I received a new Trimble TX8 scanner last week. Prior to that, we used a Trimble GX scanner. The GX had a "survey" workflow, and used a separate program called pointscape (which only runs on XP) to collect the data in the field. It was very easy to put in coordinates of a known point, along with coordinates of target points. Once that was done, the data was brought in to RealWorks already georeferenced.
The TX8 does not work that way. It is actually quite simple to use in the field (much more so than the GX). We did a test scan Friday of a bridge nearby. Four setups, two of which are known points (i.e. surveyed, with accurate N, E, and elev). We set out some spherical targets, and also put spheres on the two known points when not scanning from them.
So I bring the data into realworks (9.1). The auto-registration worked very well, although it didn't find all of the targets in each scan, maybe due to distance. But it was fairly easy to manually locate the targets that were not found, and it then it used them. What I wind up with at this point is a point cloud with four setups, and everything is registered, but in a local coordinate system.
I am having a real hard time figuring out how to transform the point cloud to a known system. I can see how to put in coordinates for targets, or for points (i.e. a point from the point cloud), but nowhere can I see a place to put in coordinates for the scan station itself. This is a simple operation, just transforming the point cloud from the local system to state plane, but there is no readily apparent way to do it. Help files are no help at all.
Am I missing some obvious step? This seems like it should be fundamental. I was told a few months ago by a trainer that nobody does that (i.e. setup on known points, with another known point to orient to). He said everyone does resection from targets.
John Hamilton, post: 334354, member: 640 wrote: I was told a few months ago by a trainer that nobody does that (i.e. setup on known points, with another known point to orient to).
"Nobody does that" often means "I don't know how to do that."
Jim Frame, post: 334357, member: 10 wrote: "Nobody does that" often means "I don't know how to do that."
I've found that out more than a few times with Trimble products that are not core surveying products like GPS, Robots, Levels, etc...
kinda what I figured...
sorta/kinda figured it out. But it is nowhere near as easy as it should be.
John Hamilton, post: 334354, member: 640 wrote: I received a new Trimble TX8 scanner last week. Prior to that, we used a Trimble GX scanner. The GX had a "survey" workflow, and used a separate program called pointscape (which only runs on XP) to collect the data in the field. It was very easy to put in coordinates of a known point, along with coordinates of target points. Once that was done, the data was brought in to RealWorks already georeferenced.
I believe that you go to File, Open, change file type to "Survey network ASCII file" and import a CSV or TXT file of your target points.
Then when you run the registrations, use the ASCII file as the reference station.Lee
John
watch this video sample
http://servicios.geocom.cl/descargas/recursos/Escaner_Laser/Geocom/POSICION%20Y%20CALAJE.mp4
user: recursos
password: recursos
The error of 4 cm is not set because the instrumental height
PS: my English is not very good
I hope it helps you
REMAIN ALERT TO ANY QUESTIONS
GREETINGS FROM CHILE
SebastiÌÁn PÌ©rez, post: 334446, member: 10418 wrote: John
watch this video sample
http://servicios.geocom.cl/descargas/recursos/Escaner_Laser/Geocom/POSICION Y CALAJE.mp4
user: recursos
password: recursosThe error of 4 cm is not set because the instrumental height
PS: my English is not very good
I hope it helps you
REMAIN ALERT TO ANY QUESTIONS
GREETINGS FROM CHILE
Gracias, Sebastian. Ahora entiendo ese m̩todo.
Poco a poco estamos descubriendo los mÌ©todos para poner los coordenados conocidos en RW. Debe de ser mas obvio, por ejemplo porque no hay un botÌ?n para importar un serie de puntos ya ajustados? Tienes que hacerlo en Open..., y seleccionar .txt, no muy obvio. Otra cosa con el TX8. Medimos el HI a la marca abajo, y pensÌ© que RW podrÌ?a corregirlo, sabiendo RW que es un TX8. Luego descubrÌ? que RW lo toma como que fue medido a la marca de arriba (true vertical), y no hay ninguna opciÌ?n (que yo veo) para decir cual marca usÌÁbamos, entonces hay que convertirlo manualmente.
Estoy impresionado con la potencia de RW para registracion automÌÁtico, pero pienso que falta algunas cosas bÌÁsicas. No todos los usuarios van a usar el mÌ©todo de resection, nosotros somos topografos y siempre construimos un red de control con puntos con coordenados ajustados.
Ojala que podemos ayudar a ustedes alg̼n dÌ?a si hay algo que les confusa. Mi tÌ©cnico tiene muchos anos de experiencia con el GX, y muchas de esas cosas eran hechos en Pointscape, entonces es como que estamos usando nuevo software, tratando de aprender el workflow del TX8. Y el documentaciÌ?n no es muy bueno, en mi opiniÌ?n.
Me imagino que estan en Santiago? Yo trato de ir por vacaciones cada ano o dos anos a Chile, vivÌ? allÌ? tres veces por un total de 3 anos, tengo muchos amigos alli y muy buenos recuerdos. Este ano fui en Febrero, fui la primera vez en mucho tiempo que fui en el verano de allÌ?, ojala que puedo ir en enero o febrero, quiero mostrar a mi hija las universidades alli para que ella va un semestre, esta en la escuela de leyes aquÌ? ahora.
klsnbms, post: 334427, member: 146 wrote:
Lee: Yes, we finally found that. I was naively looking for "import" rather than "open". One strange thing about that. You can check the box something about the "ascii wizard", and then you can define the format. But, after we did that once it was grayed out.
John
Concuerdo contigo en que le falta madurar al software. No obstante tiene muchas herramientas avanzadas para procesar nube de puntos.
Es un software bastante versÌÁtil, que sirve para aplicaciones topogrÌÁficas (curvas de nivel, secciones, superficies avanzadas, etc), aplicaciones mecÌÁnicas (chequeo de medidas, ejes, etc.), aplicaciones industriales (modelamiento 3D), aplicaciones en t̼nel (chequeo de sub y sobre- excavaciÌ?n), aplicaciones en arquitectura, etc.
En esta pagina he subido algunos videos tutoriales de TX8 y TRW
https://www.youtube.com/user/geocomchile/videos
Si necesitas vÌ?deo de algo en especifico, avÌ?same y lo subo a esa pagina.
En este link se muestran algunos trabajos que hemos realizado en chile con tx8 y trw aplicado a distintas ÌÁreas
http://www.geocom.cl/assets/Soluciones-geoespaciales-Trimble-TX8_v1.1.pdf
Si tienes tiempo en tu visita a Chile, visitanos en nuestra empresa Geocom.
Saludos
Estamos en contacto.
SebastiÌÁn PÌ©rez
www.geocom.cl
so now version 10.0 is out. I haven't looked at it myself, but my scanner guy says it makes the survey workflow MUCH easier now.
Thanks, Trimble.
We set up on known points on every project using a Leica ScanStation C10. We usually set up on assumed coordinates then transform in the office after processing of the GNSS and total station data in either TBC or StarNet. The setup routine on the C10 allows for setting up over a point and backsighting another point just like a total station.
The way it's done is Cyclone is you import your control into a scanworld then you use it in a new registration.
We have looked at the Faro X330 which only allows for acquiring targets, there is no traverse routine as in the C10. It has an autonomous GPS receiver in it to allow for quicker cloud-to-cloud registration.
You can cut and paste conversations in a language you don't know here (google translate) and it will translate it to a language you want. (if anyone is interested).
