Text in English ; Abstract: English and Turkish ; Includes bibliographical references (leaves 51-54) ; xii, 55 leaves ; This study was supported by The Scientific and Technological Research Council of Turkey (TÜBİTAK) Grant No: 108E201 ; Since the invention of high definition display technologies, video standards conversion problem has become an important task to store, transmit and display new video formats. One of the standards conversion issue, video frame rate up-conversion (FRUC) should be considered as an important problem for high definition displays because these displays reach high refresh ates up to 100 Hz and low video frame rates should be increased before displaying. The solutions generated by conventional FRUC techniques cause artifacts such as jerkie motion and judder effect on the screen. The objective of this thesis is to remove judder and occlusion artifacts and generate a smooth object motion for high definition displays. In order to solve the problem, this thesis describes a multi-stage motion vector (MV) post-processing technique for true motion estimation and proposes a new video frame rate up-conversion method with occlusion adaptive overlapped block motion compensation, which increases the temporal resolution without loss of spatial resolution and consistency. Conventional block matching algorithms yields us unreliable MVs which should be post-processed in the refinement stages to get a consistent MV field in spatial domain. Relations between neighboring MVs are utilized to detect occlusion regions. Overlapped Block Motion Comppensation (OBMC) is adapted to these problematic regions in order to reduce halo artifacts caused by occlusion. Compared to existing methods, the proposed algorithm achieves FRUC with reduced loss of spatiaal resolution and reduced amount of artifacts. ; Yüksek çözünürlüklü görüntüleme teknololojilerinin icadı ile yüksek çözünürlük videoyu saklama, iletme ve görüntüleme formatlarındaki değişiklikler video standartları çevirimi problemini önemli bir konuma ...


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    Titel :

    True motion estimation for video frame rate up-conversion ; Video çerçeve hız artımı için gerçek devinim vektör kestirimi



    Erscheinungsdatum :

    2009-01-01


    Medientyp :

    Hochschulschrift


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Klassifikation :

    DDC:    629







    Multi-frame Pel-recursive Motion Estimation for Video Image Interpolation

    Huang, J. / Mersereau, R. M. / IEEE; Signal Processing Society | British Library Conference Proceedings | 1994


    An Efficient Motion Re-estimation algorithm for Frame-skipping Video Transcoding

    Yang, S. / Kim, D. / Jeon, Y. et al. | British Library Conference Proceedings | 2005