Fig. 7From: Optimizing compositional images of daguerreotype photographs using post processing methodsX-ray line profile across high contrast boundaries. Au + Hg X-ray counts as a function of distance along a one dimensional trace, where: The solid black line represents the raw/noisy data and the dashed blue line represents the Haar-Fisz transformed data. Double black arrows show that high contrast image features are identical in size regardless of whether the noisy-raw data, or Haar-Fisz transformed data, are used for measurement. Inset: Red arrow marks the location of the line profile on the Two Boys daguerreotypeBack to article page