Image processing apparatus and method for controlling the same

The invention realizes, with a circuit size having a small number of multipliers, one-dimensional cubic interpolation, which is a primitive calculation of two-dimensional bicubic interpolation that is often used as high image quality interpolation processing of images. An image processing apparatus...

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Bibliographische Detailangaben
1. Verfasser: Nakayama, Tadayoshi
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:The invention realizes, with a circuit size having a small number of multipliers, one-dimensional cubic interpolation, which is a primitive calculation of two-dimensional bicubic interpolation that is often used as high image quality interpolation processing of images. An image processing apparatus includes a first linear interpolation calculator that generates an interpolated pixel value at an interpolation position through linear interpolation, based on pixel values of a pair of pixels among a plurality of pixels, a plurality of second linear interpolation calculators that generate a plurality of correction values by respectively performing linear interpolation based on a pair of difference values among a plurality of difference values between pixel values of the plurality of pixels, and a calculator that generates a pixel value at the interpolation position based on the interpolated pixel value and the plurality of correction values.