Slow Motion and Zoom in HD Digital Videos Using Fractals
Slow motion replay and spatial zooming are special effects used in digital video rendering. At present, most techniques to perform digital spatial zoom and slow motion are based on interpolation for both enlarging the size of the original pictures and generating additional intermediate frames. Mainl...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Wiley
2009-01-01
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| Series: | International Journal of Digital Multimedia Broadcasting |
| Online Access: | http://dx.doi.org/10.1155/2009/496934 |
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| _version_ | 1832562990356889600 |
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| author | Maurizio Murroni Cristian Perra Daniele D. Giusto |
| author_facet | Maurizio Murroni Cristian Perra Daniele D. Giusto |
| author_sort | Maurizio Murroni |
| collection | DOAJ |
| description | Slow motion replay and spatial zooming are special effects used in digital video rendering. At present, most techniques to perform digital spatial 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 an 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. |
| format | Article |
| id | doaj-art-0021726619ab4af5b084edcf5147c464 |
| institution | Kabale University |
| issn | 1687-7578 1687-7586 |
| language | English |
| publishDate | 2009-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Digital Multimedia Broadcasting |
| spelling | doaj-art-0021726619ab4af5b084edcf5147c4642025-02-03T01:21:13ZengWileyInternational Journal of Digital Multimedia Broadcasting1687-75781687-75862009-01-01200910.1155/2009/496934496934Slow Motion and Zoom in HD Digital Videos Using FractalsMaurizio Murroni0Cristian Perra1Daniele D. Giusto2DIEE, University of Cagliari, Piazza D'Armi, 09123 Cagliari, ItalyDIEE, University of Cagliari, Piazza D'Armi, 09123 Cagliari, ItalyDIEE, University of Cagliari, Piazza D'Armi, 09123 Cagliari, ItalySlow motion replay and spatial zooming are special effects used in digital video rendering. At present, most techniques to perform digital spatial 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 an 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://dx.doi.org/10.1155/2009/496934 |
| spellingShingle | Maurizio Murroni Cristian Perra Daniele D. Giusto Slow Motion and Zoom in HD Digital Videos Using Fractals International Journal of Digital Multimedia Broadcasting |
| title | Slow Motion and Zoom in HD Digital Videos Using Fractals |
| title_full | Slow Motion and Zoom in HD Digital Videos Using Fractals |
| title_fullStr | Slow Motion and Zoom in HD Digital Videos Using Fractals |
| title_full_unstemmed | Slow Motion and Zoom in HD Digital Videos Using Fractals |
| title_short | Slow Motion and Zoom in HD Digital Videos Using Fractals |
| title_sort | slow motion and zoom in hd digital videos using fractals |
| url | http://dx.doi.org/10.1155/2009/496934 |
| work_keys_str_mv | AT mauriziomurroni slowmotionandzoominhddigitalvideosusingfractals AT cristianperra slowmotionandzoominhddigitalvideosusingfractals AT danieledgiusto slowmotionandzoominhddigitalvideosusingfractals |