Abstract: In view of characteristics of epipolar imagery from push-broom scanner sensors, an epipolar imagery generation method based on the parallel relationship is studied. Raw imagery is firstly divided into several blocks, then the rational function model and the projection track method are adopted to calculate the approximate epipolar lines. By analyzing the slope and fitting error of epipolar lines, raw imagery can be rotated a certain angle to generate epipolar imagery. Finally, the feasibility of this method can be examined by vertical parallax. The experimental results show that although the rotation method is not of general applicability, it is certainly feasible for WorldView-2's 4 band multispectral and pan imagery.

Key words: linear push-broom imagery, projection track method, rational function method, parallel features, vertical parallax