One of Aerial Image Geometric Correction Methods Based on 3-D Projection

Visible images are always slantwise, simultaneity ground control points layout are not easy, so we must choose one method which can correct the slantwise image based on few reference points. When exterior orientation elements known, the paper can build a correction plane founded on collinearity equations, and then correct the slantwise image using gray interpolation. The corrective effect is very visible, and the speed is rapid.