handwriter (version 3.1.1)

process_batch_list: Process Batch List

Description

Process a list of handwriting samples saved as PNG images: (1) Load the image and convert it to black and white with readPNGBinary() (2) Thin the handwriting to one pixel in width with thinImage() (3) Run processHandwriting() to split the handwriting into parts called edges and place nodes at the ends of edges. Then combine edges into component shapes called graphs. (4) Save the processed document in an RDS file. (5) Optional. Return a list of the processed documents.

Usage

process_batch_list(images, output_dir, skip_docs_on_retry = TRUE)

Value

A list of processed documents

Arguments

images

A vector of image file paths

output_dir

A directory to save the processed images

skip_docs_on_retry

Logical whether to skip documents in the images arguement that caused errors on a previous run. The errors and document names are stored in output_dir > problems.txt. If this is the first run, process_batch_list will attempt to process all documents in the images arguement.

Examples

if (FALSE) {
images <- c('path/to/image1.png', 'path/to/image2.png', 'path/to/image3.png')
process_batch_list(images, "path/to/output_dir", FALSE)
docs <- process_batch_list(images, "path/to/output_dir", TRUE)
}