System and process for image rescaling using adaptive interpolation kernal with sharpness and de-ringing control
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United States of America Patent
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Jul 12, 2016
Grant Date -
Dec 11, 2014
app pub date -
Aug 22, 2014
filing date -
Jun 4, 2010
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Abstract
A digital video rescaling system is provided. The system includes an image data input configured to receive input support pixels y1 to yn and a sharpness control module configured to generate a sharpness control parameter Kshp. The system further includes an interpolated pixel generator configured to use an adaptive interpolation kernel to generate an interpolated pixel ys based on the input support pixels, and adjust a sharpness of the interpolated pixel ys based at least partly upon the sharpness control parameter Kshp. The system also includes a de-ringing control unit to adjust the ringing effect of the interpolated pixel based on a local image feature Kfreq, and an output module configured to output the adjusted interpolated pixel for display.
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