Hardware Design Considerations for Edge-Accelerated Stereo Correspondence Algorithms

Table 8

Hardware overheads of the edge-directed fixed-support-based architecture (System 2) (image size = 1280 × 1024, max disparity range = 120, window size = 11 × 11).

Design unit	Slice LUTs	Slice registers	Block RAMs	DSP48Es	Frequency
	(69120)	(69120)	(148)	(64)	(MHz)
Edge Detection Unit (EDU)	2812 (~4%)	1008 (~3%)	0	0	134.6
ABDIF and BTA	129 (~0.2%)	0	0	0	N/A
Tree Comparators	1760 (~2.5%)	329 (~0.5%)	0	0	174.3
Disparity Computation Unit (DCU)	47331 (~68%)	31863 (~46%)	0	0	109
Microblaze system and external Memory CONTROLLER	7754 (~11%)	8562 (~12%)	30 (~20%)	6 (~9%)	161.2
Entire system	66882 (~83.8%)	41559 (~60%)	30 (~20%)	6 (~9%)	100