2019 JRNL PP Bilel Sdiri - 1.pdf
Terbatas  Irwan Sofiyan
» Gedung UPT Perpustakaan
Terbatas  Irwan Sofiyan
» Gedung UPT Perpustakaan
The success of minimally invasive interventions
and the remarkable technological and medical
progress havemade endoscopicimage enhancement a very
active researchfield.Due to the intrinsic endoscopicdomain
characteristicsand the surgicalexercise, stereo endoscopic
images may suffer from different degradations which affect
its quality. Therefore, in order to provide the surgeons
with a better visual feedback and improve the outcomes
of possible subsequent processing steps, namely, a 3-D
organ reconstruction/registration, it would be interesting to
improve the stereo endoscopic image quality. To this end,
we propose, in this paper, two joint enhancement methods
which operate in the wavelet transform domain. More
precisely, by resorting to a joint wavelet decomposition,
the wavelet subbands of the right and left views are simultaneously
processed to exploit the binocular vision properties.
While the first proposed technique combines only the
approximation subbands of both views, the secondmethod
combines all the wavelet subbands yielding an inter-view
processing fully adapted to the local features of the stereo
endoscopic images. Experimental results, carried out on
various stereo endoscopicdatasets, have demonstrated the
efficiency of the proposed enhancement methods in terms
of perceived visual image quality.