콘텐츠 본문
논문 국내 국내전문학술지(KCI급) An Efficient Hardware Architecture of Coordinate Transformation for Panorama Unrolling of Catadioptric Omnidirectional Images
- 학술지 구분 국내전문학술지(KCI급)
- 게재년월 2011-03
- 저자명 이승호
- 학술지명 Journal of Institute of Korean Electrical and Electronics Engineers
- 발행처명 Journal of Institute of Korean Electrical and Electronics Engineers
- 발행국가 국내
- 논문언어 외국어
- 전체저자수 2
- 연구분야 공학 > 전자/정보통신공학
논문 초록 (Abstract)
In this paper, we present an efficient hardware architecture of unrolling image mapper of catadioptric omnidirectional imaging systems. The catadioptric omnidirectional imaging systems generate images of 360 degrees of view and need to be transformed into panorama images in rectangular coordinate. In most application, it has to perform the panorama unrolling in real-time and at low-cost, especially for high-resolution images. The proposed hardware architecture adopts a software/hardware cooperative structure and employs several optimization schemes using look-up-table(LUT) of coordinate conversion. To avoid the on-line division operation caused by the coordinate transformation algorithm, the proposed architecture has the LUT which has pre-computed division factors. And then, the amount of memory used by the LUT is reduced to 1/4 by using symmetrical characteristic compared with the conventional architecture. Experimental results show that the proposed hardware architecture achieves an effective real-time performance and lower implementation cost, and it can be applied to other kinds of catadioptric omnidirectional imaging systems.
