Topics

1

General / Nice results using a ring flash!

« on: August 23, 2016, 10:01:44 PM »

Hi all!
I just wanted to share a tip that might come in useful to some of you. I've been working a lot with close range photogrammetry in low light situations, and have grown tired of rigging lights and hauling that tripod around. I even used handheld lights to paint light into the shadows during long exposures - which worked nicely as long as the fundament was sturdy enough to cope with the movement. I bought a Godox AR400 ring flash. It has a built in battery and quite powerful led light for focusing. It enables me to shoot at iso100, f8, 1/200th sec, with my 20mm fx setup, and still get fairly decent exposures at 20 feet distance. The result I get with this setup is by far good enough for my use, - it also makes the shooting process very quick compared to using a tripod. You can find some examples of using the ringflash in my sketchfab gallery: https://sketchfab.com/gunnar/models

2

General / Agisoft Lens -> Adobe Lens Profile

« on: October 05, 2015, 03:35:28 PM »

I'm wondering if it's possible to use the "Agisoft Lens" output to make good distortion correction profiles in "Adobe Lens Profile", and how to, if possible?

3

Feature Requests / Icons suitable for higher screen resolution.

« on: June 19, 2014, 02:45:22 PM »

I recently got a 4k screen which is giving me some problems in several applications - especially photoshop where i would have to use a magnifying glass to be able to read menus and see icons. The screen resolution is 3840X2160. I've tried to scale text and icons by 200% in the screen options in Win 7. This works in most programs - also in PS, except for the icons... Would it be possible to implement alternative sizes or something like that. I've added a screenshot to point out the areas that i find problematic.

4

General / Any Norwegians here?

« on: May 03, 2014, 11:27:26 AM »

Hi everybody.
I'm using Photoscan as a way of documenting maritime cultural heritage, and I'm located in northern Norway. I want to get in touch with other photoscan users in Norway to form a community. I'm planning to arrange seminars, workshops and such - and it would be nice to know if there are any guest-speakers available around. Also it would be nice just to know if there are any norwegians out there to discuss with, and exchange experiences with.

I have made a facebook group, and I really hope to get in touch with others in my region. Either there or here:
https://www.facebook.com/groups/fotogrammetri/

I consider myself a newbie, but i have a blog that I update now and then:
http://baatnerden.blogspot.no/

I also have some models on sketchfab:
https://sketchfab.com/gunnar

Looking forward to get in touch with more people around here.

5

General / Software for reverse engineering?

« on: October 31, 2013, 02:08:08 AM »

Photoscan has given our restoration-wharf a great tool too document vessels in 3D. The next step for us now, is to find good software for turning these meshes into nurbs/cad. I'm not really sure about the terminology here, but i guess the goal is to turn the mesh into some sort of mathematical shapes. I have played around a little in Rhinoceros, but we havent decided on buying it yet. I like the fact that Rhino seems to be able to handle a whole lot of different formats - but I have no clue of what other options we have. Autocad seems to be out of reach because of the price.

Our goal, I guess, is to be able to make 2d/3d-drawings from objects. There was a plug-in for Rhino that could slice the mesh-model into sections, but these "cuts" were made from lines of cuts through faces in the mesh. If they in some magical way had turned into nurbs that would have been great. Also, if there was some rhino-plugin that would let me draw chines directly on the mesh that would also been great. Rhino also has some plugins for computing hydrostatic data from ship hulls, and we have used Delftship for this task so far, but it doesn't seem to work well with mesh-files.

I dont know what the difference between Rhino and cad-software is - is there any?

I hope someone can help us with some pointers on what would be the best investment for us. What fairly priced options do we have?