| imgFreiChen {biOps} | R Documentation |
This function enhaces image's edges by convoluting with the Frei-Chen method matrices:
| H_r | H_c | |||||
| 1 | 0 | -1 | || | -1 | -sqrt(2) | -1 |
| sqrt(2) | 0 | -sqrt(2) | || | 0 | 0 | 0 |
| 1 | 0 | -1 | || | 1 | sqrt(2) | 1 |
imgFreiChen(imgdata)
imgdata |
The image |
return an imagedata object
## Not run:
x <- readJpeg(system.file("samples", "violet.jpg", package="biOps"))
y <- imgFreiChen(x)
## End(Not run)