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.

Farlex Partner Medical Dictionary © Farlex 2012

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.

Medical Dictionary for the Health Professions and Nursing © Farlex 2012

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.

Medical Dictionary for the Dental Professions © Farlex 2012

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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.

High-Precision Heading Determination Based on the Sun for Mars Rover

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.

An efficient stereo matching method to reduce disparity quantization error

After four parameters are determined, the formula for subpixel edge detection can be deduced from Figure 2:

Edge Detection in UAV Remote Sensing Images Using the Method Integrating Zernike Moments with Clustering Algorithms

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.

Parametric Study to Improve Subpixel Accuracy of Nitric Oxide Tagging Velocimetry with Image Preprocessing

Subpixel mapping and pixels spatial dependence theory were initially proposed by Atkinson [1].

Subpixel Mapping Method of Hyperspectral Images Based on Modified Binary Quantum Particle Swarm Optimization

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.

S4: an O2R/R2O infrastructure for optimizing satellite data utilization in NOAA numerical modeling systems: a step toward bridging the gap between research and operations: an infrastructure has been established to engage the broader research community that is working on improving satellite data utilization in NOAA numerical modeling systems.

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.

A novel natural image super resolution reconstruction algorithm based on compressed sensing and deep learning

Through the careful control and variation of the voltage applied, the intensity of each subpixel can range over 256 shades.

In Depth: A peek inside your display