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A Local Image Interpolation Method Based On Gradient Analysis

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3 Author(s)
Tian Yan ; Dept. of Electron. & Information Eng., Huazhong Univ. of Sci. & Technol., Wuhan ; Liu Bin ; Li Tao

Image interpolation has been widely used and studied in the fields of image processing. Considering the different complexities along the different directions, a novel image interpolation method based on gradient analysis is presented in this article. First, for each point that need to be interpolated, the gradient values along the horizontal and vertical directions are estimated respectively. Second, different interpolation methods are carried out along these two directions according to the gradient values, that is a higher order interpolation method is applied if the gradient value is greater than certain threshold; otherwise, a lower order interpolation method is used. This method gives an attention to the precision and complexity of interpolation procedure. Experimental results show that the proposed method is feasible and promising

Published in:

Neural Networks and Brain, 2005. ICNN&B '05. International Conference on  (Volume:2 )

Date of Conference:

13-15 Oct. 2005

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