The range of tones, from bright white to pitch black that can be reproduced in a film and print.

Variations in value from white, through shades of grey, to black of the original image picked up by a monochrome camera.

the result of removing color from an image and shading the image based on brightness

A strip of film or paper which shows different shades of gray, used in testing the sensitivity and contrast characteristics of photographic materials.

The ability to render properly the various brightness levels in a reproduced image. For a digitized signal, broadcast-quality gray scale is considered to be at least 256 shades of gray, which can be coded in an 8-bit picture element.

Gray scale can be viewed as a degenerate case of pseudo color, in which case the red, green, and blue values in any given color map entry are equal, thus producing shades of gray. The gray values can be changed dynamically.

A scale of tonal values reproducible in black and white printing.

An indication of how accurately subtle variations of gray, from white to near black, are reproduced.

The levels (shades) of gray that a screen or pixel within a screen can display. See bit depth.

The varying levels of gray a document can have; usually 16/32/64 gray levels.

Strip of swatches of gray tones ranging from white to black used by process camera operators to calibrate exposure times for film and plates. Also called step wedge.

documents which consist of levels of gray to create the image; for example, in aerial photographs. Hybrid --describes a drawing which is made up of both vector and raster data.

The number of gray levels used to represent the intensity levels in an image.

A term used to describe an image containing shades of gray rather than colour. Most commonly referred to as a black and white photo.

Black, white and shades of gray, as applied to computer graphics or imaging devices, such as a fax machine or photocopier; the variations in brightness that enhance clarity. In video, the manner in which the color temperature of a video monitor changes with the signal level (black being at a low signal level, white being at a high signal level, and gray being in between); tracking color accuracy. (See colorimetry, color temperature.)

A strip of film or paper displaying individuality uniform areas of density ranging from light to dark in a series of steps. Also sometimes called step tablets, they are used in testing the sensitivity and contrast characteristics of photographic materials.

A range of gray tones from black to white used to create an image.

Image is represented as varying shades of gray (similar to a B&W Television). Commonly quantified as shades of gray, as in 256 shades of gay.

a color-coding scheme that specifies a color in terms of gray components. Gray-scale color codes are commonly used with some laser printers and PostScript devices.

a color scale that ranges from black to white, with varying intermediate shades of gray

A pattern of vertical bars with shades of gray starting with white and gradually getting darker gray until ending at black. Most gray scales used in television have 10 steps or bars. The pattern is used to test the ability of a camera to reproduce true white, black and the varying steps of gray in-between.

A reference scale for use in black-and-white television and video-display images, consisting of several defined levels of brightness with natural color.

is a printed strip of tonal values, from pure black to pure white, usually divided into 10 zones. Each zone requires twice or half the exposure as the zones on either side. See also Zone System.

A narrow strip of paper containing an orderly progression in definite steps or patches of gray densities or printed halftone steps ranging in dot sizes from zero to 100%. A gray scale is used to analyze and optimize the contrast of black-and-white and colored reproductions. The gray scale may be reflection-type made on photographic paper, on a color proof, or printed on paper. On film, with definite steps of either continuous tone or halftone dots, it is called a step tablet. On film without definite steps, it is a continuous wedge. On film with dots and definite steps, it is a halftone scale. On a computer monitor, shades of gray are created by varying the intensity of the screen's pixels, rather than by using a combination of only black-and-white pixels to produce shading. Printed, it is produced as a narrow strip of paper, usually in the trim area of a job, and used for analyzing printing characteristics.

A scale showing the full range of gray tones between pure white and solid black. While most computer software used today recognizes 256 levels of gray, the human eye can only see 80 to 100 levels.

A photo made up of varying tones of black and white. Gray scale is synonymous with black and white.

The number of shades of gray that represent a monochrome picture.

The various shades of gray or luminance values in a video picture. As industrial test standards, gray wedges are used with discrete steps incrementing in brightness by factors of ~ 7. 3

An image made up of varying tones of black and white, containing no color, so grayscale is synonymous with black and white. The 256 gray levels system divides the gray scale into 256 sections with black at 0 and white at 255.

1. Graduated neutral tones used in printing to reflect color differentiation. 2. A film strip used in combination with original photography to check focus, provide print contrast, time development, measure density ranges, balance color, etc. Also, gray wedge; neutral wedge, or step tablet or wedge.

Refers to the range of light transmission in a number of steps, e.g., a 17 step gray scale for a monochrome product would have white (or very light gray), 15 shades of gray from light to dark, and black (or very dark gray) while in a color application, each primary complement (cyan, magenta, yellow) would vary from white, light through dark versions of the color, to fully saturated color. The three combined could make as many as 4,913 (17 x 17 x 17) colors.

An even range of gray tones between black and white.

A series of tones that range from true black to true white, usually expressed in 10 steps.

A strip of light to dark gray tones placed at the side of original copy when photographed to measure tonal range (gamma) and contrast.

The ability of a system to record both bright and weak echoes in varying shades of gray. The number of gray scale levels is a measure of the dynamic range.

The ability for a video display to reproduce a neutral image color with a given input at various levels of intensity.

