Dear Morphemeticians, I am working with landmark data for butterfly wings. Many images are from digitized collections around the world that often use a gray background when photographing a specimen.
However, I have noticed that many landmark studies of butterfly wings use a light box for illuminating the wing from below to increase the contrast of landmarks. I wonder if having a white background (versus a gray background) makes a large difference in the ability to capture major landmarks. Does anyone know of any references that strongly recommend the use of a light box? Or that have collected landmarks from specimens without using a light box? Or that speak to the accuracy of collecting landmarks from digital images that were meant for preserving a collection of insects and not necessarily for collecting landmark data? Thank you for any relevant resources or suggestions. Sincerely, Catherine Catherine M. Hulshof, PhD Assistant Professor Department of Biology University of Puerto Rico Mayaguez http://catherinehulshof.wordpress.com/ -- MORPHMET may be accessed via its webpage at http://www.morphometrics.org To unsubscribe from this group and stop receiving emails from it, send an email to [email protected].
