background layer
    decreasing pixels
    increasing size
background options
    quality
bg-subsample option



decreasing
    background pixels
    image blurring



error messages, displaying



fg-quality option
foreground/background balance



informational messages, displaying



other options
    verbose



pages-per-dict option



quality option



segmenter options
    bg-subsample
    threshold-level
shared shape dictionary files



text options
    fg-quality
    pages-per-dict
threshold-level option



verbose option