Please use this identifier to cite or link to this item: https://doi.org/10.1385/ENDO:22:3:185
Title: Fractional scaling of image and video in DCT domain
Authors: Zhao, Y. 
Kankanhalli, M.S. 
Chua, T.-S. 
Issue Date: 2003
Source: Zhao, Y., Kankanhalli, M.S., Chua, T.-S. (2003). Fractional scaling of image and video in DCT domain. IEEE International Conference on Image Processing 1 : 185-188. ScholarBank@NUS Repository. https://doi.org/10.1385/ENDO:22:3:185
Abstract: We present an algorithm for scaling image and video with fractional factors of 1.25 and 1.50 directly in compressed (DCT) domain without explicit decompression and recompression. It differs from those compressed-domain sampling methods that work only with integer factors, and provides more flexibility in changing image sizes. We employ a simple, consistent and extensible way to implement the algorithm. The resulting scheme ensures that the compressed domain algorithms always use fewer arithmetic operations than their conventional spatial domain counterparts. Experimental results in terms of visual quality and objective evaluation are provided.
Source Title: IEEE International Conference on Image Processing
URI: http://scholarbank.nus.edu.sg/handle/10635/40494
DOI: 10.1385/ENDO:22:3:185
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