ee.Kernel.inverse

Returns a kernel which has each of its weights multiplicatively inverted. Weights with a value of zero are not inverted and remain zero.

Usage	Returns
Kernel.inverse()	Kernel

Argument	Type	Details
this: kernel	Kernel	The kernel to have its entries inverted.

Examples

Code Editor (JavaScript)

var sobelKernel = ee.Kernel.sobel();
print(sobelKernel);

/**
 * Output weights matrix
 *
 * [-1, 0, 1]
 * [-2, 0, 2]
 * [-1, 0, 1]
 */

print('Inverse of Sobel kernel weights', sobelKernel.inverse());

/**
 * [-1.0, 0.0, 1.0]
 * [-0.5, 0.0, 0.5]
 * [-1.0, 0.0, 1.0]
 */

Python setup

See the Python Environment page for information on the Python API and using geemap for interactive development.

import ee
import geemap.core as geemap

Colab (Python)

from pprint import pprint

sobel_kernel = ee.Kernel.sobel()
pprint(sobel_kernel.getInfo())

# Output weights matrix

#  [-1, 0, 1]
#  [-2, 0, 2]
#  [-1, 0, 1]

print('Inverse of Sobel kernel weights:')
pprint(sobel_kernel.inverse().getInfo())

#  [-1.0, 0.0, 1.0]
#  [-0.5, 0.0, 0.5]
#  [-1.0, 0.0, 1.0]