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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2014.1
- 수록면
- 335 - 344 (10page)
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초록· 키워드
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As a kind of 2D spatial coordinate transform, image warping is a basic image processing technique utilized in various applications. Though image warping algorithm is composed of relatively simple operations such as memory accesses and computations of weighted average, real-time implementations on embedded vision systems suffer from limited computational power because the simple operations are iterated as many times as the number of pixels. This paper presents a real-time implementation of a look-up table(LUT)-based image warping using an FPGA. In order to ensure sufficient data transfer rate from memories storing mapping LUT and image data, appropriate memory devices are selected by analyzing memory access patterns in an LUT-based image warping using backward mapping. In addition, hardware structure of a parallel and pipelined architecture is proposed for fast computation of bilinear interpolation using fixed-point operations. Accuracy of the implemented hardware is verified using a synthesized test image, and an application to real-time lens distortion correction is exemplified.
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참고문헌 (16)
참고문헌 신청
A. Serguienko / 2008 / Evaluation of image warping algorithms for implementation in FPGA / 석사 / Linkopings universitet
C. Vancea / 2007 / LUT-based image rectification module implemented in FPGA / Proceedings of IEEE International Conference on Intelligent Computer Communication and Processing : 14
E. L. Oberstar / 2007 / Fixed-point representation &fractional math
J. Park / 2009 / Lens distortion correction using ideal image coordinates / IEEE Transactions on Consumer Electronics 55 (3) : 987 ~ 991
J. Weng / 1992 / Camera calibration with distortion models and accuracy evaluation / IEEE Transactions on Pattern Analysis and Machine Intelligence 14 (10) : 965 ~ 980
C. Vancea / 2007 / LUT-based image rectification module implemented in FPGA / Proceedings of IEEE International Conference on Intelligent Computer Communication and Processing : 14
E. L. Oberstar / 2007 / Fixed-point representation &fractional math
J. Park / 2009 / Lens distortion correction using ideal image coordinates / IEEE Transactions on Consumer Electronics 55 (3) : 987 ~ 991
J. Weng / 1992 / Camera calibration with distortion models and accuracy evaluation / IEEE Transactions on Pattern Analysis and Machine Intelligence 14 (10) : 965 ~ 980
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