Re: Which scanners REALLY provide 36 bit output? HP?

From: Stephen Williams (
Date: Sat Dec 09 2000 - 22:30:33 PST

  • Next message: Jason Aten: "microtek v6: light turns off on during scanning!" said:
    > Not at all. The engineering of the eye has the same constraints as any
    > engineering humans do. The eye uses three sensor channels.

    Not exactly. The eye actually has RGB *and luminance* sensors. That is,
    three narrow spectrums and one broad spectrum. The R G and B sensors overlap
    in their sensitivity range, but in low light, peripheral vision or during
    hypoxia the color sensors are not available at all.

    There are other complexities, but you probably know that.

    At any rate, my point is that there is more to archiving an image of a
    precious document then the depth of RGB intensities.

    Steve Williams                "The woods are lovely, dark and deep.              But I have promises to keep,            and lines to code before I sleep,       And lines to code before I sleep."

    -- Source code, list archive, and docs: To unsubscribe: echo unsubscribe sane-devel | mail

    This archive was generated by hypermail 2b29 : Sat Dec 09 2000 - 22:28:56 PST