Mine eyes have seen the glory

摘要

Lewis Graham looks at the workflows and tools necessary to extract products from UAV data. He recommends that we prepare two tailored, written checklists for each project that we undertake. The first should be directed at flight operations; the second should be focused on the project control, data collection and processing strategies. It is good practice to plan control and check points before arriving on-site. We must plan our mission such that we have a minimum of five images covering all areas that we plan to map. It is a good idea to blur test images, this is built into higher quality point cloud generation software. We must pay particular attention to spatial reference systems, ensuring that we do not mix ellipsoid heights with geoid heights. The output of this step will be a point cloud in LAS format and an orthomosaic as a TIFF or JPEG. The first step in downstream processing is to measure the horizontal and vertical accuracy of the point cloud. This is comparing the known locations of surveyed check points to where they appear in the processed data. The amount of ground classification we will need to perform depends on the products your customer requires. Lewis Graham looks at the workflows and tools necessary to extract products from UAV data. He recommends that we prepare two tailored, written checklists for each project that we undertake. The first should be directed at flight operations; the second should be focused on the project control, data collection and processing strategies. It is good practice to plan control and check points before arriving on-site. We must plan our mission such that we have a minimum of five images covering all areas that we plan to map. It is a good idea to blur test images, this is built into higher quality point cloud generation software. We must pay particular attention to spatial reference systems, ensuring that we do not mix ellipsoid heights with geoid heights. The output of this step will be a point cloud in LAS format and an orthomosaic as a TIFF or JPEG. The first step in downstream processing is to measure the horizontal and vertical accuracy of the point cloud. This is comparing the known locations of surveyed check points to where they appear in the processed data. The amount of ground classification we will need to perform depends on the products your customer requires.