15 research outputs found
Does the spatial relationship of primary glioblastoma to the subventricular zone impact on neural stem cell marker expression and survival?
A Novel Digital-Camera Characterization Method for Pigment Identification in Cultural Heritage
Color represents a primary feature in the field of Art and Cultural
Heritage, which can also be of help in defining the conservation state of an
artwork. The color identification by means of a digital camera represents a nondestructive
methodology which makes use of a non-expensive and portable
device and enables a spatial analysis which is not allowed to a colorimeter. The
present study compares an original method for camera characterization with two
approaches reported in the literature. The comparison is based on parameters
such as the Pearson correlation coefficient and the DE00 colorimetric difference,
computed according to the CIEDE2000 formula. The data sets used for both the
\u201ctraining\u201d and the \u201cvalidation\u201d processes are (a) the 24 tiles of the Color
Checker Passport Photo X-Rite color scale and (b) 30 samples of oil painting
laid down on a canvas prepared according to the indications of Giorgio Vasari in
his renowned \u201cLe vite\u201d. The data so far available clearly show that our original
method leads to results which are similar or better than those furnished by the
literature methods