1. Classification of Asphalt Pavement Cracks Using Laplacian Pyramid-Based Image Processing and a Hybrid Computational Approach
- Author
-
Hoang, Nhat-Duc
- Subjects
Article Subject ,General Computer Science ,Computer science ,General Mathematics ,Data classification ,0211 other engineering and technologies ,Computational intelligence ,Image processing ,02 engineering and technology ,lcsh:Computer applications to medicine. Medical informatics ,Regularization (mathematics) ,lcsh:RC321-571 ,Image (mathematics) ,Digital image ,021105 building & construction ,Least squares support vector machine ,0202 electrical engineering, electronic engineering, information engineering ,Projection (set theory) ,lcsh:Neurosciences. Biological psychiatry. Neuropsychiatry ,business.industry ,General Neuroscience ,Pattern recognition ,General Medicine ,lcsh:R858-859.7 ,020201 artificial intelligence & image processing ,Artificial intelligence ,business ,Research Article - Abstract
To improve the efficiency of the periodic surveys of the asphalt pavement condition, this study puts forward an intelligent method for automating the classification of pavement crack patterns. The new approach relies on image processing techniques and computational intelligence algorithms. The image processing techniques of Laplacian pyramid and projection integral are employed to extract numerical features from digital images. Least squares support vector machine (LSSVM) and Differential Flower Pollination (DFP) are the two computational intelligence algorithms that are employed to construct the crack classification model based on the extracted features. LSSVM is employed for data classification. In addition, the model construction phase of LSSVM requires a proper setting of the regularization and kernel function parameters. This study relies on DFP to fine-tune these two parameters of LSSVM. A dataset consisting of 500 image samples and five class labels of alligator crack, diagonal crack, longitudinal crack, no crack, and transverse crack has been collected to train and verify the established approach. The experimental results show that the Laplacian pyramid is really helpful to enhance the pavement images and reveal the crack patterns. Moreover, the hybridization of LSSVM and DFP, named as DFP-LSSVM, used with the Laplacian pyramid at the level 4 can help us to achieve the highest classification accuracy rate of 93.04%. Thus, the new hybrid approach of DFP-LSSVM is a promising tool to assist transportation agencies in the task of pavement condition surveying.
- Published
- 2018