The Data Big Bang and the Expanding Digital Universe: High-Dimensional, Complex and Massive Data Sets in an Inflationary Epoch
Figure 1
ESO-La Silla; courtesy of A. Grado, INAF-Osservatorio Astronomico di Capodimonte. (a) overlaid pre- and post-processed images; the red cross shows approximately the edge of the diffuse halo. (b) Flux-cut through the overlaid pre- and post-processed images (red and green, resp.); the vertical grey line (close to the center of the plot) corresponds to the red cross in the plot on the left; after the preprocessing the average level “outside” of the halo is lower than the average level “inside”, thus enabling a better automated separation of the diffuse halo from the background.
