Low bit depth representation motion estimation algorithms: a comparative study |
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Authors: | Athanasios Vlachos Vassilis Fotopoulos Athanassios N Skodras |
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Affiliation: | (1) Digital Systems and Media Computing Laboratory, School of Science and Technology, Hellenic Open University, 13-15 Tsamadou st., 26222 Patras, Greece |
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Abstract: | A comparative study of low complexity motion estimation algorithms is presented. The algorithms included in the study are
the 1-bit transform, the 2-bit transform, the constrained 1-bit transform and the multiplication free 1-bit transform which
are using different motion estimation strategies compared to standard exhaustive search algorithm-mean absolute difference
or similar combinations. These techniques provide better performance in terms of computational load compared to traditional
algorithms. Although the accuracy of motion compensation is only slightly lower comparing to the other techniques, results
in terms of objective quality (peak signal-to-noise ratio) and entropy are comparable. This fact, nominates them as suitable
candidates for inclusion in embedded devices applications where lower complexity translates to lower power consumption and
consequently improved device autonomy. |
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Keywords: | |
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