pixel

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pixel

 [pik´sel]
a picture element; a CT scan or PET scan is composed of an array of squares (pixels), each of which is colored a uniform shade of gray or another color. The corresponding region in the tissue slice that is imaged is called a voxel (volume element).

pix·el

(pik'sĕl),
A contraction for picture element, a two-dimensional representation of a volume element (voxel) in the display of the CT or MR image, usually 512 × 512 or 256 × 256 pixels, respectively.

pixel

A portmanteau for picture element, the smallest discrete two-dimensional unit of a digital image.

pix·el

(piks'ĕl)
A contraction for picture element, a two-dimensional representation of a volume element (voxel) in the display of the CT or MR image, usually 512 by 512 or 256 by 256 pixels respectively.

pix·el

(piks'ĕl)
Contraction for picture element, two-dimensional representation of a volume element (voxel) in the display of the computed tomographic or magnetic resonance image, usually 512 × 512 or 256 × 256 pixels, respectively.
References in periodicals archive ?
(4) According to the subpixel edge points, the ellipse's center is fitted and the value of the cost function [J.sub.e] is calculated.
Goodson, "Subpixel displacement and deformation gradient measurement using digital image/ speckle correlation," Optical Engineering, vol.
Scramble imgData by swapping each subpixel [p.sub.m] (m = 0, l,...,3xHxW-2) with another subpixel located at [[pk.sub.m].
If Slope c1> Slope c2 Then Subpixel precision is d1 If slope c2 > c3 Then Subpixel precision is d2 If slope c2>cl Then Subpixel precision is d2 Else Subpixel precision is d1 Endif 4.
After four parameters are determined, the formula for subpixel edge detection can be deduced from Figure 2:
Having realized the potential application of [N.sub.2]O MTV for in-cylinder air flow studies, the authors here investigated the effect of image SNR and laser line width (LW) on the subpixel accuracy of flow displacements.
Subpixel mapping and pixels spatial dependence theory were initially proposed by Atkinson [1].
It shows that our method can get the subpixel vessel profile even if the contrast of the vessel is bad as shown in the right part of the row and it also can ignore the disease area shown in the right part of the row.
For example, a new cloud detection method that uses the spatially and temporally collocated high spatial resolution imager data (i.e., MODIS) for the hyperspectral IR sounder [i.e., Atmospheric Infrared Sounder (AIRS)] subpixel cloud characterization (Li et al.
The linear regularization parameter has a certain restraining effect on the recovery of the high frequency components, while the suppression effect on the subpixel level noise information is small, so that the reconstructed image is fuzzy or has obvious noise ripples and then this paper proposes nonlinear regularization parameters and ensures the convexity of the cost functions and regularization parameters.
Through the careful control and variation of the voltage applied, the intensity of each subpixel can range over 256 shades.