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A voxel is a three-dimensional counterpart to a pixel. It represents a value on a regular grid in a three-dimensional space . Voxels are frequently used in the visualization and analysis of medical and scientific data (e.g. geographic information systems (GIS)). [ 1 ]
In computer graphics, a texel, texture element, or texture pixel is the fundamental unit of a texture map. [1] Textures are represented by arrays of texels representing the texture space, just as other images are represented by arrays of pixels. Texels can also be described by image regions that are obtained through simple procedures such as ...
The word pixel is a combination of pix (from "pictures", shortened to "pics") and el (for "element"); similar formations with 'el' include the words voxel [4] ' volume pixel ', and texel ' texture pixel '. [4] The word pix appeared in Variety magazine headlines in 1932, as an abbreviation for the word pictures, in reference to movies. [5]
Usually these are acquired in a regular pattern (e.g., one slice for each millimeter of depth) and usually have a regular number of image pixels in a regular pattern. This is an example of a regular volumetric grid, with each volume element, or voxel represented by a single value that is obtained by sampling the immediate area surrounding the ...
For example, a standard 24 bits per pixel, 1024×768 resolution, flat/2D display requires about 135 MB/s to be sent to the display hardware to sustain 60 frames per second, whereas a 24 bits per voxel, 1024×768×1024 (1024 "pixel layers" in the Z axis) volumetric display would need to send about three orders of magnitude more (135 GB/s) to the ...
In computer graphics, per-pixel lighting refers to any technique for lighting an image or scene that calculates illumination for each pixel on a rendered image. This is in contrast to other popular methods of lighting such as vertex lighting, which calculates illumination at each vertex of a 3D model and then interpolates the resulting values over the model's faces to calculate the final per ...
8-connected pixels are neighbors to every pixel that touches one of their edges or corners. These pixels are connected horizontally, vertically, and diagonally. In addition to 4-connected pixels, each pixel with coordinates ( x ± 1 , y ± 1 ) {\displaystyle \textstyle (x\pm 1,y\pm 1)} is connected to the pixel at ( x , y ) {\displaystyle ...
Dexel ("detector element") is the analog of a pixel ("picture element") but native to a detector rather than a visible picture. [6] [7] That is, it describes the elements in a detector, which may be processed, combined, resampled, or otherwise mangled, before creating a picture. As such, there may not be a one-to-one correspondence between the ...