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For super-resolution (4K × 2K) displays, super-resolution technologies, which can upsample videos to higher resolution and achieve better visual quality, become more and more important currently. In this paper, an iterative enhanced super-resolution (IESR) system which is based on two-pass edge-dominated interpolation, adaptive enhancement, and adaptive dithering techniques is proposed. The two-pass edge-dominated interpolation with a simple and regular kernel can sharpen visual quality while the adaptive enhancement can provide high-frequency perfection and the adaptive dithering conveys naturalization enhancement such that the proposed IESR system achieves better peak signal-to-noise ratio (PSNR) and exhibits better visual quality. Experimental results indicate that the proposed IESR system, which improves PSNR up to 28.748 dB and promotes structural similarity index measurement (SSIM) up to 0.917611 in averages, is better than the other existing methods. Simulations also exhibit that the proposed IESR system acquires lower computational complexity than the methods which achieve similar visual quality.

An iterative enhanced super-resolution system with edge-dominated interpolation and adaptive enhancements