User manual

Small Vision System User Manual 44
3.7 Performance
Using standard PC hardware, running either MS Windows 95/98/ME/2000/XP/NT or Linux, the SVS
can compute stereo range in real time. Table 3-1 gives some typical timings for a 500 MHz Pentium III
processor. Because the Stereo Engine has a very small memory footprint, the timings scale almost
linearly with increasing processor speed. These timings include the complete stereo algorithm detailed
above: dewarping of input images, disparity computation and interpolation, and post-filtering using a
texture filter and left/right filter.
Frame size Number of
Disparities
Frame Rate
160x120 16 180 Hz
160x120 32 100 Hz
320x240 16 45 Hz
320x240 32 24 Hz
640x480 32 6 Hz
Table 3-1 Processing rates on a Pentium III
500 MHz machine.