ILLUMINATION-ROBUST FACE RECOGNITION SYSTEM BASED ON DIFFERENTIAL COMPONENTS

摘要

PURPOSE: A face recognition system robust to changes in lighting based on differential components is provided to recognize the face based on D2D-PCA considering differential components, thereby recognizing exactly the face regardless of a change of lighting. CONSTITUTION: A face recognition system divides a face image obtained from a camera into right and left images (120). The system obtains a left image characteristic matrix by using differential two-dimensional principal component analysis (D2D-PCA) considering differential components based on the left image (130). The system calculates a left image distance value showing a distance value of the left image characteristic matrix based on the left image characteristic matrix (140). The system obtains a right image characteristic matrix by using D2D-PCA considering differential components based on the right image (150). The system calculates a right image distance value showing a distance value of the right image characteristic matrix based on the right image characteristic matrix (160). The system recognizes the face based on an integrated value combining the right and left image distance values (180). [Reference numerals] (110) Obtain a face image; (120) Divide the face image into right and left images; (130) Obtain s a left image characteristic matrix by using a two-dimensional principal component analysis based on the left image considering differential components; (140) Calculate a left image distance value; (150) Obtain a right image characteristic matrix by using a two-dimensional principal component analysis based on the left image considering differential components; (160) Calculate a right image distance value; (170) Calculate an integration value; (180) Perform face recognition; (AA) Start; (BB) End