ee.Image.focalMax
Applies a morphological reducer() filter to each band of an image using a named or custom kernel.
| Usage | Returns |
|---|
Image.focalMax(radius, kernelType, units, iterations, kernel) | Image |
| Argument | Type | Details |
|---|
this: image | Image | The image to which to apply the operations. |
radius | Float, default: 1.5 | The radius of the kernel to use. |
kernelType | String, default: "circle" | The type of kernel to use. Options include: 'circle', 'square', 'cross', 'plus', 'octagon', and 'diamond'. |
units | String, default: "pixels" | If a kernel is not specified, this determines whether the kernel is in meters or pixels. |
iterations | Integer, default: 1 | The number of times to apply the given kernel. |
kernel | Kernel, default: null | A custom kernel. If used, kernelType and radius are ignored. |
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Last updated 2024-07-13 UTC.
[null,null,["Last updated 2024-07-13 UTC."],[[["Applies a morphological reducer, such as focalMax, to an image to alter pixel values based on neighboring pixels within a specified kernel."],["Offers flexibility in kernel selection with predefined shapes like circle, square, cross, plus, octagon, and diamond or allows custom kernels."],["Users can control the kernel size using radius and specify whether the unit is in pixels or meters."],["Enables iterative application of the kernel for intensified effects using the iterations parameter."],["Modifies each band of the input image independently, returning a new image with the transformed values."]]],["The `focalMax()` function applies a morphological reducer filter to each image band. It utilizes either a predefined kernel type (circle, square, cross, plus, octagon, diamond) or a user-defined custom kernel. The operation is applied iteratively, with the number of iterations specifiable. The kernel's size is determined by the `radius` parameter (in pixels or meters) or by the dimensions of the custom kernel. The method returns the processed image.\n"]]