From Portable Network Graphics (PNG) Specification (Second Edition) ( 2003-11-10) image representation in which each pixel is defined by a single sample of colour information, representing overall luminance (on a scale from black to white), and optionally an alpha sample (in which case it is called greyscale with alpha).
A greyscale or grayscale (depending on which continent you're on) image is made up of different percentage of blacks, from 0% or white, to 100% or pure black. You can also say it's the tonal scale of grey.
An image made up of multiple grey values.
An image composed of black, white and intermediate shades of grey. Although greyscale can be represented in colour, file sizes are larger as a result of unused data. There are normally 256 shades of grey in a greyscale image.
colour mode made up of 256 shades of grey, including white and black. If a logo or drawing is made up of shades of grey, it is a greyscale image. If a logo or drawing is made up of black and white lines, then it is a bitmap image. Greyscale Bitmap hairline The thinnest (finest) line that can be created by a printer or platemaker. This varies between machines. Although a hairline can be seen on a printing plate, it is often too fine to hold any ink. It is best to avoid using hairlines - use lines of 0.3 points or thicker. lpi ines er nch - describes printer resolution (or "linescreen") by the number of half-tone lines per inch (lpi) that the printer can output - we output at 150lpi. (Higher lpi means higher quality printed output. Newsprint is typically 85lpi.)
The brightness of a pixel expressed as a value representing it's lightness from black to white: Usually defined as a value from 0 to 255, with 0 being black and 255 being white. A term used to describe an image containing shades of grey as well as black and white.
This is a color mode where there are no colors in use. There is just black, white, and various shades in between. In the print world, a greyscale image is actually made up of just black ink. The value of the grey depends on the density and size of the black dots printed. In photographs, halftones are produced to simulate various shades.
Known by photographers as a black and white image.
A term used in photography and film. Basically it means that only shades of grey are used to define the image.
(8 bit) - Usually refers to a continuous tone image (typically 256 shades of grey).
A bitmap image format that containing shades of grey values as opposed to only pure black and pure white. This format is used for single colour usually black photographs and images. There are 256 possible values of grey from white to pure black.
Shades of grey that represent light and dark portions of an image. Colour images can also be converted to greyscale where the colours are represented by various shades of grey.
The use of various shades of grey along with pure black and white to produce an image.
Term given to black and white images. Digital black and white images are not composed of just two shades, but may be composed of hundreds to provide higher quality.
An image type that uses black, white, and a ranges of shades of grey. The number of shades of grey depends on the number of bits per pixel. The larger the number of shades of grey, the better the image will look, and the larger the file will be. Image The digitised representation of a picture, graphic or document.
A continuous tone image comprising of black, white, and grey data.
The range of shades of grey in an image. The grey scales of scanners and terminals are determined by the number of greys, or steps between black and white, that they can recognise and reproduce.
Range of up to 256 tones between black and grey.
A colour mode that displays images using 256 shades of grey. Used for black & white photographic images.
(US "gray-scale") 1. Composed of (discrete) shades of grey. If the pixels of a grey-scale image have N bit s, they may take values from zero, representing black up to 2^N-1, representing white with intermediate values representing increasingly light shades of grey. If N=1 the image is not called grey-scale but could be called monochrome.
An image containing a range of grey levels as opposed to only pure black and pure white.
the depiction of grey tones between black and white halftone image: represents an image which has had the tones translated into solids and various dot sizes to represent to the eye a continuous tone result
In digital photography black-and-white pictures are known as greyscales. They have 256 fixed tones of grey which run from 0 (black) to 255 (white) with greys numbered 1 to 254 in between.
Scanners. 1. An image type consisting of shades of grey, with no colour. The standard greyscale image contains 8 bits per pixel, which allows for 256 shades. 2. The depiction of grey tones between black and white. A greyscale monitor is able to display distinct grey pixels as well as black and white ones, but not colour pixels. 3. An orderly variable progression in definite steps of grey densities ranging from minimum zero (white) to maximum density (black). A strip of standard grey tones placed at the side of the original copy during a photography to measure tonal range obtained. Used in processing film or materials such as photographic paper and plates.
