Hardware Design Considerations for Edge-Accelerated Stereo Correspondence Algorithms

Table 1

Features of the FPGA Prototypes.

Feature	Fixed-support-based architecture	ADSW-based architecture
Adopted algorithm	SAD-based Fixed-support algorithm	Adaptive-support weight algorithm
Image size	1280×1024 pixels (8-bit grayscale)	800×600 pixels (24-bit RGB color images)
Disparity range	120	64
Support window size	11×11	11×11
Device	Virtex-5 LX110T FPGA	Virtex-5 LX110T FPGA
Frequency	100 MHz	155 MHz
Memory bandwidth	32 bits/cycle	48 bits/cycle
Processing speed	150 fps	30 fps