average gradient


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average gradient

[′av·rij ′grād·ē·ənt]
(graphic arts)
A measure of contrast in a photographic image, expressed as the slope of a straight line joining two density points on the sensitometric curve.
References in periodicals archive ?
The deviation from the average gradient distribution of gallery face images demonstrated in Figure 3 can measure the image quality of a recovered face image in the stage of an optimization.
Average gradient reflects the image clarity and is given by:
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.
7-kilometer Holme Moss pass, and the steepest was also the shortest: The 800-meter Jenkin Road pass, with an average gradient of 10.
Stage Three (Tuesday, September 9) Newtown to The Tumble, 150km: A hilly stage through mid-Wales concludes with a 6km final climb of The Tumble, which has an average gradient of 7.
5km ascent of 'God's Tomb', at an average gradient of 7.
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.
CYCLING: Mark Jones (Alf Jones cycles) won Rhyl CC's annual hill climb on Rhuallt Hill next to the A55, clocking five mins 27 secs for the 10% average gradient.

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