PREPROCESSING METHOD FOR FACE RECOGNITION, FACE RECOGNITION METHOD AND APPARATUS USING THE SAME

摘要

A preprocessing method for face recognition, and a method and a device for recognizing a face with the same are provided to improve a security level and performance of the face recognition by recognizing the face stably even if lighting is largely changed. An input unit(310) receives an image including a user face, and an extractor(320) extracts a face area from the inputted image. A lighting preprocessor(350) minimizes lighting effect by calculating neighboring areas of each pixel of the face area, and adjusting a pixel value according to a pixel value of a lower brightness value than the pixel in the neighboring areas. A recognizer(380) recognizes the face from a data image output from the lighting preprocessor. A geometrical preprocessor(340) normalizes the face area by keeping a ratio between positions of face components before the extracted face area is inputted to the lighting preprocessor. A database(370) stores face image data of a plurality of users having an ID. A mode controller(360) outputs the data image of the lighting preprocessor to the recognizer in a face recognition mode and stores the data image to the database in a face registration mode.