Scene Simulation for a New Type of Armored Equipment Simulator - Advances in Image and Graphics Technologies - page 227

2.4 The Sense Simulation of Movement Speed and Depth

The sense of speed is important to improve the fidelity of driving simulation training.
Comparing with the actual driving, the sense of speed in virtual scene also needs
reference[4]. We can see from Figure 4, there are a lot of trees on both sides of the
road, the ground grid and not flat state can enhance the speed sense of tank driver.

Fig. 4. The road simulation effect having reference

The sense of distance influence the driver to determine the distance accurately,
especially designated parking, obstacles and restrictions training is obvious. The
display produces the plane, so the sense of distance is usually realized through the
stereo imaging and virtual way. By evaluating the advantages and disadvantages of
various methods, the system software adopt hierarchical modeling mode, it can show
the effect of the different prominence, we use the positive projection image system,
then we can generate wide field angle and high resolution scene.

3 The Design of Visual Display System

The Scheme of Virtual System 3.1

Visual display system is an important part of the virtual battlefield environment, its
main function is to provide the graphics to the observer using display device or
equipment. The depth is an important index of visual fidelity degree, virtual display
and stereo implementation can provide realistic depth. WIDE (wide-angle infinity
display equipment) system is a commonly used off-axis virtual image display system,
it is composed by projector, spherical mirror and scattering screen [5-6]. According to
the imaging way on the scattering screen, it can be divided into positive projection
and back projection. The principle diagram of positive projection image display
system is shown in figure 5.