According to the number of camera lenses,tilt photogrammetry can be mainly divided into five-lens cameras,dual-lens cameras and single-lens cameras,etc.In urban real scene 3D modeling,the model accuracy of single-lens UAV is generally low due to the limited field image acquisition perspective,while the five-lens UAV is generally not suitable for small-range scene modeling due to excessive load and high measurement cost.Dual-lens UAV is applied to urban fine reality modeling,and comprehensive comparison is made with five and single lens from multiple angles.The research results show that dual-lens oblique profile measurement takes the advantages of model quality and cost into account,and has a good application prospect in urban reality modeling.
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