AppendixA

Example gcp file content.

This is a .mat file with a vector of gcp structure having the following fields, illustrated by the example below.

gcp(3) = 
num: 3
name: 'pier3'
   x: 120.4070
   y: 516.6788
   z: 7.4230

gcp’s are referred to by their numbers. This file must be created from a current survey, usually using an m-file specific to the purpose. Users must know where each gcp will show up (or not) in an image frame.