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.