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A heightmap created with Terragen The same heightmap converted to a 3D mesh and rendered with Anim8or. In computer graphics, a heightmap or heightfield is a raster image used mainly as Discrete Global Grid in secondary elevation modeling. Each pixel stores values, such as surface elevation data, for display in 3D computer graphics.
The advantage over 8-bit or 16-bit integers is that the increased dynamic range allows for more detail to be preserved in highlights and shadows for images, and avoids gamma correction. The advantage over 32-bit single-precision floating point is that it requires half the storage and bandwidth (at the expense of precision and range).
A common example is the Data General Nova, which was a 16-bit design that performed 16-bit math as a series of four 4-bit operations. 4-bits was the word size of a widely available single-chip ALU and thus allowed for inexpensive implementation. Using the definition being applied to the 68000, the Nova would be a 4-bit computer, or 4/16.
16-bit audio, 32 kHz sampling rate; Optional Dolby Surround support; Stereo audio with: 4 FM synthesis channels/voices; 3 square wave channels/voices; 1 white noise generator; 6 ADPCM channels (12-bit) @ 18.5 kHz sampling rate [74] 1 ADPCM channel (16-bit) @ 1.8 to 55.5 kHz sampling rate [74]
Depending on the intended use of a depth map, it may be useful or necessary to encode the map at higher bit depths. For example, an 8 bit depth map can only represent a range of up to 256 different distances. Depending on how they are generated, depth maps may represent the perpendicular distance between an object and the plane of the scene camera.
The Atari ST series has a digital-to-analog converter of 3-bits, eight levels per RGB channel, featuring a 9-bit RGB palette (512 colors).Depending on the (proprietary) monitor type attached, it displays one of the 320×200, 16-colors and 640×200, 4-colors modes with the color monitor, or the high resolution 640×400 black and white mode with the monochrome monitor.
Red (A), Green (B), Blue (C) 16 bit look up table file sample. (Lines 14 to 65524 not shown) In the film and graphics industries, 3D lookup tables (3D LUTs) are used for color grading and for mapping one color space to another.
Depending on the color depth, a pixel in the picture will occupy at least n/8 bytes, where n is the bit depth. For an uncompressed, packed-within-rows bitmap, such as is stored in Microsoft DIB or BMP file format, or in uncompressed TIFF format, a lower bound on storage size for a n-bit-per-pixel (2 n colors) bitmap, in bytes, can be calculated as: