# WAVELET BASED EXTRACTION OF BLOOD VESSELS

### Hammad Omer, Ali Hojjat

#### Abstract

An algorithm for the segmentation of blood vessels based on the correlation of different wavelet scales is presented. First the wavelet coefficients are computed for a defined number of scales and then the correlation between the corresponding coefficients of two consecutive scales is computed. The normalized product is used as a reference threshold for retaining original wavelet coefficients. If the normalized product is greater than the corresponding original wavelet coefficient, the original coefficient is retained for image reconstruction by inverse wavelet transform, otherwise the coefficient is changed with zero value. Low frequency wavelet coefficients matrix is not used in image reconstruction process as we want only the edge information. The proposed algorithm is quite general and can be used for the extraction of any type of blood vessels and provides very promising results.

#### References

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#### Paper Citation

#### in Harvard Style

Omer H. and Hojjat A. (2009). **WAVELET BASED EXTRACTION OF BLOOD VESSELS ** . In *Proceedings of the International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2009)* ISBN 978-989-8111-65-4, pages 529-534. DOI: 10.5220/0001558005290534

#### in Bibtex Style

@conference{biosignals09,

author={Hammad Omer and Ali Hojjat},

title={WAVELET BASED EXTRACTION OF BLOOD VESSELS },

booktitle={Proceedings of the International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2009)},

year={2009},

pages={529-534},

publisher={SciTePress},

organization={INSTICC},

doi={10.5220/0001558005290534},

isbn={978-989-8111-65-4},

}

#### in EndNote Style

TY - CONF

JO - Proceedings of the International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2009)

TI - WAVELET BASED EXTRACTION OF BLOOD VESSELS

SN - 978-989-8111-65-4

AU - Omer H.

AU - Hojjat A.

PY - 2009

SP - 529

EP - 534

DO - 10.5220/0001558005290534