I'm not sure about Photoshop, but you can do this with the more recent versions of NIH Image. The people who put together the Image Processing Handbook have produced a CD-ROM which turns Photoshop into an image processing program - we have ordered it but have not got it yet - I would be surprised if it does not include Fourier filters. We certainly have used Fourier filters in Image a lot to reduce digital camera noise with good success. Hope that helps, IAN On Fri, 7 Mar 1997 14:08:47 -0600, 314 wrote: >Does anyone know of a location on the Web where I might obtain a Fourier filter plug >in for Photoshop? I am trying to remove the scan lines from a confocal image that >was acquired under "less than optimum" conditions from a specimen that is difficult >to obtain. Thanks in advance for your assistance. > >Dave Beebe >[log in to unmask] Professor Ian Gibbins Flinders Microscopy & Department of Anatomy and Histology Image Analysis Facility Flinders University of South Australia GPO Box 2100 Adelaide 5001 Centre for Neuroscience AUSTRALIA Phone: +61-8-2045271 FAX: +61-8-2770085 e-mail: [log in to unmask]