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 ?
Besides the texture feature and the edge gradient feature, we also select second-order derivatives as the features of low-resolution patches.
In this paper, the statistical method of 8-direction chain code was applied to the statistics for edge gradient direction, so as to propose a novel edge gradient orientation statistical code (EGOSC), which was sequentially used as feature vector to represent the shape.
At first, we use Sobel filter to obtain the edge gradients, and orientations were calculated from each pixel in this local region.