Low-complexity 3D-DWT video encoder applicable to IPTV |
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Authors: | O López P Piñol |
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Affiliation: | a Miguel Hernández University, Avda. Universidad s/n, 03202 Elche (Alicante), Spain b Universidad Politécnica de Valencia, Camino de Vera s/n, 46222 Valencia, Spain |
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Abstract: | 3D-DWT encoders are good candidates for applications like professional video editing, IPTV video surveillance, live event IPTV broadcast, multispectral satellite imaging, HQ video delivery, etc., where a frame must be reconstructed as fast as possible. However, the main drawback of the algorithms that compute the 3D-DWT is the huge memory requirement in practical implementations. In this paper, and in order to considerably reduce the memory requirements of this kind of video encoders, we present a new 3D-DWT video encoder based on (a) the use of a novel frame-based 3D-DWT transform that avoids video sequence partitioning in Groups Of Pictures (GOP) and (b) a very fast run-length encoder. Furthermore, an exhaustive evaluation of the proposed encoder (3D-RLW) has been performed, analyzing the sensibility of the filters employed in the 3D-DWT transform and comparing the evaluation results with other video encoders in terms of R/D, coding/decoding delay and memory consumption. |
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Keywords: | IPTV Wavelet-based video coding 3D-DWT Performance evaluation |
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