Directional Filtering as a Multi-Purpose Tool in Image Processing
Document Type
Conference Proceeding
Publisher
IEEE
Faculty
Faculty of Computing, Health and Science
School
School of Computer and Information Science
RAS ID
2121
Abstract
Directional filtering is commonly known as a technique for selective linear enhancement. In addition to this traditional utility, we present in this paper some examples demonstrating that it can be used as a multi-purpose tool in image processing, by adjusting its parameters. These examples show that: (1) applying directional filtering in conjugate directions simultaneously can lead to the enhancement of specific conjugate linear features on an image, which is useful in interpretation of geophysical and Landsat images, satellite and aerial photographs that contain many conjugate linear features; (2) directional filtering can be used as illuminating sources to produce shaded relief images that show 3D effect; by combining the directional filtered result with its original image, this 3D effect becomes much more profound; (3) the directional filtered result can be weighted by different factors, which allows some subtle features on an image to be identified.
DOI
10.1109/ICII.2001.982768
Comments
Guo, W., Li, D., & Watson, A. C. (2001). Directional filtering as a multi-purpose tool in image processing. Proceedings of 2001 International Conferences on Info-Tech and Info-Net. ICII 2001. (pp. 332-336). Piscataway, New Jersey: IEEE. Available here