Multi-Function Device Modeling: RE: MFD> Binary Versus MonoChrome Versus Color

RE: MFD> Binary Versus MonoChrome Versus Color

From: William A Wagner (
Date: Wed Dec 19 2007 - 14:30:11 EST

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    I apparently missed a discussion of the meaning of monochrome, but I
    consider the term to include gray-scale. After all, it refers to a single
    color (χρωμα) but does not refer to shade/density/intensity. I consider a
    monochrome a characteristic as distinguished from polychrome, or full color
    or spot color.


    However, the definitions, need some discussion. This is especially true of
    digitally represented color images.


    Further, I suggest that we specify that the definitions refer to the
    conventional digital representations of images; there are also hardcopy
    images, the characteristics definition of which is beyond the scope of the
    MFD semantics activity.


    Bill Wagner


    From: [] On Behalf Of Petrie, Glen
    Sent: Tuesday, December 18, 2007 2:49 PM
    Subject: MFD> Binary Versus MonoChrome Versus Color


    My background in physics, optics and image processing has always used the
    term monochrome to mean "an image is presented as different shades of gray
    from black to white"; with the more general definition to be "an image is
    presented as different shades of a single color from the color to white".
    After searching the web (do a Google search using the key words "define:
    monochrome") you will discover that you can find just about any definition
    you want; including:


              Monochrome Printer - A monochrome printer can only produce an
    image consisting of one color,

                usually black. A monochrome printer may also be able to produce

    of tone of that color, such as a grey-scale.


    So this mean monochrome is both B/W and grey (gray)!!!!!!!!!!!!!!


    I believe you will find that the term monochrome migrated to it current
    association as a binary B/W representation from how people have talked about
    photos. Photos have always been denoted as either being "Black/White" or
    "Color". This is done to distinguish two big classes of photos. However,
    the B/W photos (images) are actually gray tone (black monochrome) not binary


    People also to refer to monochrome displays; but these are not binary B/W
    either, since the display can display a range of gray (green, red, brown)
    values but adjusting the intensity of the electron beam.



    I would like to propose the following.


    Binary Image - An image composed of individual pixels having only two
    possible states and represented by a single binary value. Example: Black
    and White, Red and White, Blue and White, Blue and Red.


    Monochrome Image - An image composed of individual pixels having n number of
    possible states that corresponds to a graduation of tone of a single color
    and represented by 1 or more bytes per pixel. Examples: 8-Bit-Gray-Tone
    (256 states going from black to white) and 16-Bit-Sepia (65536 states going
    from brown to white)


    Color Image - An image composed of individual pixels having n number of
    possible states representing Hue, Value and Intensity where the Hue, Value
    and Intensity are represented as either indexed individual color values or
    color space coordinates. Examples: 8-Bit-RGB (256 possible indexed states),
    24-Bit-RGB ((8,8,8) = 16 million possible states), 48-Bit-RGB ((16,16,16) =
    2.8 E14 possible states), CMYK, HSV







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