Reducing apprearance differences between coded and noncoded units of text

摘要: Methods and apparatus, including computer program apparatus systems, for processing text that includes coded (character based) noncoded (image representations of text. The invention deriving a correction factor from representation second unit an original the text, modifying first in accordance with factor, where common font typeface is attributed to both units. can be calculated by rendering generate rendered representation, calculating reference ratio optical density inverting calculate factor. Where word, word adjusted bitmap pixels are added to, or removed from, bitmap, left unchanged, according value