CAJ | 학술논문

基于最优非线性加权的光点定位方法是一种改进的重心法,但其加权系数的传统解法计算复杂、计算量大.为了寻找简单的解法,通过大量数据研究了含有不同功率噪声光斑的最优加权系数,结果表明该系数对噪声功率不敏感,可以应用到一般的光斑中去,并求出近似最优加权系数为2.15.与传统的亚像素算法相比,基于该系数的加权重心法使偏差缩小了1/3,结果令人满意.
기우최우비선성가권적광점정위방법시일충개진적중심법,단기가권계수적전통해법계산복잡、계산량대.위료심조간단적해법,통과대량수거연구료함유불동공솔조성광반적최우가권계수,결과표명해계수대조성공솔불민감,가이응용도일반적광반중거,병구출근사최우가권계수위2.15.여전통적아상소산법상비,기우해계수적가권중심법사편차축소료1/3,결과령인만의.
Optimal nonlinear weighting method for light-spot positioning is an improved barycenter algorithm.In view of its complexity and enormous calculation for calculating optimal weighting coefficient,an easy method is proposed.The optimal coefficient of different light-spot is studied with large numbers of data in this method.The result shows that the optimal coefficient is independent of the power of noise and could be applied to the positioning of ordinary light-spot.Moreover,the optimal coefficient is ascertained as 2.15.Compared with other sub-pixel algorithm,the weighting barycenter algorithm based on the optimal coefficient reduces the error by 1/3,and the result is satisfying.