Draw token bounding boxes — draw

Plots the token (i.e., word) bounding boxes identified by Document AI (DAI) onto images of the submitted document. Generates an annotated .png file for each page in the original document.

draw_tokens(
  object,
  type = "sync",
  prefix = NULL,
  dir = getwd(),
  linecol = "red",
  linewd = 3,
  fontcol = "blue",
  fontsize = 4
)

Arguments

object: either a HTTP response object from dai_sync() or the path to a JSON file from dai_async().
type: one of "sync" or "async", depending on the function used to process the original document.
prefix: string to be prepended to the output png filename.
dir: path to the desired output directory.
linecol: color of the bounding box line.
linewd: width of the bounding box line.
fontcol: color of the box numbers.
fontsize: size of the box numbers.

Value

no return value, called for side effects.

Details

Not vectorized, but documents can be multi-page.

Examples

if (FALSE) { # \dontrun{
resp <- dai_sync("page.pdf")
draw_tokens(resp)

draw_tokens("page.json", type = "async")
} # }