Browsing by Author "Su, Ming-Cheng"

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A Content-Adaptive Image Enlargement Scheme Based on Iterative Back-Projection
(2014-01-01)
Chang, Min-Kuan
;
Su, Ming-Cheng
;
Lin, Guo-Shiang
;
Chien, Feng-Tsun
;
電子工程學系及電子研究所
In this paper, we propose an adaptive image enlargement scheme based on iterative back-projection. Initial estimates of each enlarged image can be individually created from the spatial and temporal domains by using sub-pixel interpolation and sub-pixel motion estimation. Then, based on the initial estimates and image content, reconstructed images are derived by using a modified iterative back-projection technique and fused into an enlarged image. Finally, a low-pass filter as a post-processing is applied to reduce the blocking artifacts in the reconstructed high-resolution images. Our experiment results demonstrate that, in terms of PSNR and NQM, the proposed scheme is superior to existing methods.