grayscale. the range of shades of black an image has; the color of a digital image captured or preserved in shades of black (rather than color or pure black and white) ...
A grayscale image can normally be vectorized using R2V's Vector/Auto Vectorize command.
Native binary, grayscale and color format support
Histogram
Density Slicing ...
Now repeat this procedure for ImageData2 and ImageData3N, each time saving the grayscale image as a .tif file. Why, you are asking, are we saving three grayscale images of the same thing?
I used Adobe Photoshop CS2 to smooth out the offending artifacts by importing the bathymetry elevation data as a 16-bit grayscale image-think of it as a type of raster Digital Elevation Model (DEM).
In a geo-registered B&W aerial photo, the dots are assigned a grayscale color from black (no reflected light) to white (lots of reflected light).
Images of 8 bits and fewer can be either grayscale or indexed color. An alpha channel (for transparency) may be stored in a separate file, where it is similar to a grayscale image, ...
The image is shown in grayscale by default. It appears more "smooth" than the grid.
When the image theme is active, many of ArcView's tools and buttons are disabled, including the identify and contour tools and the histogram button.
[remote sensing] A technique normally applied to a single-band monochrome image for highlighting areas that appear to be uniform in tone, but are not. Grayscale values (0-255) are converted into a series of intervals, or slices, ...
Permanent ground monument; Petermanns Geographische Mitteilungen; Portable Grayscale Map
.PGM
Portable Graymap (format) ...
 See also: Image, Information, Digital, Feature, GIS
  
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