Jag Free Images on a Raster CRT

Abstract

This paper presents an algorithm for removing all kinds of jags (staircase-like effects) due to the aliasing phenomenon which is intrinsic in all synthesized wire frame and continuous-tone images displayed on raster CRT’s.

This algorithm produces images whose quality is virtually equal to the results obtainable by the use of far more elaborate techniques but nevertheless the implementation and the computational costs of the algorithm are extremely low. This and other important features of the algorithm have been proven by numerous experimental results and succesfull practical implementations.

The actual implementation of the algorithm was carried out for two types of aliasing. First as a smooth vector generator for wire frames and second as an anti-aliasing post processor for continuous-tone image outputs, both being implemented locally as intelligent features on the display sites.

Because of its universality, speed, accuracy and low implementation cost, the algorithm can be inexpensively hardwarized, providing an effective anti-aliasing tool for practical applications.

former name: Wieslaw Romanowski