Handwriting geometry recognition and calibration system by using neural network and mathematical feature

A handwriting geometry recognition and calibration system by using a neural network and mathematical feature, comprising:

• a mainframe including a processor and a memory connected to the mainframe;
• a handwriting geometry recognition system installed in the mainframe for recognizing a handwriting geometric figure inputted from users, the processor serving for performing operations of the handwriting geometry recognition system;
• the memory serving to store data and programs of the handwriting geometry recognition system;
• the handwriting geometry recognition system including:
• a pre-processor for pre-processing coordinate points of geometric figures from a user's handwriting so as to get a plurality of sample points which expresses the geometric figures to be recognized;
• a neural network connected to the pre-processor for receiving the sample points of the geometric figure and recognizing the geometric figure so as to acquire a coarse class of the geometric figure;
• and
• an mathematical logic unit connected to the neural network for receiving recognition results from the neural network, including coarse classifications which are used in a secondary classification by using conventional mathematical recognition logics so as to determine an exact geometry shape of the geometric figure;
• then the geometric figure being calibrated so as to get a geometry with a regular shape:
• wherein the arithmetic logic unit comprises:
• a turning-point finding unit for finding turning points to the sample points of the geometric figure by mathematical logic operation:
• the turning point being a turning location of the geometric figure;
• and
• a figure classification and calibration unit connected to the turning-point finding unit for performing a secondary classification to the geometric figure based on the coarse classification from the neural network and turning points finding by the turning- point finding unit so as to determine the exact class of the geometric figure and calibrate the shape of the geometric figure.