Fundamentals of Wearable Computers and Augmented Reality, 2nd Edition

472 Fundamentals of Wearable Computers and Augmented Reality

(c) (d)

(a)

(b)

FIGURE 18.6 Edge-directed upscaling of an example photograph using the method of

Kraus etal. (2007): (a) Original image size with (b) enlarged detail, (c) upscaled photograph

with (d) enlarged detail.

(a) (b) (c)

FIGURE 18.7 Comparison of different methods for integrating a virtual element into a

camera image. A virtual stop sign object is drawn over a real street scene. (a) No antialiasing,

(b) pixel averaging in the original resolution, and (c) real–virtual supersampling (4×).

473Visual Consistency in Augmented Reality Compositing

18.5.2 occlusion handlinG

One of the most ...