Function calcuateLipsRegionInfo

jni/venus/region_operation.cpp:899–976

}

RoiInfo calcuateLipsRegionInfo(const std::vector<Point2f>& points, int radius/* = 0*/, const Scalar& color/*= Scalar(255, 255, 255, 255)*/)
{
	// Due to the speed factor, mouth haven't been taken skew into consideration.
	float left = points[63].x, right = points[69].x;
	float top = std::min(points[65].y, points[67].y), bottom = points[78].y;

	Rect2f rect;
	left -= radius; right += radius;
	top -= radius; bottom += radius;

	Point2f origion(left, top);
	Point2f pivot(points[74].x + radius, points[74].y + radius);
	Rect region(cvRound(left), cvRound(top), cvRound(right - left), cvRound(bottom - top));
	Size size = region.size();
	Mat mask(size, CV_8UC1, Scalar::all(0));  // Bitmap.Config.A8 transparent
#if 0
	const int index_lips[] =
	{
		63, 64, 65, 66, 67, 68, 69, 70, 71, 72,  // upper
		63, 73, 74, 75, 69, 76, 77, 78, 79, 80,  // lower
	};

	std::vector<Point> contour;
	contour.reserve(NELEM(index_lips));
	for(size_t j = 0; j < NELEM(index_lips); ++j)
	{
		const int& i = index_lips[j];
		float x = points[i].x - left;  // make it relative
		float y = points[i].y - top;
		contour.push_back(Point(cvRound(x), cvRound(y)));
	}
	
	const Point* polygons[2] = { contour.data(), contour.data() + contour.size()/2 };
	const int num_points[] = { static_cast<int>(contour.size()/2), static_cast<int>(contour.size()/2) };
	cv::fillPoly(mask, polygons, num_points, 2, color);  // white
#else
	std::vector<Point> contour;
	auto push = [&contour, &left, &top](const Point2f& point) { contour.push_back(Point(cvRound(point.x - left), cvRound(point.y - top))); };
	// upper lip
	for(int i = 63; i <= 72; ++i)
		push(points[i]);

	// lower lip
	push(points[63]);
	push(points[73]);
	push(catmullRomSpline(1.0f/3, points[63], points[73], points[74], points[75]));
	push(catmullRomSpline(2.0f/3, points[63], points[73], points[74], points[75]));
	push(points[74]);

	push(catmullRomSpline(1.0f/3, points[73], points[74], points[75], points[69]));
	push(catmullRomSpline(2.0f/3, points[73], points[74], points[75], points[69]));
	push(points[75]);

	push(points[69]);
	push(points[76]);

	for(int i = 76; i <= 79; ++i)
	{