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2019 JRNL PP Bilel Sdiri - 1.pdf
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.