CAJ | 학술논문

针对线阵相机的特点，论文提出了一种线阵相机标定方法。首先，利用设计的平面靶标与相机多次曝光巧妙地构建了虚拟立体标定靶标，通过分析与数学建模得到靶标上标定特征点空间位置与像点的对应关系；其次，分别使用最小二乘法与迭代求解的方法对多个特征点的线性参数超定方程与镜头的非线性畸变参数进行求解，讨论了标定过程中相机与靶标非严格平行时对标定结果的影响；最后，实验室条件下使用论文设计的靶标与方法对线阵相机标定进行实验验证。理论分析与实验结果表明此线阵相机标定方法简单灵活，标定特征点个数不拘泥于靶标的制作，相机与靶标的位置无需严格平行，标定精度高，且具有较好良好的实用工程应用价值。
침대선진상궤적특점，논문제출료일충선진상궤표정방법。수선，이용설계적평면파표여상궤다차폭광교묘지구건료허의입체표정파표，통과분석여수학건모득도파표상표정특정점공간위치여상점적대응관계；기차，분별사용최소이승법여질대구해적방법대다개특정점적선성삼수초정방정여경두적비선성기변삼수진행구해，토론료표정과정중상궤여파표비엄격평행시대표정결과적영향；최후，실험실조건하사용논문설계적파표여방법대선진상궤표정진행실험험증。이론분석여실험결과표명차선진상궤표정방법간단령활，표정특정점개수불구니우파표적제작，상궤여파표적위치무수엄격평행，표정정도고，차구유교호량호적실용공정응용개치。
A novel method that can be used for improving line-scan camera calibration according to its features was proposed. Firstly, the designed planar pattern and multiple exposures of line-scan camera were used to produce a virtual stereo calibration pattern. Secondly, a mathematical model was analyzed and established to seize the relation between the coordinates of calibration points on the pattern and those of their images. Then, the technique of least mean square and iterative optimization were employed to solve both the over-determined equations for multiple feature pointsand nonlinear parameters of lens. The impact to the calibration result that was caused by the non-parallel nature between the camera and calibration pattern was also analyzed. Finally, both the analysis and experimental results reveal that this proposed calibration method is not only convenient and flexible, but the calibration points are also independent of calibration pattern and that the condition of parallelism is not required. All these features make the devised method accurate and practical.