Canny edge detection — wbt_canny_edge

This tool performs a Canny edge-detection filter on an input image.

Usage

wbt_canny_edge_detection(
  input,
  output,
  sigma = 0.5,
  low = 0.05,
  high = 0.15,
  add_back = FALSE,
  wd = NULL,
  verbose_mode = NULL,
  compress_rasters = NULL,
  command_only = FALSE
)

Arguments

input: Name of the input raster image file.
output: Name of the output raster image file.
sigma: Sigma value used in Gaussian filtering, default = 0.5.
low: Low threshold, default = 0.05.
high: High threshold, default = 0.15.
add_back: Add the edge cells back to the input image.
wd: Changes the working directory. Default: NULL will use the value in WhiteboxTools settings, see wbt_wd() for details.
verbose_mode: Sets verbose mode. If verbose mode is FALSE, tools will not print output messages. Default: NULL will use the value in WhiteboxTools settings, see wbt_verbose() for details.
compress_rasters: Sets the flag used by 'WhiteboxTools' to determine whether to use compression for output rasters. Default: NULL will use the value in WhiteboxTools settings, see wbt_compress_rasters() for details.
command_only: Return command that would be executed by system() rather than running tool. Default: FALSE.

Value

Returns the tool text outputs.