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- W2050558575 abstract "One of the goals of superresultion has been to achieve interpolation in excess of some externally imposed physical constraint. Initially it was the optical diffraction limit while the Nyquist Limit of sampled data systems has also become a more recent issue. Regardless of the setting, the limitations are the same; there generally is not enough available degrees of freedom to perform aninterpolation without severe loss of information. While some success has been achieved in superresolution, magnification is generally limited to less than 2. In this paper we present a methodwhere context based basis functions are developed for digital zoom where the magnifications were assumed to be greater that 2. The number of degrees of freedom are still less than the number formally required, because the basis functions are developed for scenes similar to scenes presented for interpolation, they are more efficient than those developed without regard to context. The technique is presented together with several still images and video examples of digital zoom for a magnification of 5 and 10. Results are compared with conventional B-Cubic Splineinterpolation. Parallelization of the technique with graphic processors is discussed toward its real time implementation." @default.
- W2050558575 created "2016-06-24" @default.
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- W2050558575 date "2011-05-13" @default.
- W2050558575 modified "2023-09-23" @default.
- W2050558575 title "Digital zoom algorithm with context derived basis functions" @default.
- W2050558575 doi "https://doi.org/10.1117/12.881650" @default.
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