# imgradientxy

Find directional gradients of 2-D image

## Description

## Examples

## Input Arguments

## Output Arguments

## Tips

When applying the gradient operator at the boundaries of the image, values outside the bounds of the image are assumed to equal the nearest image border value.

## Algorithms

The algorithmic approach is to compute directional gradients
with 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.

`imgradientxy`

does not normalize the gradient
output. 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 example,
with a Sobel kernel, the normalization factor is 1/8, and for Prewitt,
it is 1/6.

## Extended Capabilities

## Version History

**Introduced in R2012b**

## See Also

`edge`

| `fspecial`

| `imgradient`

| `imgradient3`

| `imgradientxyz`