Method of extracting car number plates by image processing
Takeshi Agui, Hyung Jin Choi, Masayuki Nakajima · Systems and Computers in Japan · 1988
Abstract This paper proposes a method of extracting regions of car number plates using a parameter‐restricted Hough transformation (PRH). The PRH algorithm, in which the range of the parameter plane is restricted, reduces the computation time and the storage capacity more effectively than the usual Hough transformation. In this method, some features of car number plates are used.