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- W2005471829 abstract "We derive a modified version of the cubic convolution scaler to enlarge or reduce the size of digital images with arbitrary ratio. To enhance the edge information of the scaled image and to obtain a high-quality scaled image, the proposed scaler is applied along the direction of an edge. Since interpolation along the direction of an edge has to process nonuniformly sampled data, the kernel of the cubic convolution scalar is modified to interpolate the data. The proposed scaling scheme can be used to resize pictures in various formats in a transcoding system that transforms a bit stream compressed at one bit rate into one compressed at another bit rate. In many applications, such as transcoders, the resolution conversion is very important for changing the image size while maintaining high quality of the scaled image. We show experimental results that demonstrate the effectiveness of the proposed interpolation method. The proposed scheme provides clearer edges, without artifacts, in the resized image than do conventional schemes. The algorithm exhibits significant improvement in the minimization of information loss when compared with the conventional interpolation algorithms." @default.
- W2005471829 created "2016-06-24" @default.
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- W2005471829 date "2007-10-01" @default.
- W2005471829 modified "2023-10-14" @default.
- W2005471829 title "Modified cubic convolution scaler for edge-directed nonuniform data" @default.
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- W2005471829 doi "https://doi.org/10.1117/1.2789639" @default.
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