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Using dispersion measures for determining block-size in motion estimation

Mera, Carlos Andres and Trujillo, María Patricia (2012) Using dispersion measures for determining block-size in motion estimation. Dyna; Vol. 79, núm. 171 (2012); 97-104 DYNA; Vol. 79, núm. 171 (2012); 97-104 2346-2183 0012-7353 .

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URL oficial: http://revistas.unal.edu.co/index.php/dyna/article...

Resumen

Video compression techniques remove temporal redundancy among frames and enable high compression efficiency in coding systems. Reduction of temporal redundancy is achieved by motion compensation. In turn, motion compensation requires motion estimation. Block matching is perhaps the most reliable and robust technique for motion estimation in video coding. However, block matching is computational expensive. Different approaches have been proposed in order to improve block matching motion estimation accuracy and efficiency. In this paper a block-matching strategy for motion estimation is introduced. In the proposed approach the size of matching block is adapted according to the variability of the matching areas. That is, the block-size is constrained by variations of the image intensity. The variability is assessed using two variability measures: the variance and the mean absolute deviation. Results of computer experiments aimed at validating the performance of the proposed approach are also reported.

Tipo de documento:Artículo - Article
Información adicional:Derechos de autor reservados
Palabras clave:Motion estimation, block matching, variance, mean absolute deviations, variable block-size
Unidad administrativa:Revistas electrónicas UN > Dyna
Código ID:25219
Enviado por : Dirección Nacional de Bibliotecas STECNICO
Enviado el día :27 Junio 2014 16:23
Ultima modificación:27 Noviembre 2017 22:19
Ultima modificación:27 Noviembre 2017 22:19
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