【摘要】：針對(duì)晃動(dòng)平臺(tái)對(duì)空拍攝大視場(chǎng)攝像機(jī)難以標(biāo)定的情況,提出了利用無(wú)人機(jī)(UAV)作為動(dòng)態(tài)控制點(diǎn)來(lái)現(xiàn)場(chǎng)標(biāo)定攝像機(jī)參數(shù)的方法。該方法控制無(wú)人機(jī)在攝像機(jī)視場(chǎng)內(nèi)飛行,并用與晃動(dòng)平臺(tái)固聯(lián)的無(wú)人機(jī)定位測(cè)量系統(tǒng)對(duì)無(wú)人機(jī)位置進(jìn)行測(cè)量,從而整個(gè)飛行過(guò)程中的無(wú)人機(jī)位置均可當(dāng)作控制點(diǎn)對(duì)攝像機(jī)進(jìn)行標(biāo)定。實(shí)驗(yàn)中控制點(diǎn)數(shù)目充足,易滿足控制點(diǎn)在空間和在圖像上均勻散布的要求,可以準(zhǔn)確求解攝像機(jī)內(nèi)外參數(shù)。突破了無(wú)法在視場(chǎng)中布設(shè)傳統(tǒng)像機(jī)標(biāo)定方法所需控制點(diǎn),使晃動(dòng)平臺(tái)上大視場(chǎng)攝像測(cè)量無(wú)法現(xiàn)場(chǎng)采集參考圖像進(jìn)行高精度標(biāo)定的局限。對(duì)實(shí)驗(yàn)條件要求低,最少只需要晃動(dòng)平臺(tái)基準(zhǔn)坐標(biāo)系下2個(gè)基準(zhǔn)點(diǎn)和方位像機(jī)光心位置即可標(biāo)定攝像機(jī)內(nèi)外參數(shù)。該方法已成功應(yīng)用于系泊狀態(tài)下船舶中攝像機(jī)參數(shù)的標(biāo)定。
[Abstract]:In view of the fact that it is difficult to calibrate the camera with large field of view photographed in the opposite air of the sloshing platform, a method of calibrating the camera parameters in the field by using UAV (UAV) as the dynamic control point is proposed. This method controls the UAV to fly in the camera field of view, and uses the UAV positioning and measuring system connected with the sloshing platform to measure the position of the UAV, so that the position of the UAV can be calibrated as a control point in the whole flight process. In the experiment, the number of control points is sufficient, which can easily meet the requirements of uniform dispersion of control points in space and on the image, and can accurately solve the internal and external parameters of the camera. It breaks through the limitation that the control points needed by the traditional camera calibration method can not be set up in the field of view, so that the large field of view camera measurement on the sloshing platform can not collect the reference image on the spot for high precision calibration. The requirements for the experimental conditions are low, and the internal and external parameters of the camera can be calibrated by at least two reference points and the optical center position of the azimuth camera under the reference coordinate system of the sloshing platform. This method has been successfully applied to the calibration of camera parameters in ships under mooring.
【作者單位】： 國(guó)防科學(xué)技術(shù)大學(xué)航天科學(xué)與工程學(xué)院;圖像測(cè)量與視覺(jué)導(dǎo)航湖南省重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金(11332012)
【分類號(hào)】：TN948.41

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