I'm trying to compute the pixel value by using the neighboring pixels as input in tiff image
Attached the pixel image. what I want is,
Output Pixel Vaule of cell 5 = 4*Input Pixel value of cell 5 - (Sum of pixel values of cells 2,4,6,8)
How to perform this operation for all the pixels in the tiff image?
If anyone knows about it, please provide the detailed steps to do so using any software/tool.
Thank You
Ákos Bede-Fazekas
Dear Sravanth,
In R statistical software you can use function raster() from package 'raster' for loading the tiff file. Then function focal(x, w, fun = sum) is what you need to use with a weight matrix: w = matrix(c(0, -1, 0, -1, 4, -1, 0, -1, 0), nrow = 3).
HTH,
Ákos
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