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"Slow Motion and Zoom in HD digital video using Fractals"
Slow motion replay and spatial zooming are special effects used in digital video rendering. At present, most techniques to perform spatial digital zoom and slow motion are based on interpolation for both enlarging the size of the original pictures and generating additional intermediate frames. Mainly, interpolation is done either by linear or cubic spline functions or by motion estimation / compensation which both can be applied pixel by pixel, or by partitioning frames into blocks. Purpose of this paper is to present s.alternative technique combining fractals theory and wavelet decomposition to achieve spatial zoom and slow motion replay of HD digital color video sequences. Fast scene change detection, active scene detection, wavelet subband analysis and color fractal coding based on Earth Mover's Distance (EMD) measure are used to reduce computational load and to improve visual quality. Experiments show that the proposed scheme achieves better results in terms of overall visual quality compared to the state-of-the art techniques.
http://www.hindawi.com/journals/ijdmb/aip.496934.pdf
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