@startuml

left to right direction
hide circle


package loader <<Frame>> {
interface ImageLoader
  package io_impl <<Frame>> {
    ImageIoLoader --|> ImageLoader
  }
}

package differ <<Frame>> {
  interface ImageDiffer
  package impl <<Frame>> {
    ImageDifferImpl -right-|> ImageDiffer
  }
}

package data <<Frame>> {
  class Image
  class DiffResult
}

Phosphorus -- ImageLoader
Phosphorus -- ImageDiffer
@enduml