In this thesis it is used the idea of matching the shadow elements(vertexes, edges) with the elements of shadow making, based on the shadow elements are the perspective projection of the boundary elements.
The matching idea can do as a global consistency checker and as a geometrical tester of junction labelling.
It is shown that the basic criterion for finding light source direction can be expressed in junction dictionary, and also included that the algorithm of expansion for matching procedure gives more strict label condition and its results give some 3-dimensional important informations.
