Using the equivariant Ljusternik Schnirelmann theory and the best estimates of the upper bound and lower bound of the critical values and the infimum estimate about the functional values on the collision solutions,we obtain results in the large concerning 2 geometrically distinct periodic solutions with a fixed energy for 3 body type problems.

This thesis studies 3D face recognition method based on geometric feature vector: first of all, read the 3D face point-cloud data to extract the facial contour, and then locate some key feature points and calculate the geometric feature vectors.

Influence of calorific effect of chemical reaction on geometric characteristics of laser remelting zone;

But the geometric characteristics for the intersections of quadtrees with the boundary of the region often tend to be complicated.

This thesis proposed a novel technique to measure the geometric characteristics of living human skulls based on CT scan images.

Facial Expression Recognition Basedon Geometrical Features;

The geometrical feature, Theological attribute, thermodynamic attribute of melt and die heating in the pipe extrusion were studied based on Finite Element Method in this article.

The algorithm is based on the geometrical features of an aircraft and the mathematical morphology.

The geometrical characteristics of sunken column in North China Coalfield is summarized from the aspects of its planar shape, sectional shape,development height and axle center change, etc.

In order to solve the problem,a new algorithm for calculating RCS is presented based on the geometrical characteristic of target aircraft configurations and the method of moment(MOM).

Rational Bézier representation for quadratic curve and its transition were put forward, which was the basis of computation of geometrical characteristics of NURBS method for quadratic curve.