Design of a Real-time Algorithm Using Block-DCT for the Recognition of Speed Limit Signs 


Vol. 36,  No. 12, pp. 1574-1585, Dec.  2011


PDF
  Abstract

This paper proposes a real-time algorithm for speed limit sign recognition for advanced safety vehicle system. The proposed algorithm uses Block-DCT in extracting features from a given ROI(Region Of Interest) instead of using entire pixel values as in previous works. The proposed algorithm chooses parts of the DCT coefficients according to the proposed discriminant factor, uses correlation coefficients and variances among ROIs from training samples to reduce amount of arithmetic operations without performance degradation in classification process. The algorithm recognizes the speed limit signs using the information obtained during training process by calculating LDA and Mahalanobis Distance. To increase the hit rate of recognition, it uses accumulated classification results computed for a sequence of frames. Experimental results show that the hit rate of recognition for sequential frames reaches up to 100 %. When compared with previous works, numbers of multiply and add operations are reduced by 69.3 % and 67.9 %, respectively. Start after striking space key 2 times.

  Statistics
Cumulative Counts from November, 2022
Multiple requests among the same browser session are counted as one view. If you mouse over a chart, the values of data points will be shown.


  Cite this article

[IEEE Style]

S. Han, H. Cho, K. Kim, S. Hwang, "Design of a Real-time Algorithm Using Block-DCT for the Recognition of Speed Limit Signs," The Journal of Korean Institute of Communications and Information Sciences, vol. 36, no. 12, pp. 1574-1585, 2011. DOI: .

[ACM Style]

Seung-Wha Han, Han-Min Cho, Kwang-Soo Kim, and Sun-Young Hwang. 2011. Design of a Real-time Algorithm Using Block-DCT for the Recognition of Speed Limit Signs. The Journal of Korean Institute of Communications and Information Sciences, 36, 12, (2011), 1574-1585. DOI: .

[KICS Style]

Seung-Wha Han, Han-Min Cho, Kwang-Soo Kim, Sun-Young Hwang, "Design of a Real-time Algorithm Using Block-DCT for the Recognition of Speed Limit Signs," The Journal of Korean Institute of Communications and Information Sciences, vol. 36, no. 12, pp. 1574-1585, 12. 2011.

Search
(IN TITLE, AUTHOR, ABSTRACT,KEYWORDS)

Advanced Search ▼

POPULAR KEYWORDS
(TOP 10 KEYWORDS)

Recent Publications
(LAST 3 YEARS)






pISSN : 1226 - 4717
eISSN : 2287 - 3880