Method and apparatus for the improvement of the presentation of characters and graphics of an output medium, especially of a printer

Abstract

Abstract A method for improving the presentation of multi-coloured or of single-coloured graphic characters containing grey tones on an output medium, particularly a printer, is described, by means of which even very fine colour graduations can be easily recognised without great expenditure, particularly memory expenditure. According to the invention, this is achieved by determining and printing the contours of the graphic characters successively character by character and dividing the image to be presented into foreground and background and by evaluating hue or grey step. Furthermore, the contours of the respective edges of characters with respect to adjacent characters are determined and a character-internal contour determination is carried out by comparing the pixels located next to one another within a row line by line and column by column, the evaluation taking place with respect to the image background in the case of the last character of a line or the last character line. <IMAGE>

Inventors

• 👤 Gerhardt Dipl.-Ing. Berk (Fh)
• 👤 Jürgen Malter

Bibliographic Details