Discrete cosine transform based high-resolution image reconstruction considering the inaccurate subpixel motion information

Min Kyu Park; Eun Sil Lee; Jin Yeol Park; Moon Gi Kang; Jaihie Kim

doi:10.1117/1.1431552

1 February 2002 Discrete cosine transform based high-resolution image reconstruction considering the inaccurate subpixel motion information

Min Kyu Park, Eun Sil Lee, Jin Yeol Park, Moon Gi Kang, Jaihie Kim

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Optical Engineering, Vol. 41, Issue 2, (February 2002). https://doi.org/10.1117/1.1431552

The demand for high-resolution images is gradually increasing, whereas many imaging systems have been designed to enable a certain level of aliasing during image acquisition. in this sense, digital image processing approaches have recently been investigated to reconstruct a high-resolution image from aliased low-resolution images. However, since the subpixel motion information is assumed to be accurate in most conventional approaches, the satisfactory high-resolution image cannot be obtained when the subpixel motion information is inaccurate. Hence, we propose a new algorithm to reduce the distortion in the reconstructed high-resolution image due to the inaccuracy of subpixel motion information. For this purpose, we analyze the effect of inaccurate subpixel motion information on a high-resolution image reconstruction, and model it as zero-mean additive Gaussian errors added respectively to each low-resolution image. To reduce the distortion, we apply the modified multichannel image deconvolution approach to the problem. The validity of the proposed algorithm is demonstrated both theoretically and experimentally.

©(2002) Society of Photo-Optical Instrumentation Engineers (SPIE)

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Min Kyu Park, Eun Sil Lee, Jin Yeol Park, Moon Gi Kang, and Jaihie Kim "Discrete cosine transform based high-resolution image reconstruction considering the inaccurate subpixel motion information," Optical Engineering 41(2), (1 February 2002). https://doi.org/10.1117/1.1431552

Published: 1 February 2002

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