METHOD FOR EXTRACTING CHARACTERS FROM VEHICLE LICENSE PLATE, AND LICENSE PLATE CHARACTER EXTRACTION DEVICE FOR PERFORMING METHOD

There is provided a method of extracting characters from a license plate of a vehicle performed by a license plate character extraction device. The method comprises: converting a input image obtained by capturing the license plate of the vehicle into a grayscale image; generating a converted image based on a result of comparing a value of at least one pixel included in the grayscale image with a first average of values of pixels adjacent to the at least one pixel; generating a refined image based on a result of comparing the converted image with a binarized image obtained by binarizing the converted image; and extracting characters included in the refined image.