Visual sensors are instrumental in surveying and land use applications, plant counting and volume measurement, surveillance, photogrammetry, 3D reconstruction and emergency response.
There are many variables to consider when choosing the appropriate visual sensor. Consider how the outputs will be used, the level of accuracy needed and anticipated flight conditions.
Ground Sampling Distance (GSD or Ground Resolution), the distance between pixel centers measured on the ground, is one of the most important measures in determining whether a visual sensor meets your needs. Greater accuracy requirements call for smaller GSD.
Take external factors into consideration such as temperature and natural light. Each sensor has an ISO Range to optimize for specific lighting conditions. Also, the sensor’s field of view will give you a sense of the observable area that can be seen through the device.
