Technique to correct displacement of vector drawings on scaled underlying raster image

The problems of vector graphics displacement over raster drawing due to magnification in Java Graphics2D are described. Demarcation of engineering drawing is a process of highlighting sections of interest by drawing clouds. The clouds were stored as an array of points that are combined with background image at runtime. Magnification of background causes unexpected displacement of newly drawn clouds. This may be a common but unreported problem for interactive drawing in Java Graphics2D. The paper proposed a technique that successfully corrects the issue.