ee.Kernel.inverse

    • The Kernel.inverse() method returns a new kernel where each weight of the original kernel is multiplicatively inverted.

    • Weights with a value of zero in the original kernel remain zero in the inverted kernel.

    • This method takes a kernel as input and returns a Kernel .

     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) 

     sobel_kernel 
 = 
 ee 
 . 
 Kernel 
 . 
 sobel 
 () 
 display 
 ( 
 'Sobel kernel weights:' 
 , 
 sobel_kernel 
 ) 
 #  [-1, 0, 1] 
 #  [-2, 0, 2] 
 #  [-1, 0, 1] 
 display 
 ( 
 'Inverse of Sobel kernel weights:' 
 , 
 sobel_kernel 
 . 
 inverse 
 ()) 
 #  [-1.0, 0.0, 1.0] 
 #  [-0.5, 0.0, 0.5] 
 #  [-1.0, 0.0, 1.0]
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