计算机工程与应用
計算機工程與應用
계산궤공정여응용
COMPUTER ENGINEERING AND APPLICATIONS
2015年
15期
188-192
,共5页
鱼眼镜头%标定%椭圆拟合%特征点排序
魚眼鏡頭%標定%橢圓擬閤%特徵點排序
어안경두%표정%타원의합%특정점배서
fisheye camera%calibration%ellipse fitting%feature points ranking
针对鱼眼镜头的标定问题,结合其成像宽视野范围需求和高畸变特性,设计实现了适用于鱼眼标定的宽幅多特征圆标定板;基于该种标定板,给出了基于椭圆检测和参数拟合的特征点高精度检测和可靠性排序算法。实验结果表明,利用所述方法,不但能够实现标定板成像的全视野覆盖,而且能够在很大程度上提高特征点的检测精度,保证特征检测过程的可靠性和鲁棒性,同时能够提高较为宽泛的图像采集角度范围。
針對魚眼鏡頭的標定問題,結閤其成像寬視野範圍需求和高畸變特性,設計實現瞭適用于魚眼標定的寬幅多特徵圓標定闆;基于該種標定闆,給齣瞭基于橢圓檢測和參數擬閤的特徵點高精度檢測和可靠性排序算法。實驗結果錶明,利用所述方法,不但能夠實現標定闆成像的全視野覆蓋,而且能夠在很大程度上提高特徵點的檢測精度,保證特徵檢測過程的可靠性和魯棒性,同時能夠提高較為寬汎的圖像採集角度範圍。
침대어안경두적표정문제,결합기성상관시야범위수구화고기변특성,설계실현료괄용우어안표정적관폭다특정원표정판;기우해충표정판,급출료기우타원검측화삼수의합적특정점고정도검측화가고성배서산법。실험결과표명,이용소술방법,불단능구실현표정판성상적전시야복개,이차능구재흔대정도상제고특정점적검측정도,보증특정검측과정적가고성화로봉성,동시능구제고교위관범적도상채집각도범위。
Towards to the calibration problem of fisheye camera, a kind of calibration board is designed according to the camera’s wide visual field and high distortion. Then, high-precision algorithms for feature points extraction and ranking are proposed and implemented based on this kind of board. Experiments results show that the designment and algorithms proposed in this paper can not only guarantee the board’s full-visual-field imaging, but also can improve the feature’s detec-tion precision, enhance its reliability and robustness, and provide wider angular range for image acquisition.