Research And Application Of Measurable Regional Stereo Model Based On Aerial Imagery Set

Photogrammetry has developed for hundreds of years, which has gone through three periods as analogue photogrammetry, analytical photogrammetry and digital photogrammetry. But, the "stereo model" has been an important pillar of photogrammetry. In the period of simulation and analytical photogrammetry, "stereo model" is based on the original film. Into the period of digital photogrammetry, the concept of "digital epipolar image pairs" gives a lot of new features to it, and it also brings a new opportunity for development. But so far, facing this new change, "stereo model" in this stage is mainly a simulation to traditional one, the relevant theoretical and applied research is lagging behind.After analyse the new features of"stereo model"in digital photogrammetry and the new development of electronic information technology nowadays, the concept of "digital epipolar image pairs" is extended in this paper. By constructing a regional stereo model with original aerial imagery set(needless for DEM / DSM data), a wide range of continuous stereo observation was achieved. This regional stereo model break through the traditional model can only be limited to a single stereo pair. In order to evaluate its performance, stereo visual effects and coordinates calculate precision is used to test it. In order to broaden its application range, a series of interpretation techniques are researched based on it, which Including measurement of three-dimensional point coordinates, distance, terrain slope, regional area, regular and irregular spatial object volume; automatic extraction of profile; stereo label of various styles of point, line, surface, text notes and other three-dimensional symbols, and so on. At the same time, these stereo interpretation techniques are also applicable to traditional individual stereo model.