The wide range of applications has resulted in a wide variety of AVI platforms and collection techniques being used, with little standardization. The flexibility of AVI has resulted in the independent development of numerous survey techniques. A single standard for AVI collection was not appropriate because of the wide range of survey objectives. Table 7 provides a summary of user-controllable factors that control the overall quality of the AVI survey results. The table lists the various factors that influence the quality of imagery and associated interpretive value of the flight data.
Users can evaluate various trade-offs between quality and cost in terms of their survey objectives.
The recommended standards are based on the actual quality of the imagery and associated data rather than the intended quality. This standard essentially addresses the composite affect of camera, recorder, aircraft speed and stability that affect image quality. Positioning Positioning is a critical component of AVI surveys in that there are often few distinct landscape features that can be used to reference the imagery. Many surveys have no or rudimentary flightline positioning, making the imagery difficult to locate for all but the original, inflight personnel. There is no standard of documentation for aerial video surveys.