Digital Image Validation and Processing

Overview

DIVP is a commandline tool for turning folders of raw image scans into folders of image files suitable for other destinations such as HathiTrust. This processing can involve things like:

• validating that all of the pages are there
• correcting the image metadata
• validating that source images have the appropriate resolution
• compressing the images to meet the destination specifications
• creating a checksum file of the compressed images
• verifying that a given checksum file matches the other files in the folder

The divp process command works with shipments. A shipment is a folder full of items, which each item is a folder full of the image files that make up the item.

DIVP uses grok for JPEG2000 compression.

Developer setup

Clone the repo

git clone git@github.com:mlibrary/divp.git
cd divp

run the init.sh script.

./init.sh

run tests

docker compose run --rm app bundle exec rspec
docker compose run --rm app bundle exec rake test

run linting

docker compose run --rm app bundle exec standardrb --fix