Grayscale Transforms - dspguide.com
dspguide.com › ch23 › 6The grayscale transform resulting from this strategy is shown in (c), labeled manual. It is found by taking the running sum (i.e., the discrete integral) of the curve in (b), and then normalizing so that it has a value of 255 at the
Convert PDF to Grayscale online - Sejda
www.sejda.com › grayscale-pdfA common reason for converting a PDF document to grayscale is to consume no coloured ink when printing it. If your PDF is grayscale, only black ink is used when you print it. Offset printing. One of the tool features is that it can convert text to grayscale or simply black. This is handy when preparing a PDF document for offset printing.