Messages

1

Bug Reports / Re: "Error reading project"

« on: April 30, 2017, 10:48:23 PM »

Hello Alexey,

I am using Windows 10 64-bit and photoscan has write access to the project location. Perhaps the problem might be that the sparse cloud was created on a different machine with a more advanced version of Photoscan (v. 1.3.1). The problem occured when I tried to continue the workflow for dense cloud creation on a machine running v. 1.2.4.

2

Bug Reports / Re: "Error reading project"

« on: April 30, 2017, 07:18:06 AM »

Hello, I would like to know if a solution has been found, since I have encountered the same problem after creating a dense cloud over a period of 2 days. Currently I get a message that I "can't save project" and when I try to generate report I get an "error reading project" message.

3

General / Resetting geolocation of model

« on: April 08, 2017, 11:10:30 PM »

Hello,

We are using Photoscan to create orthographic mapping of archaeological sites, and are running into the following problem. The initial model is geolocated using the Exif GPS data of the drone photographs. However, it is necessary to measure ground control points using RTK, which we would like to use to improve the accuracy of the geolocation of the model  (without again going through the model creation stages).

Is it possible to "reset" the geolocation of the model, after the completion of the dense cloud and mesh?  It seems that inputting ground control points at these stages does not work if the Exif GPS data of the photos was used in the photo alignment stage.

Thanks!

4

Agisoft Viewer / Distance measure and/or scale bar in Viewer

« on: January 10, 2017, 10:51:52 PM »

When sharing archaeological models in the TLS format among collaborators who do not have Photoscan or 3d editing software, it is very important to show the scale of objects. A scale bar or a distance measuring tool in Agisoft Viewer would be greatly appreciated!

5

General / Re: Photoscan projects for archaeological documentation in Jerusalem

« on: January 06, 2017, 04:06:10 PM »

Can You post some technical details regarding this site with numerous tombs? I suppose these are tombs, this model with central room and attached smaller chambers. I mean size and number of photos that You used, and the machine that You are working on. I am reconsidering the possibility to transfer concept of technical documentation to 3d models created in Photoscan, but can not create small model with enough detail even for one wall. Your input appreciated. Stefan

Hi Stefan, we used approximately 4500 photographs. There was much trial and error involved in learning the correct way to photograph the different elements of the cave. The rooms were produced as seperate chunks and then joined at the doorways using 5-6 ground control points (markers). Here are the relevant specs of the machine that was used for the Sanhedrin cave (which is the biggest project we have attempted thus far):

CPU      Intel Core i7 6800K 6-Core 3.4 GHz 8MB Cache
GPU      ASUS GeForce GTX 1070 8GB GDDR5
RAM      64 GB

Relevant Photoscan settings: medium accuracy alignment, pair preselection disabled, 40000/4000 key/tie point limit, medium quality mesh from dense cloud, texture size 8192.

I have checked now this video חורבת עדסה - בית בד מהתקופה הממלוכית
Obviously You are getting very high level of detail for the architecture and features within the trench, but what about profiles? Is it possible to get them also with enough detail in order to use this model as reference archaeological documentation instead of drawings? Thanks.

I believe the profiles are accurate and are well-suited for archaeological documentation. They are definitely superior to what we are currently using (hand-drawing based on points plotted with a Total Station). We are trying to streamline the process of producing archaeological plans and sections. So far the easiest method seems to be using Adobe Photoshop 3d, with sections produced using the cross-section tool. For the purpose of Photoshop I use the DAE COLLADA format. In the case of very large project mesh decimation is necessary.

6

General / Photoscan projects for archaeological documentation in Jerusalem

« on: December 24, 2016, 11:48:10 AM »

Hi everybody, I'd like to share some recent projects that we have been working on using Photoscan for the documentation of archaeological monuments and salvage excavations in the Jerusalem region for the Israel Antiquities Authority:

https://www.youtube.com/playlist?list=PLvreL_nsTugfLKVFV29GFwYfLhM6D6cXZ

I'd appreciate any comments, suggestions and criticism.

Thank you for your excellent software!

Alexander Wiegmann

7

General / Re: Georeferencing model by markers

« on: September 24, 2016, 10:29:39 PM »

Thank you very much!

8

General / Georeferencing model by markers

« on: September 24, 2016, 05:48:24 PM »

Hello, I've created a model of a building which I would like to export for Google Earth (.kmz). My camera locations aren't georeferenced, but I have the coordinates and elevation of three points on the model (the corners of the building). The building is scaled correctly. Is it possible to georeference the model by placing three markers with the coordinates? I've placed the markers and have entered the coordinates into the reference panel but am still unable to export a .kmz file.

Thank you in advance!