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Table 1 Behaviors of photogrammetric modeling

From: Photogrammetric error sources and impacts on modeling and surveying in construction engineering applications

Factor Behavior
Distance Farther distance, lower accuracy (40 m: 6 ~ 10 cm)
Number of overlapping photos The larger number of overlapping photos, the better accuracy
Intersection angle The closer to 90°, the better accuracy
Angle of incidence The closer to 0°, the better quality of images, so the better accuracy
Camera model Higher end, higher accuracy
Resolution Strong correlation with accuracy (raise by 1.6% per 1 MB increase)
Features (texture) More features, higher accuracy; higher accuracy by colorful texture than grey/plain texture
Focal length Longer focal length, higher accuracy; set to obtain optimum coverage
Camera lens Less distortion, higher accuracy