Block · one region of the page, as the scanner read it. It may hold a whole story, part of one, several, or an advertisement; stitching blocks into articles is the next step. Text is supplied OCR.
Page 18 · column 4 of 6 · from the scan, no model involved
Now you can have precise color matching in just a few minutes. Modern technology in the form of Moore's Computer Color
99.5%