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.

• 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	
...

• 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.

• 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	
...

• Image type : JAI distorted images
• Image resolution : default 2456x2058pixels¹⁾
• 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

• 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
...

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

• 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.