Please use this identifier to cite or link to this item:
https://scholarbank.nus.edu.sg/handle/10635/17021
DC Field | Value | |
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dc.title | Multi-scale boundary representation using wavelet detection and arithmetic chain coding | |
dc.contributor.author | YAP WEE HAU | |
dc.date.accessioned | 2010-05-13T19:28:02Z | |
dc.date.available | 2010-05-13T19:28:02Z | |
dc.date.issued | 2005-07-28 | |
dc.identifier.citation | YAP WEE HAU (2005-07-28). Multi-scale boundary representation using wavelet detection and arithmetic chain coding. ScholarBank@NUS Repository. | |
dc.identifier.uri | http://scholarbank.nus.edu.sg/handle/10635/17021 | |
dc.description.abstract | This project involves the development of a multi-scale boundary representationusing wavelet detection and an improved chain-coding algorithm to codeboundary information.Classical gradient-based edge detectors (Roberts, Sobel, etc.) which use localpixel intensity changes to locate edges, are not able to distinguish edges ofdifferent significance. The proposed wavelet-based edge detection algorithmanalyses the interaction of the 1-D wavelet transform coefficients (acrosstransform scales) along image rows and columns to identify multi-scale edges ofdifferent significance. Next, the algorithm re-classifies the edge informationaccording to the 2-D correlation of the edge pixels. Edge pixels having strongerspatial correlation with neighbouring edge pixels would be promoted to a higherlevel of significance while those having weaker correlation with neighbouringedge pixels would be demoted. With this, the multi-scale edge detector isimplemented.The proposed Arithmetic-based Chain Coder encodes the boundary informationby applying arithmetic coding into chain-coding. The experimental results showpositive improvement in coding performance (by 29%) when compared toconventional chain coding or scanline arithmetic coding. | |
dc.language.iso | en | |
dc.subject | wavelet chain coding boundary representation detection | |
dc.type | Thesis | |
dc.contributor.department | ELECTRICAL & COMPUTER ENGINEERING | |
dc.contributor.supervisor | ASHRAF ALI BIN MOHAMED KASSIM | |
dc.description.degree | Master's | |
dc.description.degreeconferred | MASTER OF ENGINEERING | |
dc.identifier.isiut | NOT_IN_WOS | |
Appears in Collections: | Master's Theses (Open) |
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File | Description | Size | Format | Access Settings | Version | |
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01_TitlePage.pdf | 26.85 kB | Adobe PDF | OPEN | None | View/Download | |
02_Acknowledgements.pdf | 13.57 kB | Adobe PDF | OPEN | None | View/Download | |
03_TableOfContents.pdf | 26.22 kB | Adobe PDF | OPEN | None | View/Download | |
04_Abstract.pdf | 19.13 kB | Adobe PDF | OPEN | None | View/Download | |
05_Lists.pdf | 48.43 kB | Adobe PDF | OPEN | None | View/Download | |
06_Chapter1.pdf | 30.4 kB | Adobe PDF | OPEN | None | View/Download | |
07_Chapter2.pdf | 1.47 MB | Adobe PDF | OPEN | None | View/Download | |
08_Chapter3.pdf | 144.4 kB | Adobe PDF | OPEN | None | View/Download | |
09_Chapter4.pdf | 87.04 kB | Adobe PDF | OPEN | None | View/Download | |
10_Chapter5.pdf | 325.46 kB | Adobe PDF | OPEN | None | View/Download | |
11_Chapter6.pdf | 2.21 MB | Adobe PDF | OPEN | None | View/Download | |
12_Chapter7.pdf | 107.37 kB | Adobe PDF | OPEN | None | View/Download | |
13_Chapter8.pdf | 21.64 kB | Adobe PDF | OPEN | None | View/Download | |
14_References.pdf | 28.52 kB | Adobe PDF | OPEN | None | View/Download | |
15_Appendix.pdf | 21.47 kB | Adobe PDF | OPEN | None | View/Download |
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