R/preprocessing.R

image_to_array

3D array representation of images

Description

3D array that represents an image with dimensions (height,width,channels) or (channels,height,width) depending on the data_format.

Usage

 
image_to_array(img, data_format = c("channels_last", "channels_first")) 
 
image_array_resize( 
  img, 
  height, 
  width, 
  data_format = c("channels_last", "channels_first") 
) 
 
image_array_save( 
  img, 
  path, 
  data_format = NULL, 
  file_format = NULL, 
  scale = TRUE 
) 

Arguments

Arguments Description
img Image
data_format Image data format (“channels_last” or “channels_first”)
height Height to resize to
width Width to resize to
path Path to save image to
file_format Optional file format override. If omitted, the format to use is determined from the filename extension. If a file object was used instead of a filename, this parameter should always be used.
scale Whether to rescale image values to be within 0,255

See Also

Other image preprocessing: fit_image_data_generator(), flow_images_from_dataframe(), flow_images_from_data(), flow_images_from_directory(), image_load()