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Article:Implementation of an Improved Watershed Algorithm in a Virtex 5 Platform
| International Journal of Computer Applications |
| Foundation of Computer Science (FCS), NY, USA |
| Volume 21 - Number 1 |
| Year of Publication: 2011 |
| Authors: Nadia Smaoui Zghal, Khaled Taouil, Dorra Sellami Masmoudi |
10.5120/2472-3326
|
Nadia Smaoui Zghal, Khaled Taouil, Dorra Sellami Masmoudi . Article:Implementation of an Improved Watershed Algorithm in a Virtex 5 Platform. International Journal of Computer Applications. 21, 1 ( May 2011), 40-45. DOI=10.5120/2472-3326
Abstract
Watershed transform, as was described by Vincent and Soille, is a segmentation algorithm based on a flooding process of the gradient image, which is observed as a topographic surface. Watershed transform aims at finding the peaks in this surface and identifying them as image contours. This algorithm is used in many applications for its flexibility. However, its main limitation is the over segmentation. In this paper, we will try to overcome this limitation. The enhancement phase is based on filtering the original image by an anisotropic diffusion filter and then quantizing the gradient image. For evaluation, the improved algorithm is applied on an empirical basis for image segmentation research in order to be compared with other segmentation algorithms. Simulation results prove the effectiveness of our algorithm. Watershed algorithm is used in medical field in order to extract areas of interest in an image representing a section bone. Finally, the implementation phase in a Virtex 5 is based on the co design methodology. The synthesis results show that the performance of the developed design is 130 MHz and the hardware occupation is about 78% for an image of size of 256*256.
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