Gradient

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Gradient

The slope,or change in elevation,of land or improvements such as a pipe or a road.It is expressed as the ratio of inches (or feet) of rise or fall over a specified distance. It is similar to the concept of pitch in roofing.Figure A (above) has a gradient of 1:12 because the grade increases by 1 foot over a distance of 12 feet. Figure B has a gradient of 1:6.

References in periodicals archive ?
The maximum gradient and the average gradient of the image are defined as:
where [Ave.sub.v], [Ave.sub.H] are average gradients in vertical and horizontal direction, respectively and AG is the average gradient of the fused image F.
Where Dg (fJ) means the gradient distribution of the estimate image of fJ, and the average Dg means the average gradient distribution of database face images which is shown in Fig.
As a result, considering the edge information of the source image, the region average gradient is selected as the linking strength to improve its self-adaptability in this paper.
Maximizing average gradient [G.sub.A] obtains more accurate contour and avoids oversegmentation.
Various metrics such as Qabf, VIF, Mutual Information, Average Gradient and Entropy are used to measure the image quality.
The average gradient can sensitively reflect the capability of a digital image contrast expression of tiny details and texture transformation characteristics, is used to evaluate the image blur degree.
The average gradient is about 24 percent and the "unofficial'' list cites a steepest grade of 30 percent.
The hardest was the 4.7-kilometer Holme Moss pass, and the steepest was also the shortest: The 800-meter Jenkin Road pass, with an average gradient of 10.8 percent -- just 5 kilometers from the finish line.
The slope gradient of each pixel is calculated based on DEM data and the average gradient threshold values of gully thalweg and gully edge line were measured in field.
First there was a 221km ride south from Givors just to get to Mont Ventoux, before the 21.5km ascent of 'God's Tomb', at an average gradient of 7.5% to the summit 1,912 metres above sea level.
With a 10 per cent average gradient and some pitches at 16 per cent, the day's final climb was labelled "steeper than Alpe d'Huez", according to race organiser, Belgian legend Eddy Merckx, in reference to the legendary alpine ascension.
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