3D array representation of images

Source: R/preprocessing.R

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

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

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()