Coherence enhancement diffusion using multi-scale DFB

Mohammad A U Khan*, Tariq M. Khan, Shoab Ahmed Khan

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

3 Citations (Scopus)


Diffusion filtering techniques are mostly used to enhance the ridge structure of a noisy fingerprint image. In these filtering techniques the measurement of local orientation is needed. The diffusion tensor used in these techniques reflects the local image structure, as in a structure tensor same set of eigenvectors are used. To control the diffusion along the direction of high coherence special Eigenvalues are chosen. It works well in enhancing the ridges but, it takes orientation angles implicitly by using local image structure (derivatives). As we know that the derivatives have undesirable property of enhancing noise which makes the process of finding the correct orientation more difficult. This gives a further motivation for the improved orientation field calculated by some more reliable mean, which can overcome such difficulties. Therefore, in this work a Multi-Scale DDFB is used which adaptively change the local neighborhood size with the image local contrast and feature width. Experimental results show that the proposed algorithm is noise robust and is more suitable for feature localization as compare to other coherence enhancement diffusion algorithms.

Original languageEnglish
Title of host publicationICET 2011
Subtitle of host publication7th International Conference on Emerging Technologies
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages6
ISBN (Electronic)9781457707681 , 9781457707674
ISBN (Print)9781457707698
Publication statusPublished - 2011
Externally publishedYes
Event2011 7th International Conference on Emerging Technologies, ICET 2011 - Islamabad, Pakistan
Duration: 5 Sept 20116 Sept 2011


Other2011 7th International Conference on Emerging Technologies, ICET 2011


  • Directional Filter Bank (DFB)
  • Decimation free Directional Filter Bank (DDFB)
  • Scale Space
  • Fingerprint image enhancement


Dive into the research topics of 'Coherence enhancement diffusion using multi-scale DFB'. Together they form a unique fingerprint.

Cite this