imgUnsharpen {biOps}R Documentation

Unsharpens an image with selected mask

Description

This function unsharpens an image by convoluting with one of the following matrices:
1 || 2 || 3 1
0 -1 0 || -1 -1 -1 || 1 -2 1
-1 5 -1 || -1 9 -1 || -2 5 -2
0 -1 0 || -1 -1 -1 || 1 -2 1

Performs a difference between original image and sharpen convolved image with the specified mask

Usage

imgUnsharpen (imgdata, mask)

Arguments

imgdata The image
mask The matrix to be used in the convolution. Must be one of 1, 2, 3 (default=1)

Value

return an imagedata object

Examples

        ## Not run: 
                x <- readJpeg(system.file("samples", "violet.jpg", package="biOps"))
                y <- imgUnsharpen(x, 2)
        
## End(Not run)

[Package biOps version 0.2.1 Index]