A Hardware Architecture Design for Projector Geometric Distortion Correction

A hardware architecture is proposed to correct the projector geometric distortion for projective mobile devices. A double-line buffer is designed based on odd-even storage mechanism to realize parallel access of off-chip pixels. A redundancy elimination unit is designed based on data reuse to effectively avoid repetitive access of off-chip pixels, and the access is reduced by average 61.5%. The occupied storage size is only 11.9 kB. Furthermore, the division-free midpoint algorithm is adopted, combined with coordinates LUT, to realize low complexity off-chip and buffer addressing.