Generating Virtual Images from Oblique Frames
Generating Virtual Images from Oblique Frames
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DOI：
10.3390/rs5041875
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发表时间：
2013-04
期刊：
影响因子：
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通讯作者：
A. Tommaselli;M. Galo;M. V. A. Moraes;J. Marcato;C. R. Caldeira;R. Lopes
中科院分区：
文献类型：
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作者：
A. Tommaselli;M. Galo;M. V. A. Moraes;J. Marcato;C. R. Caldeira;R. Lopes
与单帧相机相比，基于数码相机多头排列的图像采集系统是具有吸引力的替代方案，可实现更大的成像区域。这类系统的标定可以分几个步骤进行，也可以同时使用具有相对定向稳定性约束的束平差进行。本文将详细介绍该方法的系统校准、图像校正、配准和融合步骤。实验采用两台富士FinePix S3Pro相机拍摄的地面和空中图像。实验重点评估了在有和没有相对方向约束的情况下自标定束平差的结果，以及对生成虚拟图像时的配准和融合的影响。实验结果表明，该方法可以对图像进行精确的校正和配准，残差小于1个像素。
Image acquisition systems based on multi-head arrangement of digital cameras are attractive alternatives enabling a larger imaging area when compared to a single frame camera. The calibration of this kind of system can be performed in several steps or by using simultaneous bundle adjustment with relative orientation stability constraints. The paper will address the details of the steps of the proposed approach for system calibration, image rectification, registration and fusion. Experiments with terrestrial and aerial images acquired with two Fuji FinePix S3Pro cameras were performed. The experiments focused on the assessment of the results of self-calibrating bundle adjustment with and without relative orientation constraints and the effects to the registration and fusion when generating virtual images. The experiments have shown that the images can be accurately rectified and registered with the proposed approach, achieving residuals smaller than one pixel.