average gradient


Also found in: Dictionary, Thesaurus, Medical, Financial.

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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
According to the characteristics of the human visual system, the maximum gradient and the average gradient are integrated to generate the final quality score of the SEM images.
Glyn and Graham completed the 21km Stelvio pass, which has an average gradient of 7%, with the summit approx 10,000 ft above sea level.
Gaviria is sure to be in the mix again after confirming he is the speedster to beat yesterday but, while it may not be too much of an inconvenience for the Colombian, the final kilometre does rise at an average gradient of three per cent - ideal terrain for world champion Peter Sagan.
In one study, the average gradient within the shipper was 0.8[degrees]C.
According to information received from ASO, the peloton will tackle six stages totalling 914.5 kilometres with the race, for the eighth consecutive edition, to feature a summit finish on Jebel Akhdar (Green Mountain), a 5.7 km climb with an average gradient of 10.5 percent.
Average gray, standard deviation, average gradient, information entropy, and edge intensity are used for quantitative analysis.
Italian champion Aru launched a blistering attack in the final stretches of the fifth stage, jumping away from the leading group with 2.3km left of the 5.9km climb at a lung-busting average gradient of 8.5 per cent.
Actually, an average gradient distribution curve over given gallery sharp face images is utilized for creating NR-IQA measure of a restored face image.
Firstly, for the sake of implementing the adaptability of PCNN, the average gradient of each pixel is utilized as the linking strength.
Based on the above a priori knowledge, these three parts, that is, between-class variance, within-class variance, and average gradient, are defined as follows.

Full browser ?