Revisions of gradients

Consider a room in which the temperature is given by a scalar fieldT, so at each point x, y, z the temperature is T x, y, z.

Revisions of gradients

Gx — Directional gradients along x-axis horizontal numeric matrix gpuArray Directional gradient along x-axis horizontalspecified as a numeric matrix equal in size to image Itypically returned by imgradientxy.

Revisions of gradients

To calculate the gradient magnitude and direction using a GPU, specify Gx as a gpuArray that contains a numeric matrix. To calculate the gradient magnitude and direction using a GPU, specify Gy as a gpuArray that contains a numeric matrix. Gmag is of class double, unless the input image I is of class single, in which case it is of class single.

If you use a GPU to compute the gradient magnitude and direction, then Gmag is returned as a gpuArray that contains a numeric matrix. Gdir contains angles in degrees within the range [ ] measured counterclockwise from the positive x-axis.

The x-axis points in the direction of increasing column subscripts.

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Gdir is of class double, unless the input image I is of class single, in which case it is of class single. If you use a GPU to compute the gradient magnitude and direction, then Gdir is returned as a gpuArray that contains a numeric matrix.

Revisions of gradients

Algorithms The algorithmic approach taken in imgradient for each of the listed gradient methods is to first compute directional gradients, Gx and Gywith respect to the x-axis and y-axis. The x-axis is defined along the columns going right and the y-axis is defined along the rows going down.

The gradient magnitude and direction are then computed from their orthogonal components Gx and Gy.

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If the range of the gradient output image has to match the range of the input image, consider normalizing the gradient image, depending on the method argument used.For Professionals (2) Approach to dwelling from parking (distance, gradients and widths) Principle: Enable convenient movement between the vehicle and dwelling for the widest range of people, including those with reduced mobility and/or those carrying children or shopping.

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Gradient - Wikipedia