The most common way to correct moire is to take advantage of your scanning software’s “de-screening” feature. Friday, May 4, 2001 Manage moire The most common way to correct moire is to take advantage of your scanning software’s “de-screening” feature.
Moiré is often described as a noticeable pattern, such as herringbone, crosshatch, checkerboard, spots or a dotted pattern, in a scanned image. One common way to reduce moiré is to convert the scanned image into a vector image (rather than a bitmap) if your scanning software supports that feature. However, the most common way to correct moiré is to take advantage of the scanning software’s “de-screening” feature. Some scanners have a built-in de-screening feature that will reduce moiré automatically. In either case, de-screening will increase scan time, and will generally increase the memory requirements for image processing. Also remember that de-screening should only be used when scanning halftone or printed material–not when scanning photos or plain text.
Formerly part of Computer Currents, Stephen J. Bigelow’s Computer Advisor column has been resurrected on computeruser.com as a daily tech tip column. Find Stephen at www.dlspubs.com.