5. The method of claim 4 , wherein the projection operation includes an operation of multiplying each weighted value to elements in each of the multidimensional feature vectors ci+j and an operation of averaging the elements element-wisely across the multidimensional feature vectors ci+j.
5. The method of claim 4 , wherein the projection operation includes an operation of multiplying each weighted value to elements in each of the multidimensional feature vectors ci+j and an operation of averaging the elements element-wisely across the multidimensional feature vectors ci+j. 7. The method of claim 5 , wherein the weighted value is set to be higher as a distance value between a location of a certain neighboring character image selected from the neighboring character images and that of the specific character image becomes smaller.