一种鱼眼镜头畸变校正算法的FPGA实现

FPGA implementation of a fisheye lens distortion correction algorithm

鱼眼镜头具有较大视场优势的同时,也会引入大量畸变.现有校正方法基本上都是采用PC为实现平台,虽然能取得很好的校正效果,但是实时性很差.在实时性要求稍高的场合,就很难满足实际需求.鉴于问题本身的比较复杂,算法的时间复杂度较高,单纯寻求简单的算法不太可行.本文依据球面模型校正技术,基于FPGA架构来实现鱼眼镜头的畸变校正,大大降低了校正所花费的时间,提高了校正的实时性,并取得了较好的校正效果.

Fisheye lenses are often used to enlarge the field of view of a camera.But the image taken by the fisheye lenses often have severe distortion.Although the current algorithms can achieve relatively good results,but most are running on the PC.In view of the complexity of the problem itself,in real-time demanding occasions,it is difficult to meet the actual demand.We employ FPGA technology to implement the fisheye lenses distortion correction algorthms,and have achieved relatively satisfactory correction results.