whitebox (version 2.4.0)

wbt_canny_edge_detection: Canny edge detection

Description

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
)

Value

Returns the tool text outputs.

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.