Adaptive Parameter Restricted Hough Transformation -Application To Extraction Of Car Number Plates-

Hyungjin Choi; Takeshi Agui; Masayuki Nakajima

doi:10.1117/12.969013

25 October 1988 Adaptive Parameter Restricted Hough Transformation -Application To Extraction Of Car Number Plates-

Hyungjin Choi, Takeshi Agui, Masayuki Nakajima

Proceedings Volume 1001, Visual Communications and Image Processing '88: Third in a Series; (1988) https://doi.org/10.1117/12.969013
Event: Visual Communications and Image Processing III, 1988, Cambridge, MA, United States

Abstract

Two methods of extracting the region of a car number plate using parameter restricted Hough transformation[PRH] and that of hierarchical parameter restricted Hough transformation[HPRH] were proposed(1). The computational time and storage requirement are reduced by these methods. In the present report, an adaptive parameter restricted Hough transformation[APRH] is proposed. The APRH algorithm, in which the range of the parameter plane is adaptively restricted, gives higher performance than the previous two methods. As an example of application of this method, extraction of car number plate and its results are described.

Citation Download Citation

Hyungjin Choi, Takeshi Agui, and Masayuki Nakajima "Adaptive Parameter Restricted Hough Transformation -Application To Extraction Of Car Number Plates-", Proc. SPIE 1001, Visual Communications and Image Processing '88: Third in a Series, (25 October 1988); https://doi.org/10.1117/12.969013

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