ee.Image.focalMin
Applies a morphological reducer() filter to each band of an image using a named or custom kernel.
| Usage | Returns |
|---|
Image.focalMin(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, `focalMin()`, to each band of an image."],["Uses a kernel specified by type ('circle', 'square', etc.), radius, and units (pixels or meters) to define the neighborhood for reduction."],["Allows custom kernels to override default kernel settings for more specialized operations."],["Optionally, performs the reduction multiple times using the `iterations` parameter."],["Returns a new image with the filter applied."]]],["The `focalMin()` function applies a morphological reducer filter to each image band. It utilizes either a predefined kernel type (circle, square, etc.) or a user-defined kernel. Key actions include specifying the kernel's radius, type, units (pixels or meters), and iterations. The function can also utilize a custom kernel, in which case the kernel type and radius are disregarded. The output is an image with the filter applied.\n"]]