat =
getRotationMatrix2D(cv::Point2f(float(detpar_roi.x),
float(detpar_roi.y)),
detpar.rot, 1.);
TransformShapeInPlace(outshape, rotmat);
}
return ShiftShape(outshape, detpar.x - detpar_roi.x,
detpar.y - detpar_roi.y);
}
