| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a zoom image generating apparatus which uses a linear interpolation method and also includes measures to cope with moire reduction and contour blurring. <P>SOLUTION: The zoom image generating apparatus is configured to generate a zoom image, by calculating coordinate values on a source image by zooming coordinate values of respective pixels constituting an image after zoom, to coordinate values corresponding to coordinate values of pixels constituting a source image before zoom, and then by calculating pixel values of the zoom image through linear interpolation using pixel values of the surrounding source image surrounding the coordinate values. The zoom image generating apparatus includes: a coordinate transforming section for transforming coordinate values of pixels to be interpolated on the source image into coordinate values within a predetermined region inside a periphery including pixels closest to the pixels of the source image of the periphery surrounding the coordinate values; an interpolation operating section for calculating pixel values of the pixels after zoom through linear interpolation based on the transformed coordinate values. Furthermore, the predetermined region is adjusted in accordance with the size of a zoom rate to become more effective for measures to cope with moire reduction and contour blurring. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
