Teledyne-Optech Lynx
This page describes the original Teledyne-Optech mobile mapping resources for Orbit import.
Use the corresponding Orbit Import Template to import the described original data.
It is recommend to read first Orbit Mapping Resource.
Trajectory
Trajectory positions file
File format : One ascii *.asc file.
File structure Rows : Each timestamp is one record.
File structure Columns : Tab separated (char 9), headers, with exact order as the example below.
Value “TIME” : GPS Week time, seconds from last Sunday 00:00:00, decimal notation.
Value “EASTING/Long, NORTHING/Lat”: any
supported coordinate system can be used, Long/Lat order for geographical coordinates. But all mobile mapping resources must have the same CRS.
Value “HEIGHT” : Height above ellipsoid, decimal notation.
TIME EASTING/Long NORTHING/Lat HEIGHT ROLL PITCH HEADING RMS_EASTING RMS_NORTHING RMS_HEIGHT RMS_ROLL RMS_PITCH RMS_HEADING
153227.0574842 2629421.5410 431312.6726 636.5117 0.115725 1.437804 88.554746 0.0149 0.0152 0.0252 0.007870 0.008092 0.037160
153227.0624843 2629421.5410 431312.6726 636.5117 0.115501 1.438038 88.554540 0.0149 0.0152 0.0252 0.007868 0.008091 0.037160
153227.0674844 2629421.5410 431312.6726 636.5117 0.115063 1.438271 88.554553 0.0149 0.0152 0.0252 0.007867 0.008089 0.037159
...
Panoramas
Image files
Image type : Ladybug 3 or Ladybug 5, equirectangular panoramas.
Image resolution : Ratio 2×1, 8000×4000 advised for Ladybug 5, 5400×2700 for Ladybug 3.
File format : Each image is one *.jpg file.
File name : Exactly as “Image Filename” value of image position file, see below.
Folder structure : All files in one folder.
Image positions file
File format : one ascii *.txt file
File structure Rows: each image is one record
File structure Columns : Tab separated (char9), headers, with exact order as the example below.
Value “GPS Time” : Same time reference as trajectory, see above.
Value “Image Filename” : File name as on disk, with file extension.
Value “East/Long”, “North/Lat”, “Height” : Same CRS as trajectory, see above.
GPS Time Image Filename East/Long North/Lat Height Omega Phi Kappa
316241.769414 IMG3496.jpg 56757.7839 61799.6562 78.9386 -1.187031 1.429430 107.837888
316242.102415 IMG3506.jpg 56757.7841 61799.6561 78.9385 -1.181243 1.437398 107.837367
316242.435416 IMG3512.jpg 56757.7840 61799.6562 78.9383 -1.185742 1.433885 107.837888
...
Planars
Image files
Image type : JAI distorted images
Image resolution : default 2456x2058pixels
1) File format: each image is one *.jpg file
File name : exactly as “Filename” value of photo position file, see below
Folder structure : all files of each camera in a separated folder
Image positions file
File format : one ascii *.txt file for each camera
File structure Rows: each image is one record
File structure Columns : tab separated (char9), headers, with exact order as the example below
Value “GPSTime” : same time reference as trajectory, see above
Value “Filename” : file name as on disk, with file extension
Value “East/Long”, “North/Lat”, “Altitude” : same CRS as trajectory, see above
ImNum Cam CamImNm Rotate Error GPSTime Index Filename East/Long North/Lat Altitude Roll Pitch Heading Width Height Var01 Var02
8 2 2 0 0 246142.1482 0 survey1_Cam2_000002.jpg 618920.6304 4849398.125 161.9675 91.575748 78.038017 -0.870793 2456 2058 0 0
12 2 3 0 0 246143.1493 0 survey1_Cam2_000003.jpg 618924.9649 4849399.46 161.8989 91.972346 78.764565 -0.726168 2456 2058 0 0
16 2 4 0 0 246144.1503 0 survey1_Cam2_000004.jpg 618929.9744 4849401.075 161.8402 94.27533 79.694489 -2.553655 2456 2058 0 0
...
Camera calibration
For each camera it is required to adjust the template camera calibration AttributeExpression values in the camera import Orbit Resource Description file.
Edit the template files prior to data import using a standard text editor (e.g. Notepad). Be meticulous regarding file structure and formatting.
<template_name>/planar<X>/import/import_locations.ord
[CameraNo1]
PIXEL_SIZE =3.450000
IMAGE_HEIGHT =2058.000000
IMAGE_WIDTH =2456.000000
Focal_Length =8.260648
Radial_Distortion_K1 =0.001692
Radial_Distortion_K2 =-0.000030
Radial_Distortion_K3 =0.000000
Principal_Point_Offsetx =1228.871105
Principal_Point_Offsety =1027.912449
LiDAR
Point cloud files
File format : One or more *.las or *.laz files.
File structure : Las version 1.2.
Value of Latitude, Longitude, Elevation : Same reference as Trajectory.
Value of Timestamp : Same reference as Trajectory.ctory.