English: Part of a series of images to compare and contrast the levels of spatial aliasing that can result when an image that contains some strong spatial frequencies is digitally rescaled. An image of an 1801 engraving of King's College Chapel, Cambridge was used as a test object, and resized to 50% using different filters and different programs.
The image on this page was resized to 50% with Image Magick 6.7.5 using the "Lanczos" option -- i.e. taking into account nearby pixels using a Lanczos filter.
Like the triangle filter, the Lanczos filter appears in this case to have completely suppressed the remaining Moiré banding that was present with the box filter. But this time the image is a little less soft than it was with the triangle filter.
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