基于激光掃描的魚(yú)眼相機(jī)三維標(biāo)定方法
[Abstract]:Due to the large distortion in the imaging of the fish-eye camera, it is difficult to obtain accurate and reliable corner points in the edge region of the image by using the two-dimensional calibration plate method, which leads to the decrease of the calibration accuracy, while the construction of the calibration field is complicated in the traditional three-dimensional calibration method. Finite number of feature points and so on. Therefore, a three-dimensional calibration method for fish-eye camera based on laser scanning is proposed. Firstly, the 3D point cloud image of the indoor calibration space is obtained by laser scanner, and then the matching relation between the point cloud image and the corresponding point of the camera photograph is obtained by the size invariant feature transformation matching method. The consistent (RANSAC) selection of block random sampling is carried out, and then the 3D RANSAC screening is carried out according to the image coordinates and physical coordinates of the corresponding points to estimate the final internal and external parameters of the fish-eye camera. Compared with the classical Zhangzhengyou calibration method and its improved method, the proposed method can obtain more effective feature points, improve the calibration accuracy and achieve the distortion correction of the fish-eye camera. The method is simple, accurate and widely applicable.
【作者單位】: 上海大學(xué)機(jī)電工程與自動(dòng)化學(xué)院;中國(guó)科學(xué)院寧波材料技術(shù)與工程研究所;
【基金】:國(guó)家自然科學(xué)基金(61273276) 國(guó)家科技支撐計(jì)劃(2015BAF14B00) 浙江省自然科學(xué)基金(R13F020014)
【分類(lèi)號(hào)】:TP391.41
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