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

MFD> Binary Versus MonoChrome Versus Color

From: Petrie, Glen (glen.petrie@eitc.epson.com)
Date: Tue Dec 18 2007 - 14:49:21 EST

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    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
    graduations

    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
    B/W.

     

    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

     

    Glen

     

     

     

     



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