New improved unsharp masking methods compatible with ultrasound B-mode imaging

Conference paper


Moubark, AM, Carpenter, TM, Cowell, DMJ, Harput, S and Freear, S (2017). New improved unsharp masking methods compatible with ultrasound B-mode imaging. 2017 IEEE International Ultrasonics Symposium (IUS). 06 - 09 Sep 2017 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ULTSYM.2017.8092244
AuthorsMoubark, AM, Carpenter, TM, Cowell, DMJ, Harput, S and Freear, S
TypeConference paper
Abstract

© 2017 IEEE. In medical ultrasound B-mode imaging, by increasing the image contrast, spatial and temporal resolution, it will help to improve the diagnostic and decision making process. Previously the unsharp masking (UM) techniques have been successfully implemented for digital image processing as edge enhancement techniques. However, the outcomes of the method are limited and influenced by the image formats conversion and lower dynamic range. Moreover the conventional UM technique sensitive to noise due to the presence of linear high pass filter which cannot discriminate signal from noise. Furthermore, the technique only enhances the image in darker compared to lighter regions. To overcome those issues, a new improved UM method compatible with ultrasound B-mode imaging was applied to compound plane wave imaging (CPWI). The received radio frequency (RF) signal was beamformed with delay and sum (DAS) and filtered delay and sum (FDMAS). Results show that the proposed techniques are not only able to improve the image contrast but also the spatial resolution. The UM technique manages to improve the B-mode image lateral resolution (LR) by 18.36% and 10.25% as well as reduced the peak side lobes (PSL) by 16.67 dB and 21.24 dB on DAS and FDMAS respectively when compounded with CPWI, N=13. For the same number of compounding and beamforming order, the image contrast ratio (CR) has been improved by 10.35 dB and 7.39 dB accordingly.

Year2017
JournalIEEE International Ultrasonics Symposium, IUS
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
ISSN1948-5719
Digital Object Identifier (DOI)https://doi.org/10.1109/ULTSYM.2017.8092244
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Open
Publication dates
Print31 Oct 2017
Publication process dates
Accepted06 Aug 2017
Deposited24 Mar 2020
ISBN9781538633830
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https://openresearch.lsbu.ac.uk/item/89598

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