Series of gray levels ranging from true white to true black. There are many subtle levels of gray within the overall gray scale ranging from slightly gray and almost white to very dark charcoal colors that are nearly black. The level of gray (or white or black) in a video signal is derived from the luminance portion of the signal.

Used for the transmission of photos and can have 16/32/64 gray levels.

In image processing, the range of available gray levels. In an 8-bit system, the gray scale contains values from 0 to 255.

A card or test chart containing a range of gray patches from white to black used in setting up gamma or the gray scale response of cameras.

The number of variations from white to gray to black.

The range of black-to-white gray shades available for displaying image data on the McIDAS-X Image Window. The range is 0 (black) to 255 (white).

A strip of standard gray tones, ranging from white to black, placed at the side of original copy during photography to measure tonal range and contrast obtained.

A strip of standard gray tones ranging from white to black, to measure the tonal range obtained during photography or plate exposure. See also: Sensitivity Guide. to top

1. As applied to an image, composed of (discrete) shades of gray. If the pixels of a gray-scale image have bits, they may take values from zero, representing black, up to 2-1, representing white. Intermediate values represent increasingly light shades of gray. If n=1, the image is not called gray-scale but black-and-white (or a line drawing). 2. A range of accurately known shades of gray printed out for use in calibrating those shades on a display or printer.

A visual chart showing bars varying from white to black going through steps of gray commonly in 10 stages.

A term applied to the gradations of shadings from white to black that result from attaching an RGB video board to a monochrome screen.

A digital prepress term referring to an image which has a tonal range comprised entirely of shades of black, gray and white. ALSO – A strip of gray values ranging from white to black. Used by process camera and scanner operators to calibrate exposure times for film and plates. Also called step wedge.

The various shades of gray or luminance values in a displayed image. An analog scale that goes from 0 (black) to 10 (white). There are two versions: one is linear, the other is logarithmic.

is a range of shades of gray in an image. Gray scales of scanners are determined by the number of grays, or values between black and white, that they can recognize and reproduce.

Variations in value from white, through shades of gray, to black (usually 256, 8 -bit image) on a television screen. The gradations approximate the tonal values of the original image picked up by the machine vision camera.

The spectrum, or range, of shades of black an image has. The gray scale range of a sensor is determined by the number of gray shades, or steps, they can recognize and reproduce. A camera that can only see a gray scale of 256 will not produce as accurate an image as one that distinguishes a gray scale of 512 or 1024. A gray scale of 256 steps is an 8-bit scale. A gray scale of 512 steps is a 9-bit scale. A gray scale of 1024 steps is a 10-bit scale. A gray scale of 4096 steps is a 12-bit scale.

Refers to a series of gray tones ranging from white to pure black. The more shades or levels of gray, the more accurately an image will look like a full-toned black and white photograph. Most scanners will scan from 16-256 gray levels. A gray scale image file is typically 1/3 the size of a color one.

A standardized card which works exactly like a color card except that it shows gradated black-to-white rather than colors.

A series of 256 tones raging from pure white to pure black.

An area of the screen reserved for displaying an increasing ramp of image intensities to be used as a calibration aid. Periodic intensity levels are labeled with the temperature or radiation value they represent. Half Width The full width of the passband of a filter measured between 50% transmission points.

Generally refers to a monochrome ordering of 256 shades between black and white which are assigned to raster picture elements (pixels) according to reflected light, heat, and/or other relative intensity measurements. Most common digital display option for scanned black and white orthophotos.

n. A sequence of shades ranging from black through white, used in computer graphics to add detail to images or to represent a color image on a monochrome output device. Like the number of colors in a color image, the number of shades of gray depends on the number of bits stored per pixel. Grays may be represented by actual gray shades, by halftone dots, or by dithering. See also dithering, halftone.

(1.) In Enhanced X-Windows, a type of degenerate pseudocolor where the red, green, and blue values in any given color map entry are equal, thus producing shades of gray. The gray values can be changed dynamically. (2.) Also GrayScale, a value. (3.) In a grayscale adapter, the different levels of intensity corresponding to the shades of gray produced.

An image type that contains more than just black and white, and includes actual shades of gray. In a grayscale image, each pixel has more bits of information encoded in it, allowing more shades to be recorded and shown. 4 bits are needed to reproduce up to 16 levels of gray, and 8 bits can reproduce a photo-realistic 256 shades of gray.

Strip of swatches of tone values ranging from white to black used by process camera operators to calibrate exposure times.

The use of many shades of grey to represent an image. Continuous-tone images, such as black-and-white photographs, use an almost unlimited number of shades of grey. Conventional computer hardware and software, however, can only represent a limited number of shades of grey (typically 16 or 256). Grey scaling is the process of converting a continuous-tone image to an image that a computer can manipulate. The binary range of a graphic representation between pure black and pure white. A scale of 256 shades of grey will be a better representation than 16 shades.

The spectrum, or range, of shades of black an image has. Scanners' and terminals' gray scales are determined by the number of gray shades, or steps, they can recognize and reproduce. A scanner that can only see a gray scale of 16 will not produce as accurate an image as one that distinguishes a gray scale of 256.

Variations of values from white, through shades of gray, to black in a digitized image with black assigned the value of zero and white the value of one.