Design of an Efficient Real-Time Algorithm Using Reduced Feature Dimension for Recognition of Speed Limit Signs
We propose a real-time algorithm for recognition of speed limit signs from a moving vehicle. Linear Discriminant Analysis (LDA) required for classification is performed by using Discrete Cosine Transform (DCT) coefficients. To reduce feature dimension in LDA, DCT coefficients are selected by a devis...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2013-01-01
|
| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2013/135614 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832564263297744896 |
|---|---|
| author | Hanmin Cho Seungwha Han Sun-Young Hwang |
| author_facet | Hanmin Cho Seungwha Han Sun-Young Hwang |
| author_sort | Hanmin Cho |
| collection | DOAJ |
| description | We propose a real-time algorithm for recognition of speed limit signs from a moving vehicle. Linear Discriminant Analysis (LDA) required for classification is performed by using Discrete Cosine Transform (DCT) coefficients. To reduce feature dimension in LDA, DCT coefficients are selected by a devised discriminant function derived from information obtained by training. Binarization and thinning are performed on a Region of Interest (ROI) obtained by preprocessing a detected ROI prior to DCT for further reduction of computation time in DCT. This process is performed on a sequence of image frames to increase the hit rate of recognition. Experimental results show that arithmetic operations are reduced by about 60%, while hit rates reach about 100% compared to previous works. |
| format | Article |
| id | doaj-art-5f6ed7b3ce60438f8e9bab96e18ec9fa |
| institution | Kabale University |
| issn | 1537-744X |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-5f6ed7b3ce60438f8e9bab96e18ec9fa2025-02-03T01:11:26ZengWileyThe Scientific World Journal1537-744X2013-01-01201310.1155/2013/135614135614Design of an Efficient Real-Time Algorithm Using Reduced Feature Dimension for Recognition of Speed Limit SignsHanmin Cho0Seungwha Han1Sun-Young Hwang2Department of Electronic Engineering, Sogang University, Seoul 121-742, Republic of KoreaSamsung Techwin R&D Center, Security Solution Division, 701 Sampyeong-dong, Bundang-gu, Seongnam-si, Gyeonggi 463-400, Republic of KoreaDepartment of Electronic Engineering, Sogang University, Seoul 121-742, Republic of KoreaWe propose a real-time algorithm for recognition of speed limit signs from a moving vehicle. Linear Discriminant Analysis (LDA) required for classification is performed by using Discrete Cosine Transform (DCT) coefficients. To reduce feature dimension in LDA, DCT coefficients are selected by a devised discriminant function derived from information obtained by training. Binarization and thinning are performed on a Region of Interest (ROI) obtained by preprocessing a detected ROI prior to DCT for further reduction of computation time in DCT. This process is performed on a sequence of image frames to increase the hit rate of recognition. Experimental results show that arithmetic operations are reduced by about 60%, while hit rates reach about 100% compared to previous works.http://dx.doi.org/10.1155/2013/135614 |
| spellingShingle | Hanmin Cho Seungwha Han Sun-Young Hwang Design of an Efficient Real-Time Algorithm Using Reduced Feature Dimension for Recognition of Speed Limit Signs The Scientific World Journal |
| title | Design of an Efficient Real-Time Algorithm Using Reduced Feature Dimension for Recognition of Speed Limit Signs |
| title_full | Design of an Efficient Real-Time Algorithm Using Reduced Feature Dimension for Recognition of Speed Limit Signs |
| title_fullStr | Design of an Efficient Real-Time Algorithm Using Reduced Feature Dimension for Recognition of Speed Limit Signs |
| title_full_unstemmed | Design of an Efficient Real-Time Algorithm Using Reduced Feature Dimension for Recognition of Speed Limit Signs |
| title_short | Design of an Efficient Real-Time Algorithm Using Reduced Feature Dimension for Recognition of Speed Limit Signs |
| title_sort | design of an efficient real time algorithm using reduced feature dimension for recognition of speed limit signs |
| url | http://dx.doi.org/10.1155/2013/135614 |
| work_keys_str_mv | AT hanmincho designofanefficientrealtimealgorithmusingreducedfeaturedimensionforrecognitionofspeedlimitsigns AT seungwhahan designofanefficientrealtimealgorithmusingreducedfeaturedimensionforrecognitionofspeedlimitsigns AT sunyounghwang designofanefficientrealtimealgorithmusingreducedfeaturedimensionforrecognitionofspeedlimitsigns |