【摘要】：利用擴(kuò)展共線方程實(shí)現(xiàn)組合相機(jī)單片影像的空中三角測(cè)量,通過(guò)該方法來(lái)提高全景影像的定位精度。由于組合全景相機(jī)中各子相機(jī)剛性固定,相機(jī)間的相對(duì)位姿參數(shù)可以精確標(biāo)定,因此利用擴(kuò)展共線方程模型,可以將組合全景相機(jī)的構(gòu)像單元從單個(gè)子相機(jī)影像擴(kuò)展為整個(gè)組合相機(jī)獲取的多張影像。與已有的球模型方法,包括球理想模型和球嚴(yán)密模型方法相比,本文所用的擴(kuò)展共線方程方法使用各子相機(jī)影像像點(diǎn)作為觀測(cè)值,避免了球模型方法中由各子相機(jī)攝影中心不重合導(dǎo)致的球模型投影誤差和攝站內(nèi)重疊區(qū)域融合誤差。試驗(yàn)結(jié)果表明:與球模型方法相比,本文方法無(wú)需模型投影和攝站內(nèi)重疊區(qū)域融合等繁瑣的處理過(guò)程,避免了由其引起的精度損失,保證了空三網(wǎng)穩(wěn)定性的同時(shí)提高了定位精度。
[Abstract]:The aerial triangulation of the single-piece image of the combined camera is realized by using the extended co-linear equation, and the positioning accuracy of the panoramic image is improved by the method. Due to the rigid fixation of each sub-camera in the combined panoramic camera, relative pose parameters between the cameras can be accurately calibrated, and therefore, the image-forming unit of the combined panoramic camera can be extended from a single sub-camera image to a multi-image acquired by the whole combined camera by using an extended co-linear equation model. Compared with the existing ball model method, the method comprises the following steps of: using the image image points of each sub-camera as an observation value, And the spherical model projection error caused by the non-coincidence of the sub-camera shooting centers in the ball model method and the fusion error of the overlapping area in the shooting station are avoided. The experimental results show that, compared with the method of the ball model, the method of this paper does not need a complicated process such as the fusion of the model projection and the overlapping area in the camera station, so that the accuracy loss caused by the method is avoided, and the stability of the air-to-three network is ensured, and the positioning accuracy is improved.
【作者單位】： 武漢大學(xué)測(cè)繪學(xué)院;
【基金】：測(cè)繪地理信息公益性行業(yè)科研專項(xiàng)~~
【分類號(hào)】：P23;P207.2

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